po: update translations and regenerate POT file and PO files

The value of 'consumed' may not exceed the given 'length'.

Bug existed since version 2.9.3, commit e739448c.

(Bug was found by studying Fedora crash reports.  Thank you, Fedora!)

ChangeLog

@@ -1,3 +1,854 @@
+Changes between v5.9 and v6.0:
+------------------------------
+
+Benno Schulenberg (192):
+      bindings: allow rebinding ^Z also on a Linux console (a VT)
+      bindings: allow toggling line numbers (when enabled) also in tiny version
+      bindings: let ^T in the tiny version invoke spell checker (when included)
+      browser: with --zero, do not use the bottom row for displaying filenames
+      build: fix compilation when configured with --disable-color
+      build: fix compilation when configured with --disable-nanorc
+      build: fix compilation when configured with --enable-tiny
+      build: fix compilation with --enable-tiny --enable-nanorc
+      build: fix compilation with --enable-tiny --enable-wrapping
+      build: include the YAML syntax file among the distributed files
+      bump version numbers and add a news item for the 6.0 release
+      display: clear the status bar early enough, so that --zero can show text
+      display: do not wipe the status bar when --zero or --minibar is active
+      display: ensure feedback will be cleared also on a one-row terminal
+      display: make sure there are at least as many text lines as help lines
+      display: move some code for overwriting verbatim feedback with --zero
+      display: redraw the screen in tiny version upon resuming from suspension
+      display: with --zero, redraw the bottom row instead of wiping a message
+      docs: add a hint about making ^L do just 'refresh' to the sample nanorc
+      docs: add a meta description for the HTML rendering of the manual
+      docs: add a suggested rebind and three suggested unbinds to the sample rc
+      docs: avoid large Table of Contents at top of HTML version of manual
+      docs: clarify that --enable options do not fully counteract --enable-tiny
+      docs: correct the description of the layout -- four areas, not five
+      docs: document the effect of --quickblank together with --zero/--minibar
+      docs: explain the effect of --zero / -0 / 'set zero'
+      docs: explain what it means when --rawsequences is needed
+      docs: give more examples of things that --enable-tiny excludes
+      docs: improve the title of the manual, away from the bare "nano"
+      docs: list the new color names, from 'rosy' to 'crimson'
+      docs: mark options -z, --suspendable, and 'set suspendable' as obsolete
+      docs: mention "grey" also at the other place where color names are listed
+      docs: mention M-Z (for toggling the interface) among the Feature Toggles
+      docs: mention that --zero and 'set zero' hide also the help lines
+      docs: move the chapter about editor basics into third position
+      docs: prevent a black square in the PDF after the long synopsis line
+      docs: reshuffle a GNU marker, to make the title clearer in search engines
+      docs: reword several of the descriptions in the chapter on building nano
+      docs: reword the beginning of the chapter on nanorc files
+      docs: say thanks to the Indonesian translator
+      feedback: give a more accurate message when the help lines won't appear
+      feedback: refuse the --constantshow toggle (M-C) on a one-row terminal
+      feedback: report an unbindable function key as an "Unknown sequence"
+      feedback: report the number of inserted lines also with --zero or --mini
+      feedback: show a relevant message for M-O when the syntax has 'tabgives'
+      feedback: suppress chatty messages when --zero is active
+      feedback: to have a status bar, suppress --zero while in the help viewer
+      feedback: when reporting an unbound function key, mention its number
+      feedback: when the user types ^Z, say they can suspend nano with ^T^Z
+      feedback: with --mini or --zero, suppress number of lines for new buffer
+      feedback: with --mini/--zero, suppress message when toggling whitespace
+      feedback: with --zero, drop a message in a short while, as with --minibar
+      files: allow inserting also when started with the --noread option
+      files: clear original filename when the user toggles Append or Prepend
+      gnulib: update to its current upstream state
+      help: do not show ^S when --preserve is in effect
+      help: ensure there is a blank line between title bar and start of text
+      help: group the now lone mouse toggle with the "behavioral" ones
+      help: remove an unneeded restriction for small terminals
+      help: skip the leading blank line when the terminal is very flat
+      help: when done, always redraw the "bottom bars", also with --zero
+      history: process file faster by not filtering out hypothetical duplicates
+      input: ensure that no more bytes are consumed than are available
+      justify: correctly determine whether top-of-buffer has been reached
+      memory: avoid a tiny leak when an option with an argument is given twice
+      memory: avoid leaking the filename when dottifying it on the minibar
+      new feature: option --zero for an interface without bars
+      options: make --zero imply --nohelp, and 'set zero' imply 'set nohelp'
+      pasting: when less than a line is pasted, allow automatic hard-wrapping
+      prompt: avoid resetting the history pointer when the search is cancelled
+      prompt: begin at bottom of history list when at secondary prompt
+      prompt: keep a clear answer clear also after an excursion into history
+      rcfile: recognize fourteen new color names, mostly for subdued shades
+      rcfile: remove the deprecated 'cutwordleft' and 'cutwordright' keywords
+      replacing: keep centering the occurrence, also after toggling help lines
+      replacing: keep the spotlighted occurrence in view, also with --zero
+      replacing: keep the spotlighting, also after toggling the help lines
+      search: with --zero, do not obscure an occurrence on the bottom row
+      search: with --zero, drop a message at the same time as the spotlight
+      statusbar: count words in the way that matches how Ctrl+Right moves
+      statusbar: overwrite a message also when using --constant with --zero
+      suspension: enable ^Z by default -- ignore -z option and drop M-Z toggle
+      suspension: leave ^Z unbound by default -- just ^T^Z will suspend nano
+      syntax: debian: remove file -- Debian itself will have to handle it
+      syntax: default: colorize comments as one of the last things
+      syntax: default: colorize dates, URLs, and nano's release motto
+      syntax: email: use a character class, as \s does not work inside brackets
+      syntax: gentoo: remove file -- Gentoo itself will have to handle it
+      syntax: nanorc: add 'execute' menu for unbind, and drop a bad constraint
+      syntax: nanorc: avoid colorizing #rgb codes as if they were comments
+      syntax: nanorc: colorize a trailing comment when it begins with non-hex
+      syntax: nanorc: colorize each of the fourteen new color names as valid
+      syntax: nanorc: improve the file-matching regex
+      syntax: nanorc: paint arguments of 'include' and 'extendsyntax' specially
+      syntax: nanorc: require whitespace before the start= and end= keywords
+      syntax: python: colorize backslash escapes, such as \n and \xef
+      syntax: ruby: colorize embedded documentation as a comment
+      syntax: rust: do not colorize as string the text between two strings
+      syntax: sql: add a few more missing keywords, like TRUE and FALSE
+      syntax: sql: add more missing keywords, like INNER and OUTER JOIN
+      syntax: sql: add some missing keywords, like ALL and ANY and OR
+      syntax: sql: add two missing data types -- xml and tsquery
+      syntax: sql: colorize as flow control only keywords that clearly are such
+      syntax: sql: colorize keywords regardless of case, and tweak the colors
+      syntax: sql: colorize only single-quoted things as strings
+      syntax: sql: colorize strings differently than types
+      syntax: sql: remove alien stuff -- it was copied mostly from ruby syntax
+      syntax: texinfo: be more precise in colorizing @commands
+      syntax: texinfo: colorize the special @-plus-punctuation commands too
+      syntaxes: avoid coloring "this\" as if it were a valid string
+      syntaxes: colorize hex more strictly by using character class [:xdigit:]
+      syntaxes: drop three redundant end-of-line anchors
+      syntaxes: undouble the backslash within bracket expressions
+      syntaxes: use one regex for coloring quoted strings, to avoid overlap
+      tabbing: also with --zero, stay one row away from the prompt bar
+      tweaks: add an auxiliary variable, to prepare for handling --zero
+      tweaks: add two spaces and two comments, and drop an internal check
+      tweaks: adjust two values -- help lines need at least 6 rows to be shown
+      tweaks: avoid a compiler warning with --enable-tiny --enable-linenumbers
+      tweaks: avoid redrawing the entire window when just a 'touch' will do
+      tweaks: condense the definitions of all the empty functions
+      tweaks: condense the regexes for Types in the SQL syntax
+      tweaks: don't redraw the help lines (if present), and normalize a brace
+      tweaks: drop a fragment of code that became functionless
+      tweaks: elevate two messages, so they get shown with --mini or --zero
+      tweaks: elide a variable that is confusing and has just one use case
+      tweaks: elide two functions that each were called just once
+      tweaks: elide two parameters, as they are now always the same
+      tweaks: exclude some hidden-interface code from the tiny version
+      tweaks: exclude some suspension code from the tiny version
+      tweaks: fix a parentheses mistake -- found by a warning from Clang
+      tweaks: fix a somewhat humorous typo
+      tweaks: fix typo, and improve description of 'set zero' in sample nanorc
+      tweaks: fold a special case into the general one
+      tweaks: fold some regexes together, and trim or improve some comments
+      tweaks: frob a couple of comments, and drop two, for conciseness
+      tweaks: improve a comment, and drop two cluttering compile conditions
+      tweaks: invert a condition, to get an early return instead of indentation
+      tweaks: just let do_wrap() set 'refresh_needed' instead of returning TRUE
+      tweaks: mark keystrokes consistently with @kbd in the manual
+      tweaks: move a translator hint to where xgettext will see it
+      tweaks: normalize whitespace, drop unneeded prototype, condense comment
+      tweaks: on one-row terminals, suppress the message for two toggles
+      tweaks: place the unsetting of a flag better, and rename a variable
+      tweaks: put three email addresses between the customary angled brackets
+      tweaks: reassign a copy of a string to a variable more economically
+      tweaks: reduce redundancy (--enable-color implies --enable-nanorc)
+      tweaks: remove redundant pair of parentheses, and swap two alternatives
+      tweaks: remove redundant parentheses, trim comments, fold some regexes
+      tweaks: remove two unneeded unsettings
+      tweaks: rename a function and its parameter, to be clearer
+      tweaks: rename a function, away from using an abbreviation
+      tweaks: rename a function, for some contrast and to get rid of a suffix
+      tweaks: rename a function, to describe better what it does nowadays
+      tweaks: rename a function, to make it make sense
+      tweaks: rename a variable, to be distinctive and less confusing
+      tweaks: rename a variable, to be easier to read and to make more sense
+      tweaks: rename five empty functions, to get rid of a meaningless suffix
+      tweaks: rename three functions, to better fit the general scheme
+      tweaks: rename three parameters, away from single letters
+      tweaks: rename two empty functions, to be more to the point
+      tweaks: rename two functions, to get rid of another senseless suffix
+      tweaks: rename two functions, to get rid of one more senseless suffix
+      tweaks: rename two functions, to get rid of the senseless suffix of one
+      tweaks: rename two more functions, to lose a senseless suffix
+      tweaks: rename two parameters and one variable, away from single letters
+      tweaks: rename two variables, away from abbreviations
+      tweaks: rename two variables, to fit with the names of similar ones
+      tweaks: replace a verbose condition with a simpler early return
+      tweaks: replace the obscure @* with the slightly clearer @sp
+      tweaks: replace two direct refreshes with two scheduled ones
+      tweaks: reshuffle a coloring rule, to have related ones together
+      tweaks: reshuffle a few lines, and rename a variable
+      tweaks: reshuffle a few lines, for Christmas and to group things better
+      tweaks: reshuffle a fragment of code to a better place
+      tweaks: reshuffle a line and adjust indentation after previous change
+      tweaks: reshuffle a line into its proper order, and improve two comments
+      tweaks: reshuffle some conditions, so that the ifs have similar formats
+      tweaks: reshuffle some conditions, to have more balanced lines
+      tweaks: reshuffle some lines, one for clarity, others for conciseness
+      tweaks: reshuffle the flag conversion into their order in the help text
+      tweaks: reshuffle two conditions, re-indent, and rewrap a line
+      tweaks: reword a paragraph, and use usual M- to depict Meta keystrokes
+      tweaks: rewrap an old news item, for distraction
+      tweaks: rewrap three old NEWS items, for esthetics, and fix a date
+      tweaks: shorten a comment, and drop some conditionalizing
+      tweaks: shorten the description of --zero in the manuals a bit
+      tweaks: shorten two comments, and fold two statements together
+      tweaks: swap two parts of specific regexes, for consistency with others
+      tweaks: untangle two case items, and shorten a message
+      tweaks: use a color closer to the rest of the string, to reduce contrast
+      tweaks: use a few fewer capitals, and drop an unneeded synonym
+
+Brad Town (2):
+      docs: add a description of the hexadecimal #rgb color specification
+      rcfile: support #rgb format for specifying colors in 256-color terminals
+
+
+Changes between v5.8 and v5.9:
+------------------------------
+
+Benno Schulenberg (88):
+      browser: make the keystrokes ^W^Y and ^W^V work again
+      build: ensure that mkstemps() is available by importing the gnulib module
+      build: help Haiku find the header files that define mkstemps()
+      bump version numbers and add a news item for the 5.9 release
+      copyright: update to the current year for significantly changed files
+      cutting: copy anchors into the cutbuffer, so that undo can restore them
+      docs: add a paragraph at the start of the README about what nano is
+      docs: add a simulated "screenshot" of nano to the README
+      docs: add some details to the bug-reporting paragraph in the README
+      docs: correct the descriptions of how to invoke the spell checker
+      docs: don't use "light" after "bold", as the latter often implies "light"
+      docs: improve the description of the spotlighting of a search match
+      docs: improve the description of the 'tabstospaces' option
+      docs: improve the descriptions of several bindable functions
+      docs: improve the recipe in the FAQ for dealing with Alt+Up on a console
+      docs: indent the paragraphs in the FAQ that list commands to be typed
+      docs: list the default color combo for 'spotlightcolor' in sample nanorc
+      docs: mention how to properly colorize all types in nano's source code
+      docs: mention in the README which licenses cover nano's code and docs
+      docs: move the notice in the main man page, to try and catch other eyes
+      docs: refer to the FAQ when <Alt+Up> does nothing on a Linux console
+      docs: replace a non-problem in the FAQ with something possibly useful
+      docs: spell "filename" as a single word, like in most other occurrences
+      feedback: use a smaller diamond to represent an anchor, to not overflow
+      feedback: when not in curses mode, just skip displaying any message
+      feedback: when not in curses mode, write error messages to the terminal
+      files: add the original file's suffix to the name of a temporary file
+      files: check for a fifo only when it is an existing file
+      files: check the result of fdopen(), to avoid a possible crash
+      files: do not call fsync() on a fifo, to avoid a spurious error message
+      files: exclude the call of fsync() from the tiny version
+      files: give the user time to absorb a warning about someone else editing
+      files: making a backup of a fifo makes no sense, so do not try that
+      files: prepending to a fifo makes no sense, so do not try that
+      files: when the buffer is nameless, include the PID in name of dump file
+      files: when there is a slash after the dot, then there is no extension
+      files: write a lock file also for a freshly saved buffer
+      general: prevent die() from getting recursed into
+      gnulib: update to its current upstream state
+      help: make the keystrokes ^W^Y and ^W^V work again
+      history: emit a warning when file cannot be made private  [coverity]
+      input: give up on the input stream only after millions of errors
+      memory: free any allocated strings, also in the emergency code path
+      po: delete the ancient PO files for Indonesian and Nynorsk
+      po: permit the Indonesian PO file to come back -- there was a big update
+      shutdown: when dying, do not install/restore a handler for Ctrl+C
+      startup: if TERM is unset, try falling back to VT220 instead of failing
+      syntax: nanorc: recognize also the template of the sample nanorc file
+      syntax: rust: update the license to GPL3 or newer
+      syntax: yaml: allow any character in tags except whitespace
+      syntax: yaml: allow double colon in key & do not colorize unspaced colon
+      syntax: yaml: allow slash and period in key names
+      syntax: yaml: colorize backslash-escaped characters as valid or invalid
+      syntax: yaml: colorize the question mark of complex mappings too
+      syntax: yaml: colorize the two known directives
+      syntax: yaml: new file -- coloring rules for YAML files
+      tweaks: add Schiermonnikoog to the list of friendly islands
+      tweaks: adjust a description of 'showcursor', to match the other ones
+      tweaks: adjust three parameters -- two were mistaken, one superfluous
+      tweaks: correct two typos and a spello  [codespell]
+      tweaks: fix a typo
+      tweaks: fold two lines into two others, for conciseness
+      tweaks: harmonize the indentations in the FAQ somewhat
+      tweaks: in comments, say "buffer" instead of "file" where appropriate
+      tweaks: instead of "one" use "you", like in the rest of the man page
+      tweaks: remove a redundant feedback message
+      tweaks: rename a defined type, to fit within the general pattern
+      tweaks: rename a function, to be more fitting
+      tweaks: rename a parameter and invert its logic
+      tweaks: rename a parameter, to fit better what it is used for
+      tweaks: rename a variable and flip its logic, to avoid two negations
+      tweaks: rename a variable, away form an abbreviation
+      tweaks: rename a variable, to be more grammatical
+      tweaks: rename a variable, to be more visible and to match others
+      tweaks: rename a variable, to make more sense
+      tweaks: rename three variables, to follow the general scheme
+      tweaks: reshuffle a few lines, for esthetics and to elide an #ifdef
+      tweaks: reshuffle a few lines to avoid an #ifdef and unbalanced braces
+      tweaks: reshuffle a fragment of code, to prepare for the next change
+      tweaks: reshuffle some code to elide a variable, and improve a comment
+      tweaks: reshuffle some lines and adjust some indentation
+      tweaks: reshuffle some lines to elide a variable
+      tweaks: restore a quote that was accidentally deleted four months ago
+      tweaks: rewrap three lines, for esthetics
+      tweaks: slightly reword or rewrap some comments in the sample nanorc
+      tweaks: try chmodding a dump file only when it was actually written
+      tweaks: use five symbolic names, to make eight function calls clearer
+      usage: improve the description of the --positionlog option
+
+David Michael (2):
+      syntax: gentoo: highlight additional EAPI 7/8 variables
+      syntax: gentoo: remove some obsolete keywords and add some new ones
+
+Hussam al-Homsi (3):
+      docs: correct the default value of the errorcolor option
+      syntax: perl, ruby: remove arbitrary highlighting of here documents
+      tweaks: change 'return ++var;' to 'return var + 1;'
+
+
+Changes between v5.7 and v5.8:
+------------------------------
+
+Benno Schulenberg (53):
+      bindings: show either "^/" or "^-" in the help lines, instead of "^_"
+      bump version numbers and add a news item for the 5.8 release
+      display: when a message gets overwritten, note that it is cleared
+      docs: add a relevant item to the news for the 4.3 release
+      docs: add example bindings for uppercasing and lowercasing a word
+      docs: improve the contact info and some line spacing in the PDF
+      docs: make ^E access the Execute menu in the example CUA bindings
+      docs: mention that "grey"/"gray" may be used as a synonym of "lightblack"
+      docs: mention the new 'set minicolor' option
+      docs: say thanks to the Icelandic and Slovak translators
+      feedback: ensure that the reporting of DOS/Mac format is truthful
+      gnulib: update to its current upstream state
+      help: use smaller triangles for the arrows
+      linter: block the resizing signal while reading output from the linter
+      linter: strip filename and line plus column number from the message
+      memory: move the correct number of bytes, and not one too many
+      memory: prevent a leak when copying the leading quoting to the next line
+      minibar: stay out of sight when the terminal has just one row
+      options: accept 'set minicolor' for setting the color of the minibar
+      rcfile: allow using "grey" or "gray" as a synonym for "lightblack"
+      rcfile: do not allow color name "normal" to have a prefix
+      replacing: report the number of replacements also on a one-row terminal
+      search: automatically drop the spotlighting after a few moments
+      search: show "This is the only occurrence" also on a one-row terminal
+      startup: allow using a bare "+" to mean put-cursor-on-last-line
+      startup: do not accept stray characters after a "+" on the command line
+      startup: skip drawing edit window when having message on one-row terminal
+      startup: suppress "Search Wrapped" when using +? to search from EOF
+      statusbar: ensure that "No further matches" does not get overwritten
+      statusbar: on a one-row terminal, drop light messages after a few moments
+      statusbar: suppress --constantshow when the terminal has just one row
+      statusbar: suppress the cursor when the terminal has just one row
+      syntax: nanohelp: avoid colorizing M-) in (M-) and M-" in "M-"
+      syntax: nanorc: colorize "light" as valid only for the eight basic colors
+      syntax: nanorc: colorize literal control codes, to make them stand out
+      syntax: php: colorize the full short tag for echo (<?=)
+      tweaks: avoid the subtraction of two size_t variables becoming negative
+      tweaks: condense and correct a comment, and move another
+      tweaks: condense some code by putting all color names in a single array
+      tweaks: drop an assignment that is already part of the called function
+      tweaks: frob some whitespace, and rewrap a line
+      tweaks: improve a comment, remove unneeded braces, reshuffle some lines
+      tweaks: normalize the indentation after the previous change
+      tweaks: prevent two more size_t subtractions from going negative
+      tweaks: redraw only the affected line instead of doing a full refresh
+      tweaks: remove a check that has become superfluous
+      tweaks: remove a check that is not needed
+      tweaks: rename a variable, for contrast with the function name
+      tweaks: rename two functions, to get rid of an ugly _void suffix
+      tweaks: reshuffle the coloring of color names, to remove some duplication
+      tweaks: use a symbol instead of a hard-coded number
+      tweaks: use two symbolic names instead of TRUE and FALSE, for clarity
+      wrapping: when copying the quoting part, adjust the file size accordingly
+
+Hussam al-Homsi (1):
+      bindings: allow copying text (with M-6) also when in view mode
+
+
+Changes between v5.6.1 and v5.7:
+--------------------------------
+
+Benno Schulenberg (62):
+      build: drop the check for two functions that we don't use any more
+      build: fix compilation for --enable-tiny plus --enable-multibuffer
+      build: fix compilation when configured with --disable-multibuffer
+      build: fix compilation when configured with --enable-tiny
+      bump version numbers and add a news item for the 5.7 release
+      chars: implement mblen() ourselves, for efficiency
+      chars: implement mbtowc() ourselves, for more efficiency
+      chars: work around a UTF-8 bug in glibc, to display invalid codes right
+      chars: work around the wrong private-use-character widths on OpenBSD
+      display: avoid determining twice from and until where to draw each row
+      display: make the output of --constantshow less jittery
+      editing: prevent the pointer for the top row from becoming dangling
+      feedback: upon first switch to a buffer, show its error message (if any)
+      files: always register the format, also when the file is unwritable
+      files: create a new buffer earlier, so that error messages can be stored
+      files: when Mac format has been detected, stay with it
+      gnulib: pull in the fix for a build problem on older Debian
+      gnulib: update to its current upstream state
+      indicator: adjust the size to the number of visible lines, not chunks
+      input: accept Unicode codes for non-characters as valid, since they are
+      memory: do not allocate space for multidata when it's already allocated
+      memory: fix an off-by-one error to free also the last line in a group
+      memory: prevent a use-after-free when the user respects a lock file
+      oops: that doesn't work -- you can't break out of two for loops at once
+      options: retire the obsolete 'smooth', 'morespace', and 'nopauses'
+      softwrap: avoid time-consuming computations, to burden large files less
+      startup: do not crash when trying to open a device or directory
+      startup: do not store an error message in the record of another buffer
+      startup: save the compiled file-matching regexes, to avoid recompiling
+      startup: show the helpful message only when ^G has not been rebound
+      syntax: c: colorize also labels that contain digits, and uncolorize colon
+      syntax: po: improve the coloring of format specifiers
+      syntaxes: replace [[:space:]] with [[:blank:]] to exclude carriage return
+      tweaks: adjust and improve one comment, and frob another
+      tweaks: adjust two comments, and reshuffle two fragments
+      tweaks: avoid a warning on newer compilers, by writing an extra byte
+      tweaks: avoid calling extra_chunks_in() when not softwrapping
+      tweaks: avoid converting a file name for more than will fit on screen
+      tweaks: avoid parsing a multibyte character twice
+      tweaks: condense three comments, drop another, and rewrap a line
+      tweaks: drop unneeded braces and adjust indentation after previous change
+      tweaks: elide a call of strlen() for every row
+      tweaks: elide a function that is now basically just two lines
+      tweaks: elide an unneeded resetting NULL call to wctomb()
+      tweaks: elide a small function that is used just once
+      tweaks: elide the pointless is_valid_unicode() function
+      tweaks: elide two more instances of useless character copying
+      tweaks: improve a couple of comments
+      tweaks: morph a function into what it is actually used for
+      tweaks: normalize the indentation after an earlier change
+      tweaks: put the most likely condition first, for a quicker return
+      tweaks: reduce the maximum character length from six bytes to four
+      tweaks: remove a misplaced (and nested) #ifdef
+      tweaks: rename a variable, away from an abbreviation
+      tweaks: rename a variable, for contrast with another
+      tweaks: reshuffle a comment, and put the main extension first
+      tweaks: reshuffle a fragment of code, to prepare for the next change
+      tweaks: reshuffle two conditions, to have the most unlikely one first
+      tweaks: set the file format only when unset, so it doesn't need saving
+      tweaks: shorten a comment and trim an #ifdef
+      tweaks: simplify two fragments of code
+      tweaks: simplify two fragments of code, eliding useless character copying
+
+Hussam al-Homsi (1):
+      syntax: c: make the highlighting of '#include <...>' more compliant
+
+Mike Frysinger (1):
+      syntax: tcl: support Expect scripts too
+
+
+Changes between v5.6 and v5.6.1:
+--------------------------------
+
+Benno Schulenberg (4):
+      bump version numbers and add a news item for the 5.6.1 release
+      options: rename 'highlightcolor' to the more distinct 'spotlightcolor'
+      search: correctly colorize a match also when softwrapping is active
+      tweaks: rename a symbol, to better match the corresponding option
+
+
+Changes between v5.5 and v5.6:
+------------------------------
+
+Benno Schulenberg (52):
+      build: avoid a warning about duplicate symbol when building from tarball
+      build: detect a build from git also when building out of tree
+      build: include a workaround only for versions of ncurses that need it
+      bump version numbers and add a news item for the 5.6 release
+      color: do not look for another 'end' match after already finding one
+      color: give highlighted text its own color, to not look like marked text
+      color: recompile the file-probing regexes a little faster with REG_NOSUB
+      color: use bright yellow to highlight a search match
+      color: use inverse video for highlighting when there are no colors
+      debug: add timing instruments to cache precalculation and screen refresh
+      display: for a large paste or insertion, recalculate the multiline cache
+      docs: correct the description of --quickblank for the changed base value
+      docs: correct the formatting of a comment in the sample nanorc
+      docs: correct the word order for Alt+D in the cheat sheet -- it changed
+      docs: mention the new 'set highlightcolor' option
+      docs: remove all mentions of --markmatch and 'set markmatch'
+      docs: say that --minibar is modified by --constantshow and --stateflags
+      feedback: make Full Justify show a message also when using --minibar
+      gnulib: update to its current upstream state
+      minibar: show a message a little longer when --quickblank isn't used
+      minibar: show cursor position + character code only with --constantshow
+      minibar: show the state flags only when --stateflags is used
+      minibar: suppress the toggling feedback for M-C, but show it for M-Y/M-P
+      options: remove --markmatch and 'set markmatch', as the behavior is gone
+      painting: always do backtracking for the first row of the screen
+      painting: trigger a refresh when a second start match appears on a line
+      painting: trigger fewer unneeded full-screen refreshes
+      painting: when finding an end match, set its multidata right away
+      scrolling: keep centering after large paste, also when line numbers widen
+      search: just highlight the found occurrence, instead of marking it
+      search: make highlighting the standard, non-changeable behavior
+      tweaks: avoid the vague possibility of advancing beyond end-of-line
+      tweaks: be slightly more efficient in marking lines as WOULDBE
+      tweaks: call wattron()/wattroff() only when actually painting something
+      tweaks: correct a comment, improve another, and trim some verbosity
+      tweaks: don't bother comparing virgin multidata with current situation
+      tweaks: don't bother initializing freshly allocated multidata
+      tweaks: don't bother wiping the multidata before recomputing it
+      tweaks: elide a function that is now just one line
+      tweaks: frob a condition, to be more concise, and reshuffle another
+      tweaks: frob some comments, and adjust indentation after previous change
+      tweaks: frob some comments, and reshuffle two fragments of code
+      tweaks: frob two fragments of code, to be more readable
+      tweaks: make a skipping condition more precise
+      tweaks: remove an old fix that was made superfluous by a recent fix
+      tweaks: remove a strangely placed warning
+      tweaks: rename six symbols, to be more straightforward
+      tweaks: reshuffle some code, and reduce the scope of a variable
+      tweaks: reshuffle three conditions into a better order
+      tweaks: rewrap and reindent a few lines
+      tweaks: rewrap two lines, for esthetics
+      tweaks: stop evaluating a rule when the match is offscreen to the right
+
+
+Changes between v5.4 and v5.5:
+------------------------------
+
+Benno Schulenberg (84):
+      build: fix compilation for --enable-{tiny,help,multibuffer}
+      build: fix compilation when configured with --disable-utf8
+      build: fix compilation when configured with --enable-tiny
+      build: remove the '--with-slang' configure option
+      bump version numbers and add a news item for the 5.5 release
+      chars: short-circuit determining the width of characters under U+0300
+      chars: speed up the handling of invalid UTF-8 starter bytes
+      copyright: update the years for the FSF
+      display: add code for showing minimal state-information bar at the bottom
+      display: do not show the state flags in the help viewer or file browser
+      docs: explain the effect of --minibar / -_ / 'set minibar'
+      docs: explain the purpose of --markmatch / -^ / 'set markmatch'
+      docs: insert links to the mailing-list archives into the README
+      docs: mention in NEWS that some workarounds were removed
+      docs: mention the new 'set promptcolor' option
+      docs: remove all mentions of Slang
+      feedback: differentiate between remarks, mistakes, and information
+      feedback: wipe the status bar by default after 20 keystrokes
+      files: when truncating a file name, give an indication of this
+      general: remove support for Slang
+      gnulib: update to its current upstream state
+      input: intercept ^Z also when --minibar is active
+      input: interpret a keystroke as Meta only when an earlier escape was solo
+      memory: avoid leaking the speller or linter command string, when invoked
+      minibar: add an [x/y] "counter" when multiple files are open
+      minibar: add a percentage that shows how far the cursor is into the file
+      minibar: allow the number-of-lines to overrule also the state flags
+      minibar: allow the number-of-lines to overrule location + character code
+      minibar: drop the side spaces before suppressing the state flags
+      minibar: represent bytes as 0xNN and valid Unicode code points as U+NNNN
+      minibar: show the info bar again some 0.8 seconds after a message
+      minibar: show the line count in the bar (at startup and when saving)
+      minibar: show Unicode codes when in a UTF-8 locale
+      minibar: suppress some elements when there is no room to show them
+      minibar: when the next character has zero width, show its code too
+      minibar: when the overnext character has zero width too, show its code
+      mouse: do not offset the shortcuts by 'margin' when using --linenumbers
+      oops: use the correct condition for checking the last line will change
+      options: accept 'set promptcolor' for setting the color of the prompt bar
+      options: add --markmatch and -^ for activating the select-match behavior
+      options: add --minibar and -_ for activating basic state-information bar
+      prompt: restore a workaround for a cursor misplacement bug in ncurses
+      prompt: suppress the ">" character always when exactly at the right edge
+      rcfile: rename 'nowrap' toggle to 'breaklonglines', to match the option
+      search: set the mark at the end of a found match so it gets highlighted
+      search: suppress the cursor when highlighting a match
+      speller: do an internal spell check when --speller is an empty string
+      speller: strip leading whitespace from command, to avoid a sneaky crash
+      syntax: go: add author and license line
+      syntax: nanorc: colorize 'bookstyle' as a valid option
+      syntax: nanorc: colorize 'set promptcolor' as valid
+      syntax: sh: recognize shebangs with any shell after 'env', not just 'sh'
+      tweaks: adjust the indentation after the previous change
+      tweaks: avoid compilation warnings on 32-bit machine plus newer compiler
+      tweaks: avoid computing the cursor column twice, and the "page" too
+      tweaks: avoid hitting negative values when using size_t
+      tweaks: change an intermediate variable to a better one
+      tweaks: clean up after the previous change
+      tweaks: condense the description of how to report a bug
+      tweaks: correct a translator hint
+      tweaks: correct two comments after the previous changes
+      tweaks: do not change the pointer, but move the content of the string
+      tweaks: drop a small optimization for invalid UTF-8 starter bytes
+      tweaks: elide a variable, by using a reallocation instead
+      tweaks: fold some conditions into bitwise masks, for efficiency
+      tweaks: fold two similar and three identical cases together
+      tweaks: move 'set indicator' to its alphabetical place in the manual
+      tweaks: move the displaying of the state letters into a separate function
+      tweaks: push back the deprecation of the 'set nowrap' option
+      tweaks: put the new options in a consistent order in the code
+      tweaks: reduce the scope of a static variable
+      tweaks: remove some #ifdefs that were there only for Slang
+      tweaks: rename a variable, to be similar to its sister
+      tweaks: reshuffle a condition, to probably avoid an unneeded calculation
+      tweaks: reshuffle an option, to have two related ones grouped together
+      tweaks: reshuffle some lines, to group things better
+      tweaks: reshuffle some lines, to have most #includes near the beginning
+      tweaks: reshuffle some more lines, to have most #defines together
+      tweaks: reshuffle two lines, and rename a variable to a plain word
+      tweaks: reword the description of an option
+      tweaks: simplify a bit of logic
+      tweaks: use a boolean instead of an enumeration of two values
+      undo: remove the added magic line when a replacement caused one
+      weeding: remove some obsolete information from the README
+
+OIX (1):
+      mouse: update title bar (the M flag) when the click is on the cursor
+
+
+Changes between v5.3 and v5.4:
+------------------------------
+
+Benno Schulenberg (31):
+      bindings: accept b for scrolling back up in help viewer and file browser
+      build: exclude a workaround for VTE/Konsole when using a recent ncurses
+      build: include a workaround for VTE only when using an older libvte
+      bump version numbers and add a news item for the 5.4 release
+      copyright: update to the current year for significantly changed files
+      docs: adjust for the changed name of the header-file package on Debian
+      docs: use standard-compliant HTML entities for the four arrows
+      feedback: abort when user tries to open multiple files in tiny version
+      gnulib: update to its current upstream state
+      help: allow the penultimate item extra space when the number is uneven
+      help: show all valid help items also in the Write-Out menu
+      linting: avoid putting the cursor beyond the end of the line
+      moving: skip combining characters and other zero-width characters
+      options: do not spew out the help text when an option is not recognized
+      prompt: skip over combining characters also when editing a search string
+      rcfile: stop accepting 'set view' in a nanorc file, and undocument it
+      statusbar: properly pluralize the line+word+character count report
+      tweaks: avoid copying an option's argument when there is no need
+      tweaks: normalize the formatting after the previous two changes
+      tweaks: rename two variables and improve two comments
+      tweaks: rename two variables, one for contrast, another for visibility
+      tweaks: reshuffle a fragment of code, for clarity
+      tweaks: reshuffle a line, elide two braces, and adjust the indentation
+      tweaks: reshuffle three lines and elide braces after the previous change
+      tweaks: slightly shorten a loop, to place the actual action outside of it
+      tweaks: use the standard symbols for the three standard file descriptors
+      utils: die when trying to allocate zero bytes
+      weeding: remove another unneeded workaround for VTE
+      weeding: remove a workaround for early versions of ncurses-6.0
+      weeding: remove a workaround for versions of ncurses before 5.9
+      weeding: remove a workaround for VTE that is not needed
+
+
+Changes between v5.2 and v5.3:
+------------------------------
+
+Arturo Borrero González (1):
+      syntax: nftables: include author and license lines
+
+Benno Schulenberg (92):
+      browser: make M-W/M-Q functional right after startup, if there is history
+      browser: sort names that differ only in case with uppercase first
+      browser: wipe the status bar before searching again with M-W or M-Q
+      build: abort the update script if a PO file contains a control character
+      build: avoid two compiler warnings when gnulib has been ripped out
+      build: do not accept --enable-libmagic when not having color support
+      build: do not let Slang translate escape sequences to key codes
+      build: exclude bunches of raw escape sequences from the tiny version
+      build: exclude --emptyline, --jumpyscrolling, and --noread from tiny nano
+      build: exclude excessive version information from the tiny version
+      build: exclude option --tabsize (-T) from the tiny version
+      build: exclude reading a file from standard input from the tiny version
+      build: exclude the three --help column headers from the tiny version
+      build: include some raw sequences for the graphical Debian installer
+      build: stop using an obsolete macro, and use 'void' for signal handlers
+      build: to verify wide curses, probe for a function that cannot be a macro
+      bump version numbers and add a news item for the 5.3 release
+      chars: reduce searching time with roughly 85 percent for plain ASCII
+      display: do not unnecessarily wipe the status bar
+      display: do not wipe the status bar when the terminal has just one row
+      display: force the cursor to reappear after a message (when using Slang)
+      display: force the cursor to reappear in a better way (when using Slang)
+      display: skip a special-case refresh when a message was written
+      docs: add a link to the website also to the info manual
+      docs: add the customary (1) after the name of command-line programs
+      docs: condense the descriptions of cutting and pasting
+      docs: explain the purpose of -! / --magic / 'set magic'
+      docs: explain the 'set scrollercolor' option, for coloring the indicator
+      docs: explain what the options --stateflags (-%) and 'set stateflags' do
+      docs: improve two wordings in the sample nanorc
+      docs: mention that syntax definitions are available in /usr/share/nano/
+      feedback: don't give a hint for <Bsp>, and not after an Alt+key was used
+      feedback: in the tiny version, let M-H show the helpful hint too
+      feedback: make an "Unbound key" message disappear on the next keystroke
+      feedback: show a helpful message for ^G even when there is no help
+      feedback: show helpful message for the first ^H at the top of the file
+      gnulib: update to its current upstream state
+      help: do not leave the cursor on the status bar after a search
+      help: do not show "^G Help" in the tiny version when there is no help
+      help: ensure the help lines are always drawn, also when using Slang
+      help: in the tiny version, show Prev/Next Word before Backward/Forward
+      help: nicely pair menu items also when built with just --disable-help
+      new feature: option --stateflags to show some states in top-right corner
+      options: add -? as a synonym of -h (--help), but leave it undocumented
+      options: move --stateflags (-%) and --magic (-!) to the end of the list
+      options: require --magic or 'set magic' to enable the use of libmagic
+      rcfile: add 'set scrollercolor', for changing the color of the indicator
+      suspension: do not enter an invalid byte upon resume (when using Slang)
+      suspension: properly resume from an external SIGSTOP
+      suspension: resume properly from an external SIGSTOP (when using Slang)
+      suspension: switch off flow control at the right moment (for Slang)
+      syntaxes: add author and license lines to four of the files
+      syntax: nanorc: stop coloring 'morespace' and 'smooth' as valid
+      syntax: nanorc: stop coloring 'nopauses' and 'nowrap' as valid
+      syntax: nanorc: stop coloring 'quiet' and 'backwards' and 'finalnewline'
+      syntax: po: do not leave the occasional tab with a red background color
+      syntax: po: highlight embedded control codes that shouldn't be there
+      syntax: sh: recognize some shell scripts by their Emacs modeline
+      tweaks: add a hint for translators
+      tweaks: add some comments to the C syntax, and sort some keywords
+      tweaks: adjust some whitespace in the docs, and improve a comment
+      tweaks: avoid a compiler warning when compiling with more than -O1
+      tweaks: condense a bit of code
+      tweaks: condense a bit of code after the previous change
+      tweaks: drop the unneeded saving and restoring of a global variable
+      tweaks: dummy commit, to add some info about the previous one
+      tweaks: elide a one-line function, after reducing it to a single call
+      tweaks: fold one function into another, to elide an unneeded return value
+      tweaks: harmonize the spelling of a compound word, and rewrap a section
+      tweaks: harmonize the style of error messages and warnings in ./configure
+      tweaks: make two of the changes that 'autoupdate' suggests
+      tweaks: move three functions, to before the ones that call them
+      tweaks: move two more functions, to before the ones that call them
+      tweaks: move two more functions, to before the one that calls them
+      tweaks: normalize the indentation after the previous change
+      tweaks: remove an inconsistent newline from the end of an error message
+      tweaks: remove an unused element from 'funcstruct', saving 8 more bytes
+      tweaks: remove mistaken escape sequences for function keys on xterm
+      tweaks: remove two stray comments and two lines that were commented out
+      tweaks: rename another variable, away from being misnamed
+      tweaks: rename four variables, reshuffle them, and correct one type
+      tweaks: rename two elements of history struct, away from abbreviations
+      tweaks: rename two variables, to be more distinct
+      tweaks: replace two more occurrences of 'AC_TRY_RUN' with 'AC_RUN_IFELSE'
+      tweaks: reshuffle a condition, to elide a blank string
+      tweaks: reshuffle some lines after the previous change
+      tweaks: reshuffle some lines and adjust indentation after previous change
+      tweaks: reshuffle two lines and a function name, for a consistent order
+      tweaks: rewrap nine more old NEWS items, for balanced line lengths
+      tweaks: rewrap three NEWS items, for more balanced line lengths
+      tweaks: stop 'autoupdate' from failing with "end of file in string"
+      version: remove URL and email address from the --version output
+
+Hussam al-Homsi (5):
+      syntax: c: colorize also one-character constants, and the null directive
+      syntax: c: colorize also the keywords that start with an underscore
+      syntax: c: colorize also the 'restrict' keyword, and the #line directive
+      tweaks: reorder a member of 'funcstruct', to save 8 bytes of padding
+      tweaks: stop casting the return of malloc() and friends
+
+Ryan Westlund (1):
+      syntax: markdown: add author and license line
+
+
+Changes between v5.1 and v5.2:
+------------------------------
+
+Benno Schulenberg (30):
+      build: stop distributing the README.GIT file
+      build: stop mentioning Slang in two ./configure messages
+      bump version numbers and add a news item for the 5.2 release
+      display: restore the ability to resize the screen while searching
+      docs: add a cross-reference from 'findbracket' to 'set matchbrackets'
+      docs: adjust description of ^T in cheatsheet, and mention M-Bsp
+      docs: mention in the FAQ how to change the escape sequences of urxvt
+      docs: reshuffle the section about the file browser to a better place
+      gnulib: back away from a commit that causes trouble when using clang
+      gnulib: update to its current upstream state
+      history: do not interpret a failing stat() as an error
+      input: allow also a Meta keystroke to abort a Search command
+      input: dawdle after an ESC also when --rawsequences is used
+      input: discard any multibyte character when <Alt> is being held
+      input: do not enter invalid bytes when holding down both Alt keys
+      input: hold on to a shift-selected region when an unbound key is struck
+      rcfile: make sure that "bright"/"light" are prefixes, not separate words
+      replacing: do not try to wipe nonexistent multidata, to avoid crashing
+      search: poll the input stream directly, not nano's own keystroke buffer
+      search: retain the current answer when something is toggled
+      tweaks: adjust a comment, and reshuffle the setting of a boolean
+      tweaks: condense two declarations
+      tweaks: condense two fragments of code, for compactness
+      tweaks: elide an unneeded variable
+      tweaks: improve three comments and an indentation
+      tweaks: move the keyboard-checking code to the end of the search loop
+      tweaks: remove a variable and two functions that have become redundant
+      tweaks: rename a variable, to not seem to refer to the scrollbar
+      tweaks: reshuffle four declarations, and rename two variables
+      verbatim: reserve enough space for the result also in non-UTF-8 locales
+
+
+Changes between v5.0 and v5.1:
+------------------------------
+
+Benno Schulenberg (55):
+      anchor: in a UTF-8 locale, show an anchor as a diamond, for visibility
+      anchor: show an anchor also when the line is horizontally scrolled
+      bindings: make <Alt+Backspace> delete a word backwards, like in Bash
+      build: fix compilation for --enable-tiny --enable-nanorc --enable-color
+      build: fix compilation when configured with --enable-tiny
+      build: stop distributing the two old Changelogs
+      bump version numbers and add a news item for the 5.1 release
+      display: show the cursor position also right after the screen is resized
+      docs: fix a closing tag in the FAQ  [tidy]
+      docs: mention that anchors are visible when line numbers are shown
+      feedback: add the reason to the error message when forking fails
+      feedback: use three dots to indicate processing, like everywhere else
+      feedback: when creating a pipe fails, report also the reason
+      files: do not try writing to the status bar while not in curses mode
+      formatter: force the mark off, to not crash by accessing empty cutbuffer
+      gnulib: update to its current upstream state
+      help: list again the keystroke for toggling the help lines (M-X)
+      input: understand M-Bsp also when terminfo does not match the terminal
+      moving: make <Ctrl+Up> go to the top when above the cursor all is blank
+      rcfile: allow to bind M-[  (even though it is an escape-sequence starter)
+      softwrap: initialize the 'extrarows' value for the magic line correctly
+      speller: give proper feedback when the user tries to check emptiness
+      speller: give startup feedback (relevant when running on a Linux console)
+      speller: re-enter curses mode before trying to report an error
+      syntax: css: differentiate pseudo-classes (now cyan) from comments (blue)
+      syntax: default: colorize also "GNU nano 5.x"
+      tweaks: adjust the indentation after the previous change
+      tweaks: adjust the indentation after the previous change
+      tweaks: avoid a maybe-uninitialized-variable warning from gcc
+      tweaks: elide an unneeded variable, by transforming the key code directly
+      tweaks: elide two variables that are no longer needed, and update comment
+      tweaks: exclude old and mistaken "Esc O" sequences from the tiny version
+      tweaks: make a few more direct returns, and reshuffle another bit of code
+      tweaks: make a misplaced call of statusline() more obvious by crashing
+      tweaks: normalize the indentation after the previous change
+      tweaks: normalize the indentation, and regroup two lines
+      tweaks: optimize for byte-range characters, and shorten some comments
+      tweaks: parse the escape-sequence bytes without copying them first
+      tweaks: pass first byte of sequence directly to the decoding function
+      tweaks: print error message directly instead of passing it to the caller
+      tweaks: read keycodes from the keystroke buffer without copying them
+      tweaks: remove an unneeded beep, and reshuffle the lines for compactness
+      tweaks: reshuffle a few lines, to condense the code, and improve comment
+      tweaks: reshuffle four lines, for esthetics
+      tweaks: reshuffle some fragments, to make the next change easier
+      tweaks: reshuffle the zeroing of a counter, to allow some direct returns
+      tweaks: simplify two functions, as they now return always NULL
+      tweaks: split a function into two, one for "Esc O" and one for "Esc ["
+      tweaks: stop using a 'switch' when there are just three possibilities
+      verbatim: discard entire keystroke when it's not valid for Unicode Input
+      verbatim: do not report "Invalid code" when a Unicode character is typed
+      verbatim: do not report "Invalid code" when the terminal is resized
+      verbatim: insert the full code sequence when <Alt+Backspace> is pressed
+      verbatim: pause a little after an ESC, to not miss a succeeding code
+      verbatim: report and ignore an invalid keystroke for Unicode input
+
+Michalis Kokologiannakis (2):
+      build: avoid compilation warnings by using memcpy() instead of strncpy()
+      files: ignore only EPERM when fchmod() or fchown() fails
+
+
 Changes between v4.9 and v5.0:
 ------------------------------
 
@@ -115,7 +966,7 @@ Benno Schulenberg (374):
       locking: prevent a symlink attack by not opening an existing lock file
       memory: plug a leak, by freeing the cutbuffer after a bracketed paste
       menus: remove unneeded words and shortenings from key labels
-      new feature: a position-plus-portion indicator on the righthand side
+      new feature: a position-plus-portion indicator on the right-hand side
       oops -- restore an accidentally changed file
       options: add --indicator and -q for switching on the scroll-bar thing
       options: add -O/--bookstyle to make leading whitespace mean new paragraph
@@ -175,7 +1026,7 @@ Benno Schulenberg (374):
       tweaks: adjust the conditional help-item pairing for absence of speller
       tweaks: adjust the file format indicator in a quicker way
       tweaks: adjust the indentation after the previous change
-      tweask: adjust the indentation after the previous change
+      tweaks: adjust the indentation after the previous change
       tweaks: avoid a compiler warning
       tweaks: avoid a function call when a simple boolean will do
       tweaks: avoid an unnecessary refresh for zero or just one completion
@@ -775,7 +1626,7 @@ Benno Schulenberg (166):
       tweaks: reshuffle some declarations, and expand a few variable names
       tweaks: reshuffle some lines, to avoid tallying the menus when not needed
       tweaks: reshuffle some lines, to group all ignored keystrokes together
-      tweaks: reshuffle three lines, to make the grouping tighther
+      tweaks: reshuffle three lines, to make the grouping tighter
       tweaks: reshuffle two lines, to do the linking first, then the content
       tweaks: reword two comments, and rewrap another
       tweaks: rewrap a comment and a line, and reshuffle a fragment of code
@@ -1239,7 +2090,7 @@ Benno Schulenberg (235):
       tweaks: elide a pre-processor #else clause, by using braces instead
       tweaks: elide a variable, drop a comment, and remove unneeded braces
       tweaks: elide two unneeded variables
-      tweaks: enforce the miminum amount of scrolling in a simpler way
+      tweaks: enforce the minimum amount of scrolling in a simpler way
       tweaks: exclude a bug check from the tiny version
       tweaks: exclude another bug check from the tiny version
       tweaks: factor out a fragment of code that is repeated three times
@@ -1259,7 +2110,7 @@ Benno Schulenberg (235):
       tweaks: move a function to the file where it is used
       tweaks: move an assignment that is useful only when searching forward
       tweaks: move a syntax check to a better place, to reduce duplication
-      tweaks: move the tyding-up-after-a-search to a single exit point
+      tweaks: move the tidying-up-after-a-search to a single exit point
       tweaks: normalize the indentation after the previous two changes
       tweaks: place a function better, and reduce some comments to a single one
       tweaks: put some timing code back into the search function
@@ -1465,7 +2316,7 @@ Benno Schulenberg (85):
       tweaks: rename a variable, to be more distinct and more descriptive
       tweaks: rename a variable, to get out of the way for another rename
       tweaks: rename some variables, for more contrast and to match others
-      tweaks: rename some variables, to be less repititious
+      tweaks: rename some variables, to be less repetitious
       tweaks: rename two variables, for more contrast
       tweaks: rename two variables, to be more distinct and more fitting
       tweaks: rename two variables, to make more sense
@@ -4089,3 +4940,8 @@ Mike Scalora (3):
 Rishabh Dave (2):
       browser: keep the same file selected when the directory contents change
       browser: move all openings and closings of a directory to the same function
+
+
+======================================================================
+For older changes, see in https://ftp.gnu.org/gnu/nano/nano-5.0.tar.xz
+======================================================================

IMPROVEMENTS

@@ -1,7 +1,20 @@
 Improvements in GNU nano
 ========================
 
+Since 6.0:
+  - Option --zero hides the interface and uses the whole terminal for editing.
+  - Colors can be given also in #rgb hexadecimal, to select the nearest color
+    from the 6x6x6 color-cube palette available on 256-color terminals.
+  - Fourteen new color names are available, from rosy to crimson.
+
 Since 5.0:
+  - A search briefly spotlights the found text, in black on yellow by default.
+  - Option --minibar reduces the interface to a bottom bar with basic info.
+  - The cursor skips over combining characters, <Del> deletes them together
+    with the character they combine with, but <Bsp> deletes them separately.
+  - For using libmagic the option --magic or -! or 'set magic' is required.
+  - With --stateflags the state of some things is shown in the title bar.
+  - M-Bsp deletes a word leftward.
   - With --indicator a "scrollbar" is shown, indicating position+portion.
   - M-Ins places an anchor, M-PgUp/M-PgDn jump to the nearest anchor.
   - Toggling help lines (M-X) and Refresh (^L) work nearly everywhere.

Makefile.am

@@ -6,8 +6,7 @@ if USE_COLOR
 SUBDIRS += syntax
 endif
 
-EXTRA_DIST = ChangeLog.1999-2006 ChangeLog.2007-2015 \
-		IMPROVEMENTS README.GIT
+EXTRA_DIST = IMPROVEMENTS
 
 ACLOCAL_AMFLAGS = -I m4
 

NEWS

@@ -1,3 +1,123 @@
+2021.12.15 - GNU nano 6.0 "Humor heeft ook zijn leuke kanten"
+• Option --zero hides the title bar, status bar and help lines, and
+  uses all rows of the terminal as editing area.  The title bar and
+  status bar can be toggled with M-Z.
+• Colors can now be specified also as three-digit hexadecimal numbers,
+  in the format #rgb.  This picks from the 216 index colors (that most
+  terminals know) the color that is nearest to the given values.
+• For users who dislike numbers, there are fourteen new color names:
+  rosy, beet, plum, sea, sky, slate, teal, sage, brown, ocher, sand,
+  tawny, brick, and crimson.
+• Suspension is enabled by default, invokable with ^T^Z.  The options
+  -z, --suspendable, and 'set suspendable' are obsolete and ignored.
+  (In case you want to be able to suspend nano with a single keystroke,
+  you can put 'bind ^Z suspend main' in your nanorc.)
+• When automatic hard-wrapping is in effect, pasting just a few words
+  (without a line break) will now hard-wrap the line when needed.
+• Toggling Append or Prepend clears the current filename.
+• The word count as shown by M-D is now affected by option --wordbounds;
+  with it, nano counts words as 'wc' does; without it (the new default),
+  words are counted in a more human way: seeing punctuation as space.
+• The YAML syntax file is now actually included in the tarball.
+
+
+2021.10.06 - GNU nano 5.9 "El manicomio ha decidido: mañana sol!"
+• The extension of a filename is added to the name of a corresponding
+  temporary file, so that spell checking a C file, for example, will
+  check only the comments and strings (when using 'aspell').
+• The process number is added to the name of an emergency save file,
+  so that when multiple nanos die they will not fight over a filename.
+• Undoing a cutting operation will restore an anchor that was located
+  in the cut area to its original line.
+• When using --locking, saving a new buffer will create a lock file.
+• Syntax highlighting for YAML files has been added.
+
+2021.06.15 - GNU nano 5.8 "Why is it necessary to be special?"
+• After a search, the spotlighting is dropped after 1.5 seconds (0.8
+  seconds with --quick) to avoid the idea that the text is selected.
+• A + and a space before a filename on the command line will put the
+  cursor at the end of the corresponding buffer.
+• Linter messages no longer include filename and line/column numbers.
+• Color name "grey" or "gray" can be used instead of "lightblack".
+• The color of the minibar can be chosen with 'set minicolor'.
+
+2021.04.29 - GNU nano 5.7 "Toți ceilalți arau câmpurile"
+• The output of --constantshow (without --minibar) is more stable.
+• When opening multiple buffers and there is an error message, this
+  message is shown again upon first switch to the relevant buffer.
+• The position and size of the indicator now follow actual lines,
+  instead of visual lines when in softwrap mode, meaning that the
+  size of the indicator can change when scrolling in softwrap mode.
+
+2021.03.03 - GNU nano 5.6.1 "Geelgors"
+• Search matches are properly colorized in softwrap mode too.
+• Option 'highlightcolor' has been renamed to 'spotlightcolor'.
+
+2021.02.24 - GNU nano 5.6 "Wielewaal"
+• A search match gets highlighted (in black on yellow by default),
+  in addition to placing the cursor at the start of the match.
+  The color combination can be changed with 'set highlightcolor'.
+  By default the cursor is hidden until the next keystroke, but
+  it can be forced on with --showcursor / 'set showcursor'.
+• Option --markmatch / 'set markmatch' has been removed.
+• Cursor position and character code are displayed in the minibar
+  only when option --constantshow / 'set constantshow' is used,
+  and their display can be toggled with M-C.
+• The state flags are displayed in the minibar only when option
+  --stateflags / 'set stateflags' is used.
+
+2021.01.14 - GNU nano 5.5 "Rebecca"
+• Option 'set minibar' makes nano suppress the title bar and instead
+  show a bar with basic editing information at the bottom: file name
+  (plus an asterisk when the buffer is modified), the cursor position
+  (line,column), the character under the cursor (U+xxxx), the flags
+  that --stateflags normally shows, plus the percentage of the buffer
+  that is above the cursor.
+• With 'set promptcolor' the color combination of the prompt bar can
+  be changed, to allow contrasting it with the mini bar (which always
+  has the same color as the title bar).
+• Option 'set markmatch' highlights the result of a successful search
+  by putting the mark at the end of the match, making the match more
+  visible.  It also suppresses the cursor until the next keystroke.
+  (If you dislike the hiding of the cursor, use 'set showcursor'.)
+• The bindable toggle 'nowrap' has been renamed to 'breaklonglines',
+  to match the corresponding option, like for all other toggles.
+• Support for Slang has been removed.
+
+2020.12.02 - GNU nano 5.4 "Terre des hommes"
+• Moving the cursor now skips over combining characters (and other
+  zero-width characters).  Deleting a character deletes also any
+  succeeding zero-width characters, but backspacing deletes just
+  one character at a time.
+• Workarounds for older ncurses and older libvtes were removed.
+
+2020.10.07 - GNU nano 5.3 "Revolution!"
+• Option 'set stateflags' makes nano show the state of auto-indenting,
+  the mark, hard-wrapping, macro recording, and soft-wrapping in the
+  title bar.  The flags take the place of "Modified", and a modified
+  buffer is instead indicated by an asterisk (*) after its name.
+• Nano no longer by default tries using libmagic to determine the type
+  of a file (when neither filename nor first line gave a clue), because
+  in most cases it is a waste of time.  It requires using the option
+  --magic or -! or 'set magic' to make nano try libmagic.
+• The color of the indicator can be changed with 'set scrollercolor'.
+
+2020.08.24 - GNU nano 5.2 "Ranrapalca"
+• Making certain replacements after a large paste does not crash.
+• Hitting a toggle at the Search prompt does not clear the answer.
+• Using --positionlog does not complain at the first start.
+• A macro containing a Search command will not sometimes fail.
+
+2020.08.12 - GNU nano 5.1 "Cantabria"
+• M-Bsp (Alt+Backspace) deletes a word backwards, like in Bash.
+• M-[ has become bindable.  (Be careful, though: as it is the
+  starting combination of many escape sequences, avoid gluing
+  it together with other keystrokes, like in a macro.)
+• With --indicator and --softwrap, the first keystroke in an
+  empty buffer does not crash.
+• Invoking the formatter while text is marked does not crash.
+• In UTF-8 locales, an anchor is shown as a diamond.
+
 2020.07.29 - GNU nano 5.0 "Among the fields of barley"
 • With --indicator (or -q or 'set indicator') nano will show a kind
   of scrollbar on the righthand side of the screen to indicate where
@@ -90,7 +210,7 @@
   It allows running a syntax-specific command on the contents of
   the buffer.
 • ^T will try to run 'hunspell' before 'spell', because it checks
-  spellling for the locale's language and understands UTF-8.
+  spelling for the locale's language and understands UTF-8.
 • Multiple errors or warnings on startup will no longer slow nano
   down but will be indicated on the status bar with trailing dots.
 
@@ -109,6 +229,7 @@
 
 2019.06.18 - GNU nano 4.3 "Musa Kart"
 • The ability to read from and write to a FIFO has been regained.
+• Opening a file no longer triggers an inotify CLOSE_WRITE event.
 • Startup time is reduced by fully parsing a syntax only when needed.
 • Asking for help (^G) when using --operatingdir does not crash.
 • The reading of a huge or slow file can be stopped with ^C.
@@ -513,7 +634,7 @@
 
 2016.02.12 - GNU nano 2.5.2 is carrying too many dogs.  This release
              includes several fixes for various memory leaks, position-
-             history size growth, and a long standing issue with using
+             history size growth, and a long-standing issue with using
              nano under sudo creating root-owned files.  There are also
              the usual bevy of documentation and other miscellaneous
              fixes and touchups.  Upgrade today while supplies last,
@@ -755,28 +876,27 @@
 
 2009.11.30 - GNU nano 2.2.0 "Doc Brown" is released!  The culmination
              of almost two years of development and hot on the heels
-             of nano's 10th birthday is available for all your
-             editing needs!  Bugs fixed since the last release
-             include several fixes for tiny mode (involving both
-             the help keys and replace menu text), more 'final'
-             fixes for soft wrapping, and several typo and documentation
-             updates including nanorc tweaks and a new syntax
-             highlighting file for makefiles.  Also included is a long
-             standing fix for random crashing when using nanorc on
-             FreeBSD, and nano will no longer clear the screen on
-             suspend to maintain compatibility with other *nix editors.
-             For those who haven't been playing along at home, please
-             see the official web page for the summary of new
-             features since 2.0.  Special thanks to all who have
-             submitted bug reports recently in support of our new
-             stable release, and apologies for all those bugs we
-             didn't yet find :-) Peace to all.
+             of nano's 10th birthday is available for all your editing
+             needs!  Bugs fixed since the last release include several
+             fixes for tiny mode (involving both the help keys and
+             replace menu text), more 'final' fixes for soft wrapping,
+             and several typo and documentation updates including nanorc
+             tweaks and a new syntax highlighting file for makefiles.
+             Also included is a long-standing fix for random crashing
+             when using nanorc on FreeBSD, and nano will no longer clear
+             the screen on suspend to maintain compatibility with other
+             *nix editors.  For those who haven't been playing along at
+             home, please see the official web page for the summary of
+             new features since 2.0.  Special thanks to all who have
+             submitted bug reports recently in support of our new stable
+             release, and apologies for all those bugs we didn't yet
+             find :-)  Peace to all.
 
 
 2009.11.21 - GNU nano 2.1.99pre2 is available for a special pre-Black
              Friday discount.  Included are some (hopefully final)
              fixes for issues with last page display caused by the
-             soft wrapping code, and a fix for a long standing issue
+             soft wrapping code, and a fix for a long-standing issue
              with hitting the Home key when going through the search
              history.  On the features front, nano will now attempt to
              retain the proper ownership and permissions when trying
@@ -904,31 +1024,31 @@
              and not saving the search history when compiled with
              configure options.
 
-2008.04.24 - GNU nano 2.1.2 "New York City" is released.  This release
-             contains fixes for binding bad keys, some
-             configure-specific compilation failures, and more issues
-             with the new input back end and in particular the status
-             bar.  Also fixed are some long standing issues with
-             compiling on AIX, and a segfault when making the terminal
-             window too small.  Rest in Peace Tim and George!
+2008.06.24 - GNU nano 2.1.2 "New York City" is released.  This
+             release contains fixes for binding bad keys, some
+             configure-specific compilation failures, and more
+             issues with the new input back end and in particular
+             the status bar.  Also fixed are some long-standing
+             issues with compiling on AIX, and a segfault when
+             making the terminal window too small.  Rest in Peace
+             Tim and George!
 
-2008.04.01 - GNU nano 2.1.1 won't get fooled again.  This release contains
-             fixes for the new user-rebindable keys (in particular
-             bracket match which was mis-bound), and various
-             problems with translations and configure-related
-             compilation problems are now fixed as well.
-             It also contains new syntax highlighting
-             definitions for TCL, PHP, Gentoo and Debian-related
-             files, and some documentation updates as well.
-             Please continue to send reports with the key
-             binding code to the Savannah page
-             (https://savannah.gnu.org/bugs/?group=nano).
+2008.04.01 - GNU nano 2.1.1 won't get fooled again.  This release
+             contains fixes for the new user-rebindable keys (in
+             particular bracket match which was mis-bound), and
+             various problems with translations and configure-
+             related compilation problems are now fixed as well.
+             It also contains new syntax highlighting definitions
+             for Tcl, PHP, Gentoo and Debian-related files, and
+             some documentation updates as well.  Please continue to
+             send reports with the key binding code to the Savannah
+             page (https://savannah.gnu.org/bugs/?group=nano).
 
 2008.03.18 - GNU nano 2.1.0 "under old mismanagement" is released.
              This first release in the 2.1 development series
              introduces rebindable keys for most actions inside
-             the editor.  Please see the nanorc(5) page for
-             more information on configuring key bindings.  Please
+             the editor.  Please see the nanorc(5) page for more
+             information on configuring key bindings.  Please
              also report all keybinding bugs (crashes, missing
              menu functions) using the Savannah bug tracker URL,
              https://savannah.gnu.org/bugs/?group=nano and
@@ -1089,7 +1209,7 @@
 
 2005.12.23 - GNU nano 1.3.10 rises to the surface.  This release
              contains several new features as well as fixes for
-             several longstanding bugs.  The former include the
+             several long-standing bugs.  The former include the
              ability to scroll up or down single lines without
              scrolling the cursor, reworked bracket searching code
              that doesn't require regular expression support,
@@ -1126,9 +1246,9 @@
              Have fun with it.
 
 2005.06.30 - GNU nano 1.3.8 floats at its own level.  This release
-             contains several new features.  Among other things, you
-             can now move to a specified column number as well as
-             line number within a file, file backups saved in a
+             contains several new features.  Among other things,
+             you can now move to a specified column number as well
+             as line number within a file, file backups saved in a
              backup directory will have unique names, the search and
              replace history routines should work more consistently,
              you can get a word count by pressing Meta-D at the edit
@@ -1139,8 +1259,8 @@
              screen updates, UTF-8 display, and flow control; a fix
              for a segfault when displaying some lines ending with
              tabs; better handling of constant cursor position
-             display; improved color parsing in the rcfile; and
-             support for the "Regexp" toggle in tiny mode
+             display; improved color parsing in the rcfile;
+             and support for the "Regexp" toggle in tiny mode
              (-R/--regexp is gone, and --restricted's short option
              has been changed to -R), among other things.  Enjoy.
 
@@ -1311,38 +1431,37 @@
              and enjoy GNU nano 1.2.0.
 
 
-2003.02.13 - GNU nano 1.1.99pre3 "The last testing version, no
-             really!" is released.  This release includes fixes for
-             wrapping (again), resizing, color syntax highlighting,
-             rcfile parsing, the mouse code, more memory leaks, and
-             some reversion of the code to get the user's home
-             directory (nano will now again rely on $HOME).  There
-             are also translation updates, a new manual page for the
-             nanorc file, and an UPGRADE file detailing the changes
-             since version 1.0.  Please submit reports for any bugs
-             you might find to the development team
-             (nano-devel@gnu.org), and enjoy nano almost-1.2.0 ;-)
+2003.02.13 - GNU nano 1.1.99pre3 "The last testing version, no really!"
+             is released.  This release includes fixes for wrapping
+             (again), resizing, color syntax highlighting, rcfile
+             parsing, the mouse code, more memory leaks, and some
+             reversion of the code to get the user's home directory
+             (nano will now again rely on $HOME).  There are also
+             translation updates, a new manual page for the nanorc
+             file, and an UPGRADE file detailing the changes since
+             version 1.0.  Please submit reports for any bugs you
+             might find to the development team (nano-devel@gnu.org),
+             and enjoy nano almost-1.2.0 ;-)
 
-2003.02.03 - GNU nano 1.1.99pre2 "bugs in my pockets, bugs in my
-             shoes" is released.  There are, not surprisingly, only
-             bugfixes in this release as we move toward the stable
-             1.2.0 release.  Fixes are included for translatable
-             string format, subexpression replacement, constant
-             cursor position, invalid search regexes, justify, screen
-             state on SIGHUP and SIGTERM, cutting to end cuts with
-             long lines, many file browser and operating directory
-             bugs, memory and file descriptor leaks, marker code,
-             spell checker, the mouse code with long lines, multiple
-             buffers and non-file open errors, replacement string
-             length, and a silly but serious history message crash.
-             There is also a drastic improvement in CPU utilization
-             for the color regex code.
-                 Depending on the number of bugs found in this
-             release, there may be a 1.1.99pre3 or RC1, or just a
-             1.2.0 release.  Most of the major bugs seem to have been
-             worked out, so if you are waiting for a good time to
-             test nano before the official 1.2.0 release, this would
-             be the one to use.  Happy bug hunting!
+2003.02.03 - GNU nano 1.1.99pre2 "bugs in my pockets, bugs in my shoes"
+             is released.  There are, not surprisingly, only bugfixes
+             in this release as we move toward the stable 1.2.0
+             release.  Fixes are included for translatable string
+             format, subexpression replacement, constant cursor
+             position, invalid search regexes, justify, screen state on
+             SIGHUP and SIGTERM, cutting to end cuts with long lines,
+             many file browser and operating directory bugs, memory and
+             file descriptor leaks, marker code, spell checker, the
+             mouse code with long lines, multiple buffers and non-file
+             open errors, replacement string length, and a silly but
+             serious history message crash.  There is also a drastic
+             improvement in CPU utilization for the color regex code.
+                 Depending on the number of bugs found in this release,
+             there may be a 1.1.99pre3 or RC1, or just a 1.2.0 release.
+             Most of the major bugs seem to have been worked out, so if
+             you are waiting for a good time to test nano before the
+             official 1.2.0 release, this would be the one to use.
+             Happy bug hunting!
 
 2003.01.17 - GNU nano 1.1.99pre1 "enough already" has been released.
              This release is, barring bug fixes and documentation
@@ -1403,19 +1522,19 @@
              word and next word, nanorc parser and line wrapping
              code.  Have fun!
 
-2002.07.25 - At long last!  GNU nano 1.1.10 "What didn't we break?" is
-             released.  This version of GNU nano features version
+2002.07.25 - At long last!  GNU nano 1.1.10 "What didn't we break?"
+             is released.  This version of GNU nano features version
              0.11.2 of gettext, building with automake 1.6, some new
              code for displaying control characters, browser
-             improvements, a new backup file option (-B, --backup), a
-             new option to ignore rc files (-I, --ignorercfiles),
+             improvements, a new backup file option (-B, --backup),
+             a new option to ignore rc files (-I, --ignorercfiles),
              compatibility with -pedantic, handling null characters
              before EOF, a slightly sportier nanorc.sample and more.
-                 Fixes are included for justification,
-             the reading and writing file routines, resizing and fill
-             length, millions of memory leaks, the usage screen was
-             updated, and the --quotestr and --regexp really work
-             now ;-)  Enjoy :)
+                 Fixes are included for justification, the reading
+             and writing file routines, resizing and fill length,
+             millions of memory leaks, the usage screen was updated,
+             and the --quotestr and --regexp really work now ;-)
+             Enjoy :)
 
 2002.05.12 - GNU nano 1.1.9 is released, happy Mother's Day!  This
              release includes many new features, including a prepend
@@ -1685,27 +1804,26 @@
 
 2000.11.23 - Happy Thanksgiving!  Nano 0.9.21 is our "last version was
              a big turkey" release.  It fixes several bugs introduced
-             by the previous version, as well as a few long- standing
+             by the previous version, as well as a few long-standing
              display bugs.  All 0.9.20 users are strongly encouraged
              to upgrade to this release.
 
 2000.11.18 - Nano 0.9.20 is finally out the door.  Probably the biggest
-             change is the brand new way nano displays previous
-             search and replace strings (they are now editable!)
-             This is a break from Pico's (inconsistent) interface, so
-             if you don't like the new way, "Pico" mode (-p on the
-             command line or Meta-P within nano) still works the
-             "old" way.
+             change is the brand new way nano displays previous search
+             and replace strings (they are now editable!)  This is a
+             break from Pico's (inconsistent) interface, so if you
+             don't like the new way, "Pico" mode (-p on the command
+             line or Meta-P within nano) still works the "old" way.
                  Other new features include being able to deal with
-             search strings of any length, a new internal spell
-             feature (courtesy of Mr. Rocco Corsi) and tab completion
-             when reading in or writing out files!  There's also the
-             usual billion or so bug fixes.  Feedback on this release
-             is welcome because so much has changed, especially with
-             the previous string display in search and replace.
-             Email -> nano@nano-editor.org <-.  If you like
-             something, don't like something, or just want to order a
-             pizza, let us know!
+             search strings of any length, a new internal spell feature
+             (courtesy of Mr. Rocco Corsi) and tab completion when
+             reading in or writing out files!  There's also the usual
+             billion or so bug fixes.  Feedback on this release is
+             welcome because so much has changed, especially with the
+             previous string display in search and replace.  Email
+             -> nano@nano-editor.org <-.  If you like something,
+             don't like something, or just want to order a pizza,
+             let us know!
 
 2000.10.02 - Nano 0.9.19 is the "Chris is getting married in less than
              a week and needs a distraction" release.  There are only
@@ -1906,19 +2024,19 @@
              it is yours to take care of and keep up to date.
 
 2000.03.01 - Well, to continue my trend of going back on my previous
-             release's comments, nano 0.8.7 is released.  The
-             crashing behavior was still occurring, and this most
-             recent fix also fixes some other wrapping problems, so
-             here you go.  There may be another release soon, there
-             may not be, is that vague enough? =)
+             release's comments, nano 0.8.7 is released.  The crashing
+             behavior was still occurring, and this most recent fix
+             also fixes some other wrapping problems, so here you go.
+             There may be another release soon, there may not be, is
+             that vague enough? =)
 
 2000.02.25 - More minor bugfixes in 0.8.6, the bizarre behavior at the
              end of a page has ceased, thankfully.  I'm also moving
              next weekend, so don't be shocked if you don't see a new
              version of nano next week  =-)
 
-2000.02.11 - Okay, here we go again.  Aside from a few minor fixes and
-             some under-the-hood changes, you won't notice much
+2000.02.11 - Okay, here we go again.  Aside from a few minor fixes
+             and some under-the-hood changes, you won't notice much
              different in this version of nano.  I haven't gotten
              much feedback on the help feature, is it simply amazing
              or does no one care?  Write and let me know! =)
@@ -1933,23 +2051,22 @@
              address nano@asty.org for bugs, etc.
 
 2000.02.02 - Okay, I hate to go back on what I said in the last release,
-             but I may be changing jobs very soon.  I will release
-             version 0.8.2 as is (no i18n, no help menu (yet)).  I
-             expect things to settle down by the end of next week,
-             and then I can try to start on the i18n support and help
-             menu; look for these new features in version 0.8.5 to
-             0.9.0.
+             but I may be changing jobs very soon.  I will release version
+             0.8.2 as is (no i18n, no help menu (yet)).  I expect things
+             to settle down by the end of next week, and then I can try to
+             start on the i18n support and help menu; look for these new
+             features in version 0.8.5 to 0.9.0.
 
 2000.01.28 - Nano 0.8.1 marks our first official step toward
-             internationalization (i18n) and the help system (^G).  I
-             will be merging in Jordi's patches for initial i18n in
-             the next version, and will implement the help system
+             internationalization (i18n) and the help system (^G).
+             I will be merging in Jordi's patches for initial i18n
+             in the next version, and will implement the help system
              with i18n built into it shortly after that.  Please
              don't hesitate to send bug reports, as long as you're
              sure the fault lies with nano =-).
 
-2000.01.25 - Nano 0.8.0 is officially the 'let's try and be at least a
-             little portable, mmmmkay?' release.  There are many
+2000.01.25 - Nano 0.8.0 is officially the "let's try and be at least
+             a little portable, mmmmkay?" release.  There are many
              portability checks and fixes; many thanks to Andy Kahn
              for his patches.  I removed the broken do_spell behavior
              with the 'spell' program; for now, we only try to call
@@ -1959,31 +2076,29 @@
 2000.01.24 - Nano 0.7.9 features many new features.  Among them are a
              new autoindent feature (-i, --autoindent), tempfile flag
              like Pico's -t flag (-t, --tempfile), and preliminary
-             spelling program support.  The spelling function tries
-             to run 'spell' and then 'ispell' in that order, but you
-             can specify another spelling program with -s or
-             --speller.
+             spelling program support.  The spelling function tries to
+             run 'spell' and then 'ispell' in that order, but you can
+             specify another spelling program with -s or --speller.
 
-2000.01.17 - Nano 0.7.7 is officially the 'way too much stuff changed this
-             release' release.  It's the busy time at work for me, so
-             please don't get offended if your patch doesn't get
-             included in the next immediate version of nano.  I'm
-             sure all the changes in this release will cause a few
-             bugs, so 0.7.8 will primarily be about fixing those
-             bugs.
+2000.01.17 - Nano 0.7.7 is officially the "way too much stuff changed
+             this release" release.  It's the busy time at work for me,
+             so please don't get offended if your patch doesn't get
+             included in the next immediate version of nano.  I'm sure
+             all the changes in this release will cause a few bugs, so
+             0.7.8 will primarily be about fixing those bugs.
 
              Things added this release include resizability (kinda),
              new -x and -c flags (see nano -h for help), long command
              line flag support, and the usual array of bugfixes.
 
-2000.01.15 - Nano 0.7.6 is officially the 'lightning' release.  It now
-             loads large files much faster than previous versions,
-             and is even much faster than Pico or vi in some rather
-             rudimentary tests.  Many thanks to Adam Rogoyski for the
-             read_byte patch!
+2000.01.15 - Nano 0.7.6 is officially the "lightning" release.
+             It now loads large files much faster than previous
+             versions, and is even much faster than Pico or vi
+             in some rather rudimentary tests.  Many thanks to
+             Adam Rogoyski for the read_byte patch!
 
-2000.01.09 - As of this version (0.7.4), TIP has officially been renamed
-             to nano.  The new homepage is at
-             http://faculty.plattsburgh.edu/astyanax/nano.  Please
-             update your bookmarks, tell your friends, and all that
-             jazz.
+2000.01.09 - As of this version (0.7.4), TIP has officially
+             been renamed to nano.  The new homepage is at
+             http://faculty.plattsburgh.edu/astyanax/nano.
+             Please update your bookmarks, tell your friends,
+             and all that jazz.

README

@@ -1,10 +1,42 @@
 
           GNU nano -- a simple editor, inspired by Pico
 
-Overview
+Purpose
 
-    The nano project was started because of a few "problems" with the
-    wonderfully easy-to-use and friendly Pico text editor.
+    Nano is a small and simple text editor for use on the terminal.
+    It copied the interface and key bindings of the Pico editor but
+    added several missing features: undo/redo, syntax highlighting,
+    line numbers, softwrapping, multiple buffers, selecting text by
+    holding Shift, search-and-replace with regular expressions, and
+    several other conveniences.
+
+Appearance
+
+    In rough ASCII graphics, this is what nano's screen looks like:
+
+   ____________________________________________________________________
+  |  GNU nano 6.0                  filename                  Modified  |
+   --------------------------------------------------------------------
+  | This is the text window, displaying the contents of a 'buffer',    |
+  | the contents of the file you are editing.                          |
+  |                                                                    |
+  | The top row of the screen is the 'title bar'; it shows nano's      |
+  | version, the name of the file, and whether you modified it.        |
+  | The two bottom rows display the most important shortcuts; in       |
+  | those lines ^ means Ctrl.  The third row from the bottom shows     |
+  | some feedback message, or gets replaced with a prompt bar when     |
+  | you tell nano to do something that requires extra input.           |
+  |                                                                    |
+   --------------------------------------------------------------------
+  |                       [ Some status message ]                      |
+  |^G Help       ^O Write Out  ^W Where Is   ^K Cut        ^T Execute  |
+  |^X Exit       ^R Read File  ^\ Replace    ^U Paste      ^J Justify  |
+   --------------------------------------------------------------------
+
+Origin
+
+    The nano project was started in 1999 because of a few "problems"
+    with the wonderfully easy-to-use and friendly Pico text editor.
 
     First and foremost was its license: the Pine suite does not use
     the GPL, and (before using the Apache License) it had unclear
@@ -23,9 +55,22 @@ Overview
     The nano editor is an official GNU package.  For more information on
     GNU and the Free Software Foundation, please see https://www.gnu.org/.
 
+License
+
+    Nano's code and documentation are covered by the GPL version 3 or
+    (at your option) any later version, except for two functions that
+    were copied from busybox which are under a BSD license.  Nano's
+    documentation is additionally covered by the GNU Free Documentation
+    License version 1.2 or (at your option) any later version.  See the
+    files COPYING and COPYING.DOC for the full text of these licenses.
+
+    When in any file of this package a copyright notice mentions a
+    year range (such as 1999-2011), it is a shorthand for a list of
+    all the years in that interval.
+
 How to compile and install nano
 
-    Download the latest nano source tarball, then:
+    Download the latest nano source tarball, and then:
 
         tar -xvf nano-x.y.tar.gz
         cd nano-x.y
@@ -33,12 +78,13 @@ How to compile and install nano
         make
         make install
 
-    It's that simple.  Use --prefix with configure to override the
-    default installation directory of /usr/local.
+    You will need the header files of ncurses installed for ./configure
+    to succeed -- get them from libncurses-dev (Debian) or ncurses-devel
+    (Fedora) or a similarly named package.  Use --prefix with ./configure
+    to override the default installation directory of /usr/local.
 
-    If you haven't configured with the --disable-nanorc option, after
-    installation you may want to copy the doc/sample.nanorc file to
-    your home directory, rename it to ".nanorc", and then edit it
+    After installation you may want to copy the doc/sample.nanorc file
+    to your home directory, rename it to ".nanorc", and then edit it
     according to your taste.
 
 Web Page
@@ -49,31 +95,28 @@ Mailing Lists
 
     There are three nano-related mailing-lists.
 
-    + info-nano@gnu.org is a very low traffic list used to announce
+    * <info-nano@gnu.org> is a very low traffic list used to announce
       new nano versions or other important info about the project.
-    + help-nano@gnu.org is for those seeking to get help without
+
+    * <help-nano@gnu.org> is for those seeking to get help without
       wanting to hear about the technical details of its development.
-    + nano-devel@gnu.org is the list used by the people that make nano
+
+    * <nano-devel@gnu.org> is the list used by the people that make nano
       and a general development discussion list, with moderate traffic.
 
     To subscribe, send email to <name>-request@gnu.org with a subject
     of "subscribe", where <name> is the list you want to subscribe to.
 
+    The archives of the development and help mailing lists are here:
+
+        https://lists.gnu.org/archive/html/nano-devel/
+        https://lists.gnu.org/archive/html/help-nano/
+
 Bug Reports
 
-    To report a bug, please file a description of the problem on nano's
-    bug tracker (https://savannah.gnu.org/bugs/?group=nano -- hover on
-    "Bugs", then click "Submit new").  The issue may have already been
-    reported, so please look first.
+    If you find a bug, please file a detailed description of the problem
+    on nano's issue tracker: https://savannah.gnu.org/bugs/?group=nano
+    (you will need an account to be able to do so), or send an email
+    to the nano-devel list (no need to subscribe, but mention it if
+    you want to be CC'ed on an answer).
 
-Current Status
-
-    Since version 2.5.0, GNU nano has abandoned the distinction between
-    a stable and a development branch: it is now on a "rolling" release
-    -- fixing bugs and adding new features go hand in hand.
-
-Copyright Years
-
-    When in any file of this package a copyright notice mentions a
-    year range (such as 1999-2011), it is a shorthand for a list of
-    all the years in that interval.

README.GIT

@@ -22,11 +22,11 @@ packages:
 - pkg-config  (version >= 0.22)
 - texinfo     (version >= 4.0)
 
-If you want UTF-8 support, you will also need libncursesw5-dev installed
-(version >= 5.7), or libslang2-dev (version >= 2.0) if you use --with-slang.
+You will also need to have the header files for ncurses installed,
+from libncurses-dev on Debian, ncurses-devel on Fedora, or similar.
 
-These should all be available in your distro's package manager or software
-center, or otherwise on any GNU mirror.
+These should all be available in your distro's package manager or
+software center, or otherwise on any GNU mirror.
 
 
 Download the source
@@ -84,7 +84,6 @@ Problems?
 Please submit any bugs you find in the code in git via the bug tracker
 on Savannah (https://savannah.gnu.org/bugs/?group=nano).
 
-
 Contributing something
 ----------------------
 
@@ -114,3 +113,11 @@ to include 'set tabsize 4', or you could use -T4 on the command line.
 To make git display things as intended, you can do:
 
     $ git config --local core.pager "less -x1,5"
+
+To see all types that are used in nano's source code colorized as types,
+you can add these lines to your ~/.nanorc:
+
+    extendsyntax c color green "\<struct (dirent|option|passwd)\>"
+    extendsyntax c color green "\<struct (sigaction|stat|termios)\>"
+    extendsyntax c color green "\<struct (timespec|vt_stat|winsize)\>"
+    extendsyntax c color green "\<([[:lower:]_]+(struct|type)|va_list)\>"

THANKS

@@ -18,6 +18,8 @@ Mihai Cristescu <mihai.cristescu@archlinux.info>      Romanian
 Yavor Doganov <yavor@doganov.org>                     Bulgarian
 Karl Eichwalder <keichwa@gmx.net>                     German
 A. Murat EREN <meren@comu.edu.tr>                     Turkish
+Sveinn í Felli <sv1@fellsnet.is>                      Icelandic
+Marek Felšöci <marek@felsoci.sk>                      Slovak
 Doruk Fisek <dfisek@fisek.com.tr>                     Turkish
 Rafael Fontenelle <rffontenelle@gmail.com>            Brazilian Portuguese
 Pavel Fric <pavelfric@seznam.cz>                      Czech
@@ -73,6 +75,7 @@ Johnny A. Solbu <johnny@solbu.net>                    Norwegian Bokmål
 Pierre Tane <tanep@bigfoot.com>                       French
 Yasuaki Taniguchi <yasuakit@gmail.com>                Japanese
 Jacobo Tarrío <jtarrio@trasno.net>                    Galician
+Andika Triwidada <andika@gmail.com>                   Indonesian
 Francisco Javier Tsao Santín <tsao@members.fsf.org>   Galician
 Balázs Úr <urbalazs@gmail.com>                        Hungarian
 Miquel Vidal <miquel@sindominio.net>                  Catalan

autogen.sh

@@ -2,7 +2,7 @@
 # Generate configure & friends for GIT users.
 
 gnulib_url="git://git.sv.gnu.org/gnulib.git"
-gnulib_hash="ac34618e85013bfec4650f02e8e79c5de6d80fb3"
+gnulib_hash="135414a7f543e4d40ad0a7cbd51885e159a6e0f4"
 
 modules="
 	futimens
@@ -13,6 +13,7 @@ modules="
 	isblank
 	iswblank
 	lstat
+	mkstemps
 	nl_langinfo
 	regex
 	sigaction

configure.ac

@@ -1,6 +1,6 @@
 # Configuration for GNU nano - a small and user-friendly text editor
 #
-# Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.
+# Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.
 # Copyright (C) 2014, 2017 Mike Frysinger
 #
 # GNU nano is free software: you can redistribute it and/or modify
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see https://www.gnu.org/licenses/.
 
-AC_INIT([GNU nano], [5.0], [nano-devel@gnu.org], [nano])
+AC_INIT([GNU nano], [6.0], [nano-devel@gnu.org], [nano])
 AC_CONFIG_SRCDIR([src/nano.c])
 AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE([1.14])
@@ -36,12 +36,12 @@ gl_cv_glob_lists_symlinks=yes
 
 dnl Checks for programs.
 
-AC_GNU_SOURCE
+AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CC
 gl_EARLY
 gl_INIT
 AC_PROG_LN_S
-AC_ISC_POSIX
+AC_SEARCH_LIBS([strerror], [cposix])
 AC_SYS_LARGEFILE
 PKG_PROG_PKG_CONFIG
 
@@ -59,7 +59,7 @@ AC_DEFINE_DIR([PKGDATADIR], [pkgdatadir], [Where data are placed to.])
 dnl Whether this is a git repository.
 
 AC_MSG_CHECKING([whether building from git])
-if test -f roll-a-release.sh ; then
+if test -f "$srcdir/roll-a-release.sh" ; then
 	AC_MSG_RESULT([yes])
 	from_git=yes
 else
@@ -73,14 +73,14 @@ dnl Checks for pkg-config and gettext when building from git.
 if test x$from_git = xyes; then
 	if test ! -f $(aclocal --print-ac-dir)/pkg.m4; then
 		AC_MSG_ERROR([
-  *** The pkg.m4 macros are missing. ***
-  *** The pkg-config package needs to be installed when building from git. ***
-  *** After fixing this problem, rerun ./autogen.sh. ***])
+  *** The pkg.m4 macros are missing.
+  *** The pkg-config package needs to be installed when building from git.
+  *** After fixing this problem, rerun ./autogen.sh.])
 	fi
 	if test "$ac_cv_path_MSGFMT" = ":"; then
 		AC_MSG_ERROR([
-  *** The msgfmt program is missing. ***
-  *** The gettext package needs to be installed when building from git. ***])
+  *** The msgfmt program is missing.
+  *** The gettext package needs to be installed when building from git.])
 	fi
 fi
 
@@ -90,12 +90,6 @@ AC_CHECK_HEADERS(libintl.h limits.h pwd.h termios.h sys/param.h)
 
 dnl Checks for options.
 
-if test "x$with_slang" = xyes; then
-	if test "x$enable_tiny" != xyes; then
-		AC_MSG_ERROR([--with-slang is supported only together with --enable-tiny])
-	fi
-fi
-
 AC_ARG_ENABLE(browser,
 AS_HELP_STRING([--disable-browser], [Disable the built-in file browser]))
 if test "x$enable_tiny" = xyes; then
@@ -112,7 +106,8 @@ AS_HELP_STRING([--disable-color], [Disable color and syntax highlighting]))
 if test "x$enable_tiny" = xyes; then
 	if test "x$enable_color" = xyes; then
 		if test "x$enable_nanorc" != xyes; then
-			AC_MSG_ERROR([--enable-color needs --enable-nanorc to work])
+			AC_MSG_ERROR([
+  ***  --enable-color needs --enable-nanorc to work])
 		fi
 	else
 		enable_color=no
@@ -120,7 +115,8 @@ if test "x$enable_tiny" = xyes; then
 fi
 if test "x$enable_nanorc" = xno; then
 	if test "x$enable_color" = xyes; then
-		AC_MSG_ERROR([--enable-color cannot work with --disable-nanorc])
+		AC_MSG_ERROR([
+  ***  --enable-color cannot work with --disable-nanorc])
 	else
 		# Disabling nanorc silently disables color support.
 		enable_color=no
@@ -135,7 +131,8 @@ AC_ARG_ENABLE(comment,
 AS_HELP_STRING([--disable-comment], [Disable the comment/uncomment function]))
 if test "x$enable_tiny" = xyes; then
 	if test "x$enable_comment" = xyes; then
-		AC_MSG_ERROR([--enable-comment cannot work with --enable-tiny])
+		AC_MSG_ERROR([
+  ***  --enable-comment cannot work with --enable-tiny])
 	else
 		enable_comment=no
 	fi
@@ -160,7 +157,8 @@ AS_HELP_STRING([--disable-help], [Disable the built-in help texts]))
 if test "x$enable_tiny" = xyes; then
 	if test "x$enable_help" = xyes; then
 		if test "x$enable_multibuffer" != xyes; then
-			AC_MSG_ERROR([--enable-help needs --enable-multibuffer to work])
+			AC_MSG_ERROR([
+  ***  --enable-help needs --enable-multibuffer to work])
 		fi
 	else
 		enable_help=no
@@ -168,7 +166,8 @@ if test "x$enable_tiny" = xyes; then
 fi
 if test "x$enable_multibuffer" = xno; then
 	if test "x$enable_help" = xyes; then
-		AC_MSG_ERROR([--enable-help cannot work with --disable-multibuffer])
+		AC_MSG_ERROR([
+  ***  --enable-help cannot work with --disable-multibuffer])
 	else
 		# Disabling multibuffer silently disables the help texts.
 		enable_help=no
@@ -202,6 +201,18 @@ fi
 
 AC_ARG_ENABLE(libmagic,
 AS_HELP_STRING([--disable-libmagic], [Disable detection of file types via libmagic]))
+if test "x$enable_libmagic" = xyes; then
+	if test "x$enable_tiny" = xyes; then
+		if test "x$enable_color" != xyes; then
+			AC_MSG_ERROR([
+  ***  --enable-libmagic needs --enable-color and --enable-nanorc to work])
+		fi
+	fi
+	if test "x$enable_color" = xno; then
+		AC_MSG_ERROR([
+  ***  --enable-libmagic cannot work with --disable-color nor --disable-nanorc])
+	fi
+fi
 
 AC_ARG_ENABLE(linenumbers,
 AS_HELP_STRING([--disable-linenumbers], [Disable line numbering]))
@@ -285,7 +296,8 @@ AC_ARG_ENABLE(wordcomp,
 AS_HELP_STRING([--disable-wordcomp], [Disable the word-completion function]))
 if test "x$enable_tiny" = xyes; then
 	if test "x$enable_wordcomp" = xyes; then
-		AC_MSG_ERROR([--enable-wordcomp cannot work with --enable-tiny])
+		AC_MSG_ERROR([
+  ***  --enable-wordcomp cannot work with --enable-tiny])
 	else
 		enable_wordcomp=no
 	fi
@@ -335,209 +347,16 @@ AS_HELP_STRING([--enable-altrcname], [Specify an alternate rcfile name (default:
 	AC_DEFINE_UNQUOTED(RCFILE_NAME, "$enableval", [Specify an alternate rcfile name (default: .nanorc).]) rcfilename=$enableval
 fi])
 
-
-AC_MSG_CHECKING([whether to use slang])
-CURSES_LIB_NAME=""
-AC_ARG_WITH(slang,
-AS_HELP_STRING([--with-slang[=DIR]], [Use the slang library instead of curses]),
-[    case "$with_slang" in
-	no)
-		AC_MSG_RESULT(no)
-		;;
-	*)
-		AC_MSG_RESULT(yes)
-
-		if test x$with_slang != xyes; then
-			# Add additional search path.
-			LDFLAGS="-L$with_slang/lib $LDFLAGS"
-			CPPFLAGS="-I$with_slang/include $CPPFLAGS"
-		fi
-
-		if test "x$enable_utf8" != xno; then
-			AC_CHECK_HEADER(slcurses.h,
-				AC_MSG_CHECKING([for SLutf8_enable in -lslang])
-				_libs=$LIBS
-				LIBS="$LIBS -lslang"
-				AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLutf8_enable(1);
-	return 0;
-}],
-					[AC_MSG_RESULT(yes)
-					AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-					CURSES_LIB_WIDE=yes
-					if test x$with_slang != xyes; then
-						CURSES_LIB="-L${with_slang}/lib -lslang"
-					else
-						CURSES_LIB="-lslang"
-					fi
-					CURSES_LIB_NAME=slang],
-					[AC_MSG_RESULT(no)
-
-					# We might need the term library.
-					for termlib in ncurses curses termcap terminfo termlib; do
-						AC_CHECK_LIB([${termlib}], tputs, [tcap="-l$termlib"])
-						test -n "$tcap" && break
-					done
-
-					AC_MSG_CHECKING([for SLutf8_enable in -lslang $tcap])
-					LIBS="$LIBS $tcap"
-					AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLutf8_enable(1);
-	return 0;
-}],
-						[AC_MSG_RESULT(yes)
-						AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-						CURSES_LIB_WIDE=yes
-						if test x$with_slang != xyes; then
-							CURSES_LIB="-L${with_slang}/lib -lslang $tcap"
-						else
-							CURSES_LIB="-lslang $tcap"
-						fi
-						CURSES_LIB_NAME=slang],
-						[AC_MSG_RESULT(no)
-
-						# We might need the math library.
-						AC_MSG_CHECKING([for SLutf8_enable in -lslang $tcap -lm])
-						LIBS="$LIBS -lm"
-						AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLutf8_enable(1);
-	return 0;
-}],
-							[AC_MSG_RESULT(yes)
-							AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-							CURSES_LIB_WIDE=yes
-							if test x$with_slang != xyes; then
-								CURSES_LIB="-L${with_slang}/lib -lslang $tcap -lm"
-							else
-								CURSES_LIB="-lslang $tcap -lm"
-							fi
-							CURSES_LIB_NAME=slang],
-							[AC_MSG_RESULT(no)],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling]))],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling]))],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling])),
-			AC_MSG_ERROR([
-  *** The header file slcurses.h was not found.  This header file
-  *** is required if you wish to use Slang support.  Please either
-  *** install a version of Slang that includes the slcurses.h file
-  *** or do not call the configure script with --with-slang.]))
-		fi
-
-		if eval "test x$CURSES_LIB_NAME = x"; then
-			# Reset libs if the above slang tests failed.
-			if test "x$enable_utf8" != xno; then
-				LIBS=$_libs
-			fi
-
-			AC_CHECK_HEADER(slcurses.h,
-				AC_MSG_CHECKING([for SLtt_initialize in -lslang])
-				_libs=$LIBS
-				LIBS="$LIBS -lslang"
-				AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLtt_initialize(NULL);
-	return 0;
-}],
-					[AC_MSG_RESULT(yes)
-					AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-					if test x$with_slang != xyes; then
-						CURSES_LIB="-L${with_slang}/lib -lslang"
-					else
-						CURSES_LIB="-lslang"
-					fi
-					CURSES_LIB_NAME=slang],
-					[AC_MSG_RESULT(no)
-
-					# We might need the term library.
-					for termlib in ncurses curses termcap terminfo termlib; do
-						AC_CHECK_LIB([${termlib}], tputs, [tcap="-l$termlib"])
-						test -n "$tcap" && break
-					done
-
-					AC_MSG_CHECKING([for SLtt_initialize in -lslang $tcap])
-					LIBS="$LIBS $tcap"
-					AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLtt_initialize(NULL);
-	return 0;
-}],
-						[AC_MSG_RESULT(yes)
-						AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-						if test x$with_slang != xyes; then
-							CURSES_LIB="-L${with_slang}/lib -lslang $tcap"
-						else
-							CURSES_LIB="-lslang $tcap"
-						fi
-						CURSES_LIB_NAME=slang],
-						[AC_MSG_RESULT(no)
-
-						# We might need the math library.
-						AC_MSG_CHECKING([for SLtt_initialize in -lslang $tcap -lm])
-						LIBS="$LIBS -lm"
-						AC_TRY_RUN([
-#include <slcurses.h>
-int main(void)
-{
-	SLtt_initialize(NULL);
-	return 0;
-}],
-							[AC_MSG_RESULT(yes)
-							AC_DEFINE(USE_SLANG, 1, [Define this to use the slang wrappers for curses instead of native curses.])
-							if test x$with_slang != xyes; then
-								CURSES_LIB="-L${with_slang}/lib -lslang $tcap -lm"
-							else
-								CURSES_LIB="-lslang $tcap -lm"
-							fi
-							CURSES_LIB_NAME=slang],
-							[AC_MSG_RESULT(no)],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling]))],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling]))],
-	AC_MSG_WARN([*** Can not use slang when cross-compiling])),
-			AC_MSG_ERROR([
-  *** The header file slcurses.h was not found.  This header file
-  *** is required if you wish to use Slang support.  Please either
-  *** install a version of Slang that includes the slcurses.h file
-  *** or do not call the configure script with --with-slang.]))
-		fi
-
-		if test "${_libs+set}" = "set"; then
-			LIBS=$_libs
-		fi
-
-		if test x$with_slang != xyes; then
-			LDFLAGS=${_ldflags}
-		fi
-		;;
-	esac], [AC_MSG_RESULT(no)])
-
 dnl Checks for functions.
 
 if test "x$enable_utf8" != xno; then
-	AC_CHECK_FUNCS(iswalnum iswpunct mblen mbstowcs mbtowc wctomb)
+	AC_CHECK_FUNCS(iswalpha iswalnum iswpunct mbstowcs wctomb)
 fi
-dnl Checks for typedefs, structures, and compiler characteristics.
 
 dnl Checks for available flags.
 
 AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"], [], [])
 
-dnl Checks for library functions.
-
-AC_TYPE_SIGNAL
-
 dnl Checks for libraries.
 
 if eval "test x$CURSES_LIB_NAME = x"; then
@@ -567,9 +386,9 @@ if eval "test x$CURSES_LIB_NAME = x"; then
 			CURSES_LIB=`$NCURSESW_CONFIG --libs`
 			LIBS="$CURSES_LIB $LIBS"
 			CPPFLAGS="`$NCURSESW_CONFIG --cflags` $CPPFLAGS"
-			AC_CHECK_LIB(ncursesw, get_wch, [CURSES_LIB_NAME=ncursesw CURSES_LIB_WIDE=yes])
+			AC_CHECK_LIB(ncursesw, wget_wch, [CURSES_LIB_NAME=ncursesw CURSES_LIB_WIDE=yes])
 		else
-			AC_CHECK_LIB(ncursesw, get_wch, [CURSES_LIB="-lncursesw" CURSES_LIB_NAME=ncursesw CURSES_LIB_WIDE=yes])
+			AC_CHECK_LIB(ncursesw, wget_wch, [CURSES_LIB="-lncursesw" CURSES_LIB_NAME=ncursesw CURSES_LIB_WIDE=yes])
 		fi
 		LIBS="$OLDLIBS"
 	fi
@@ -583,7 +402,7 @@ if eval "test x$CURSES_LIB_NAME = x"; then
 	AC_CHECK_HEADERS(curses.h)
 
 	if test "x$enable_utf8" != xno; then
-		AC_CHECK_LIB(curses, get_wch, [CURSES_LIB="-lcurses" CURSES_LIB_NAME=curses CURSES_LIB_WIDE=yes])
+		AC_CHECK_LIB(curses, wget_wch, [CURSES_LIB="-lcurses" CURSES_LIB_NAME=curses CURSES_LIB_WIDE=yes])
 	fi
 
 	if eval "test x$CURSES_LIB_NAME = x"; then
@@ -594,7 +413,7 @@ fi
 if eval "test x$CURSES_LIB_NAME = x"; then
 	AC_MSG_ERROR([
   *** No curses lib was found.  Please install the curses header files
-  *** from libncursesw5-dev (Debian), ncurses-devel (Fedora), or similar.
+  *** from libncurses-dev (Debian), ncurses-devel (Fedora), or similar.
   *** (Or install ncurses from https://ftp.gnu.org/gnu/ncurses/.)])
 else
 	AC_MSG_RESULT([  The curses library to be used is: $CURSES_LIB_NAME])
@@ -610,36 +429,31 @@ AC_CHECK_LIB([$CURSES_LIB_NAME], [key_defined],
 			 [AC_DEFINE(HAVE_KEY_DEFINED, 1, [Define this if your curses library has the key_defined() function.])],
 			 [], [$CURSES_LIB])
 
-dnl Parse any configure options.
-
 LIBS="$LIBS $CURSES_LIB"
 
 AC_SUBST(CURSES_LIB)
 
 if test "x$enable_utf8" != xno && \
 	test x$CURSES_LIB_WIDE = xyes && \
+	test x$ac_cv_func_iswalpha = xyes && \
 	test x$ac_cv_func_iswalnum = xyes && \
 	test x$ac_cv_func_iswpunct = xyes && \
-	test x$ac_cv_func_mblen = xyes && \
 	test x$ac_cv_func_mbstowcs = xyes && \
-	test x$ac_cv_func_mbtowc = xyes && \
 	test x$ac_cv_func_wctomb = xyes; then
 		AC_DEFINE(ENABLE_UTF8, 1, [Define this if your system has sufficient UTF-8 support.])
 else
 	if test "x$enable_utf8" = xyes; then
 		AC_MSG_ERROR([
-  *** UTF-8 support was requested, but insufficient UTF-8 support was
-  *** detected in your curses and/or C libraries.  Please verify that
-  *** your Slang was built with UTF-8 support or your curses was built
-  *** with wide-character support, and that your C library was built
+  *** UTF-8 support was requested, but insufficient support was
+  *** detected in your curses and/or C libraries.  Please verify
+  *** that both your curses library and your C library were built
   *** with wide-character support.])
 	elif test "x$enable_utf8" != xno; then
 		AC_MSG_WARN([
-  *** Insufficient UTF-8 support was detected in your curses and/or C
-  *** libraries.  If you want UTF-8 support, please verify that your
-  *** Slang was built with UTF-8 support or your curses was built with
-  *** wide-character support, and that your C library was built with
-  *** wide-character support.])
+  *** Insufficient UTF-8 support was detected in your curses
+  *** and/or C libraries.  If you want UTF-8 support, please
+  *** verify that both your curses library and your C library
+  *** were built with wide-character support.])
 	fi
 fi
 
@@ -666,16 +480,16 @@ AC_DEFINE_UNQUOTED(NANO_REG_EXTENDED, $nano_reg_extended,
 				   [Flag(s) to use to get the full range of extended regular expressions])
 
 if test x$color_support = xyes; then
-#    if test x$CURSES_LIB_NAME = xcurses; then
-		AC_MSG_CHECKING([whether _XOPEN_SOURCE_EXTENDED is needed])
-		AC_TRY_RUN([
+	AC_MSG_CHECKING([whether _XOPEN_SOURCE_EXTENDED is needed])
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <curses.h>
 int main(void)
 {
 	int testcolor = COLOR_WHITE;
 	return 0;
-}], AC_MSG_RESULT(no),
-	    AC_TRY_RUN([
+}]])],
+	AC_MSG_RESULT(no),
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #ifndef _XOPEN_SOURCE_EXTENDED
 #define _XOPEN_SOURCE_EXTENDED 1
 #endif
@@ -684,35 +498,38 @@ int main(void)
 {
 	int testcolor = COLOR_WHITE;
 	return 0;
-}],
-		AC_DEFINE(NEED_XOPEN_SOURCE_EXTENDED, 1, [Define this if you need the _XOPEN_SOURCE_EXTENDED macro for color support.])
-		AC_MSG_RESULT(yes),
-		AC_MSG_RESULT(not sure)
-		AC_MSG_WARN([*** Couldn't successfully compile basic color test with or without _XOPEN_SOURCE_EXTENDED])
-		AC_MSG_WARN([*** This build may not compile. Consider configuring with --disable-color or installing ncurses])),
-		AC_MSG_WARN([*** Can't check need for _XOPEN_SOURCE_EXTENDED when cross-compiling]))
-#    fi
+}]])],
+	AC_DEFINE(NEED_XOPEN_SOURCE_EXTENDED, 1, [Define this if you need the _XOPEN_SOURCE_EXTENDED macro for color support.])
+	AC_MSG_RESULT(yes),
+	AC_MSG_RESULT(not sure)
+	AC_MSG_WARN([
+  *** Couldn't successfully compile basic color test with or without
+  *** _XOPEN_SOURCE_EXTENDED.  This build may not compile.  Consider
+  *** configuring with --disable-color or installing ncurses.])),
+	AC_MSG_WARN([
+  *** Can't check need for _XOPEN_SOURCE_EXTENDED when cross-compiling.]))
 fi
 
 AC_MSG_CHECKING([whether LINES and COLS can be redefined])
-AC_TRY_RUN([
+AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <curses.h>
 int main(void)
 {
 	LINES = 80;
 	COLS = 25;
 	return 0;
-}],
+}]])],
 AC_DEFINE(REDEFINING_MACROS_OK, 1, [Define this if you know your curses library allows LINES and COLS to be redefined to deal with a resizing bug.])
 AC_MSG_RESULT(yes),
 AC_MSG_RESULT(no),
-AC_MSG_WARN([*** Can't check for macro redefinability when cross-compiling]))
+AC_MSG_WARN([
+  *** Can't check for macro redefinability when cross-compiling.]))
 
 AS_IF([test "x$enable_libmagic" != "xno"], [
-  AC_CHECK_HEADERS([magic.h])
-  AC_CHECK_LIB(magic, magic_open)
-  AC_CHECK_HEADERS([zlib.h])
-  AC_CHECK_LIB(z, inflate)
+	AC_CHECK_HEADERS([magic.h])
+	AC_CHECK_LIB(magic, magic_open)
+	AC_CHECK_HEADERS([zlib.h])
+	AC_CHECK_LIB(z, inflate)
 ])
 
 # Check for groff html support.
@@ -721,8 +538,8 @@ groff -t -mandoc -Thtml </dev/null >/dev/null
 if test $? -ne 0 ; then
 	AC_MSG_RESULT([no])
 	AC_MSG_WARN([
-  *** Will not generate HTML version of man pages. ***
-  *** Consider installing a newer version of groff with HTML support. ***])
+  *** Will not generate HTML version of man pages.  Consider
+  *** installing a newer version of groff with HTML support.])
 	groff_html_support=no
 else
 	AC_MSG_RESULT([yes])

doc/cheatsheet.html

@@ -2,9 +2,9 @@
 <html lang="en">
 
 <head>
-<title>Cheatsheet for nano</title>
+<title>Cheatsheet for GNU nano</title>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta name="description" content="A concise overview of the command shortcuts of the GNU nano editor, grouped by category.">
+<meta name="description" content="A concise overview of the command shortcuts for nano, the editor, grouped by category.">
 <meta name="keywords" content="cheatsheet, nano, editor, shortcuts, keystrokes, functions, operations, commands">
 <meta name="author" content="Benno Schulenberg">
 </head>
@@ -55,15 +55,15 @@
 <table><tbody>
 <tr><td>Ctrl+H</td><td>Delete character before cursor &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td></tr>
 <tr><td>Ctrl+D</td><td>Delete character under cursor</td></tr>
-<tr><td>Ctrl+Shift+Del &nbsp;&nbsp;</td><td>Delete word to the left</td></tr>
-<tr><td>Ctrl+Del</td><td>Delete word to the right</td></tr>
+<tr><td>Alt+Bsp</td><td>Delete word to the left</td></tr>
+<tr><td>Ctrl+Del &nbsp;&nbsp;</td><td>Delete word to the right</td></tr>
 <tr><td>Alt+Del</td><td>Delete current line</td></tr>
 </tbody></table>
 <br>
 
 <b>Operations</b>
 <table><tbody>
-<tr><td>Ctrl+T &nbsp;&nbsp;</td><td>Run a spell check</td></tr>
+<tr><td>Ctrl+T &nbsp;&nbsp;</td><td>Execute some command</td></tr>
 <tr><td>Ctrl+J</td><td>Justify paragraph or region</td></tr>
 <tr><td>Alt+J</td><td>Justify entire buffer</td></tr>
 <tr><td>Alt+B</td><td>Run a syntax check</td></tr>
@@ -79,14 +79,14 @@
 <table><tbody>
 <tr><td>Ctrl+B &nbsp;&nbsp;</td><td>One character backward</td></tr>
 <tr><td>Ctrl+F</td><td>One character forward</td></tr>
-<tr><td>Ctrl+<b>&leftarrow;</b></td><td>One word backward</td></tr>
-<tr><td>Ctrl+<b>&rightarrow;</b></td><td>One word forward</td></tr>
+<tr><td>Ctrl+<b>&larr;</b></td><td>One word backward</td></tr>
+<tr><td>Ctrl+<b>&rarr;</b></td><td>One word forward</td></tr>
 <tr><td>Ctrl+A</td><td>To start of line</td></tr>
 <tr><td>Ctrl+E</td><td>To end of line</td></tr>
 <tr><td>Ctrl+P</td><td>One line up</td></tr>
 <tr><td>Ctrl+N</td><td>One line down</td></tr>
-<tr><td>Ctrl+<b>&uparrow;</b></td><td>To previous block</td></tr>
-<tr><td>Ctrl+<b>&downarrow;</b></td><td>To next block</td></tr>
+<tr><td>Ctrl+<b>&uarr;</b></td><td>To previous block</td></tr>
+<tr><td>Ctrl+<b>&darr;</b></td><td>To next block</td></tr>
 <tr><td>Ctrl+Y</td><td>One page up</td></tr>
 <tr><td>Ctrl+V</td><td>One page down</td></tr>
 <tr><td>Alt+\</td><td>To top of buffer</td></tr>
@@ -98,8 +98,8 @@
 <table><tbody>
 <tr><td>Alt+G &nbsp;&nbsp;&nbsp;</td><td>Go to specified line</td></tr>
 <tr><td>Alt+]</td><td>Go to complementary bracket</td></tr>
-<tr><td>Alt+<b>&uparrow;</b></td><td>Scroll viewport up</td></tr>
-<tr><td>Alt+<b>&downarrow;</b></td><td>Scroll viewport down</td></tr>
+<tr><td>Alt+<b>&uarr;</b></td><td>Scroll viewport up</td></tr>
+<tr><td>Alt+<b>&darr;</b></td><td>Scroll viewport down</td></tr>
 <tr><td>Alt+&lt;</td><td>Switch to preceding buffer</td></tr>
 <tr><td>Alt+&gt;</td><td>Switch to succeeding buffer</td></tr>
 </tbody></table>
@@ -108,7 +108,7 @@
 <b>Information</b>
 <table><tbody>
 <tr><td>Ctrl+C &nbsp;&nbsp;</td><td>Report cursor position</td></tr>
-<tr><td>Alt+D</td><td>Report word/line/char count</td></tr>
+<tr><td>Alt+D</td><td>Report line/word/character count</td></tr>
 <tr><td>Ctrl+G</td><td>Display help text</td></tr>
 </tbody></table>
 <br>

doc/faq.html

@@ -5,6 +5,9 @@
   <title>The GNU nano editor FAQ</title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta name="description" content="The genesis story of the nano editor, plus the solution to some common problems.">
+  <style>
+    .indented { margin-left: 2em; font-family: courier; font-size: 110%; }
+  </style>
 </head>
 
 <body text="#330000" bgcolor="#ffffff" link="#0000ef" vlink="#51188e" alink="#ff0000">
@@ -40,13 +43,13 @@
 </p></blockquote>
 <h3><a href="#4">4. Running</a></h3>
 <blockquote><p>
-  <a href="#4.1">4.1. How do I open a file with a name beginning with '+' from the command line?</a><br>
-  <a href="#4.2">4.2. Ack! My Backspace/Delete/Enter/Meta/double bucky key doesn't seem to work! What can I do?</a><br>
+  <a href="#4.1">4.1. Alt+Up does nothing on a Linux console. How can I make it scroll?</a><br>
+  <a href="#4.2">4.2. How can I make Ctrl+Shift+Left/Right select words on urxvt?</a><br>
   <a href="#4.3">4.3. Ack! My numeric keypad's keys don't work properly when NumLock is off! What can I do?</a><br>
   <a href="#4.4">4.4. With what keystroke can I paste text from the clipboard into nano?</a><br>
   <a href="#4.5">4.5. How do I select text for or paste text from the clipboard when nano's mouse support is turned on?</a><br>
   <a href="#4.6">4.6. When I paste text into a document, each line gets indented further than the last. Why? And how can I stop this?</a><br>
-  <a href="#4.7">4.7. When I paste from Windows into a remote nano, nano rewraps the lines. What gives?<a><br>
+  <a href="#4.7">4.7. When I paste from Windows into a remote nano, nano rewraps the lines. What gives?</a><br>
   <a href="#4.8">4.8. I've compiled nano with color support, but I don't see any color when I run it!</a><br>
   <a href="#4.9">4.9. How do I make nano my default editor (in Pine, mutt, etc.)?</a><br>
 </p></blockquote>
@@ -89,7 +92,7 @@
 <h3><a name="1.3"></a>1.3. Why the name change from TIP?</h3>
 <blockquote><p>On January 10, 2000, TIP was officially renamed to nano because of a namespace conflict with another program called 'tip'. The original 'tip' program &quot;establishes a full duplex terminal connection to a remote host&quot;, and was included with many older Unix systems (and newer ones like Solaris). The conflict was not noticed at first because there is no 'tip' utility included with most GNU/Linux distributions (where nano was developed).</p></blockquote>
 <h3><a name="1.4"></a>1.4. What is the current version of nano?</h3>
-<blockquote><p>The current version of nano <i>should</i> be <b>5.0</b>.  Of course, you should always check the <a href="https://nano-editor.org/">nano homepage</a> to see what the latest and greatest version is.</p></blockquote>
+<blockquote><p>The current version of nano <i>should</i> be <b>6.0</b>.  Of course, you should always check the <a href="https://nano-editor.org/">nano homepage</a> to see what the latest and greatest version is.</p></blockquote>
 <h3><a name="1.5"></a>1.5. I want to read the man page without having to download the program!</h3>
 <blockquote><p>Jeez, demanding, aren't we? Okay, look <a href="https://nano-editor.org/dist/latest/nano.1.html">here</a>.</p></blockquote>
 <hr width="100%">
@@ -127,39 +130,39 @@
 <blockquote><p>It's simple really! As root, type <b>rpm -Uvh nano-x.y-1*.rpm</b> if you have a RedHat-ish system or <b>dpkg -i nano_x.y-1*.deb</b> if you have a Debian-ish system, where <b>x.y</b> is the version number of nano. There are other programs to install packages, and if you wish to use those, knock yourself out.</p></blockquote>
 <h3><a name="3.2"></a>3.2. Compiling from source: WHAT THE HECK DO I DO NOW?</h3>
 <blockquote><p>Okay, take a deep breath, this really isn't hard. Unpack the nano source with a command like:</p>
-  <p><b>tar -xvf nano-x.y.tar.gz</b></p>
+  <p class="indented"><b>tar -xvf nano-x.y.tar.gz</b></p>
   <p>Then you need to run <b>configure</b> with any options you might want (if any).</p>
   <p>The average case is this:</p>
-  <p><b>cd nano-x.y/</b><br>
+  <p class="indented"><b>cd nano-x.y/</b><br>
   <b>./configure</b><br>
   <b>make</b><br>
-  <b>make install</b> (as root, of course)</p></blockquote>
+  <b>make install</b>&nbsp;&nbsp; #(as root, of course)</p></blockquote>
 <h3><a name="3.3"></a>3.3. Why does everything go into /usr/local?</h3>
 <blockquote><p>Well, that's what the <b>configure</b> script defaults to. If you wish to change this, simply do this:</p>
-  <p><b>./configure --prefix=/usr</b></p>
+  <p class="indented"><b>./configure --prefix=/usr</b></p>
   <p>This will put nano into /usr/bin when you run <b>make install</b>.</p></blockquote>
 <h3><a name="3.4"></a>3.4. nano should automatically run strip on the binary when installing it!</h3>
 <blockquote><p>It does when you use <b>make install-strip</b>. The default <b>make install</b> does not, and will not, run strip automatically.</p></blockquote>
 <h3><a name="3.5"></a>3.5. How can I make the executable smaller? This is too bloated!</h3>
 <blockquote><p>Actually, there are several parts of the editor that can be disabled. You can pass arguments to the <b>configure</b> script that disable certain features. Here's a brief list:</p>
   <pre>
-  <b>--disable-browser</b>       Disable the built-in file browser
-  <b>--disable-color</b>         Disable color and syntax highlighting
-  <b>--disable-comment</b>       Disable the comment/uncomment function
-  <b>--disable-extra</b>         Disable the easter egg
-  <b>--disable-help</b>          Disable the built-in help texts
-  <b>--disable-histories</b>     Disable the saving of search strings and cursor positions
-  <b>--disable-justify</b>       Disable the justify/unjustify functions
-  <b>--disable-libmagic</b>      Disable the use of libmagic for determining a file's syntax
-  <b>--disable-linenumbers</b>   Disable line numbering
-  <b>--disable-mouse</b>         Disable mouse support
-  <b>--disable-multibuffer</b>   Disable the opening of multiple file buffers
-  <b>--disable-nanorc</b>        Disable the use of .nanorc files
-  <b>--disable-operatingdir</b>  Disable the setting of an operating directory
-  <b>--disable-speller</b>       Disable the spell-checker functions
-  <b>--disable-tabcomp</b>       Disable the tab-completion functions
-  <b>--disable-wordcomp</b>      Disable the word-completion function
-  <b>--disable-wrapping</b>      Disable all hard-wrapping of text</pre>
+    <b>--disable-browser</b>       Disable the built-in file browser
+    <b>--disable-color</b>         Disable color and syntax highlighting
+    <b>--disable-comment</b>       Disable the comment/uncomment function
+    <b>--disable-extra</b>         Disable the easter egg
+    <b>--disable-help</b>          Disable the built-in help texts
+    <b>--disable-histories</b>     Disable the saving of search strings and cursor positions
+    <b>--disable-justify</b>       Disable the justify/unjustify functions
+    <b>--disable-libmagic</b>      Disable the use of libmagic for determining a file's syntax
+    <b>--disable-linenumbers</b>   Disable line numbering
+    <b>--disable-mouse</b>         Disable mouse support
+    <b>--disable-multibuffer</b>   Disable the opening of multiple file buffers
+    <b>--disable-nanorc</b>        Disable the use of .nanorc files
+    <b>--disable-operatingdir</b>  Disable the setting of an operating directory
+    <b>--disable-speller</b>       Disable the spell-checker functions
+    <b>--disable-tabcomp</b>       Disable the tab-completion functions
+    <b>--disable-wordcomp</b>      Disable the word-completion function
+    <b>--disable-wrapping</b>      Disable all hard-wrapping of text</pre>
   <p>There's also the <b>--enable-tiny</b> option which disables everything above, as well as some larger chunks of the program (like the undo/redo code and the code for selecting text). Also, if you know you don't need other languages, you can use <b>--disable-nls</b> to disable internationalization and save a few kilobytes. And finally, there's always good old <b>strip</b> to remove all unneeded symbols.</p>
 </blockquote>
 <h3><a name="3.6"></a>3.6. Tell me more about this multibuffer stuff!</h3>
@@ -175,17 +178,40 @@
 <hr width="100%">
 
 <h1><a name="4"></a>4. Running</h1>
-<h3><a name="4.1"></a>4.1. How do I open a file with a name beginning with '+' from the command line?</h3>
-<blockquote><p>If a command-line argument that begins with '+' is followed by another argument, the former is always treated as a starting line (plus column number), and the latter always as a filename. If a command-line argument that begins with '+' isn't followed by another argument, it's treated as a filename. Examples:</p>
-  <p>To open '+filename.txt': <b>nano +filename.txt</b><br>
-  To open '+filename.txt' starting on line 10: <b>nano +10 +filename.txt</b><br>
-  To open '+filename.txt' starting on line 1, column 20: <b>nano +,20 +filename.txt</b><br>
-  To open '+filename.txt' starting on line 10, column 20: <b>nano +10,20 +filename.txt</b><br>
-  To open '+filename.txt' starting on line 1 and 'filename.txt' starting on line 40: <b>nano +1 +filename.txt +40 filename.txt</b></p></blockquote>
-<h3><a name="4.2"></a>4.2. Ack! My Backspace/Delete/Enter/Meta/double bucky key doesn't seem to work! What can I do?</h3>
-<blockquote><p>Try setting your $TERM variable to 'vt100'. nano doesn't yet support every term entry under the sun.</p>
-  <p>Bourne shell users (bash and sh): <b>export TERM=vt100</b><br>
-  C Shell users (tcsh and csh): <b>setenv TERM vt100</b></p></blockquote>
+<h3><a name="4.1"></a>4.1. Alt+Up does nothing on a Linux console. How can I make it scroll?</h3>
+<blockquote><p>On Debian and its derivatives, the <b>Alt+Up</b> keystroke on a Linux console
+  produces by default a 'KeyboardSignal', which normally does absolutely nothing and is useless
+  for the average user.  To get the keystroke to do what it ought to do (scroll the viewport
+  one row up), run this in a Linux console:</p>
+  <p class="indented"><b>dumpkeys --full | sed s/KeyboardSignal/Up/ | sudo loadkeys -</b></p>
+  <p>You will need to run this command whenever you first switch to a Linux console.</p>
+  <p>Or you can (as root) execute the following little script just once:</p>
+  <p class="indented"><b>for file in /etc/console-setup/cached*.kmap.gz; do<br>
+  &nbsp;&nbsp;&nbsp;&nbsp;gunzip $file;<br>
+  &nbsp;&nbsp;&nbsp;&nbsp;sed -i 's/KeyboardSignal/Up/' ${file%.gz};<br>
+  &nbsp;&nbsp;&nbsp;&nbsp;gzip ${file%.gz};<br>
+  done</b></p></blockquote>
+<h3><a name="4.2"></a>4.2. How can I make Ctrl+Shift+Left/Right select words on urxvt?</h3>
+<blockquote><p>The urxvt terminal emulator produces non-standard escape sequences for the modified cursor keys.  These deviant sequences are not listed in the terminfo database, which means that ncurses does not recognize them.  The easiest way around this is to tell urxvt to produce xterm-compatible escape sequences for the relevant keystrokes.  To achieve this, add the following lines to your ~/.Xresources file:</p>
+<pre>
+    URxvt.iso14755_52: False
+
+    URxvt.keysym.C-S-Up: \033[1;6A
+    URxvt.keysym.C-S-Down: \033[1;6B
+    URxvt.keysym.C-S-Right: \033[1;6C
+    URxvt.keysym.C-S-Left: \033[1;6D
+
+    URxvt.keysym.M-Up: \033[1;3A
+    URxvt.keysym.M-Down: \033[1;3B
+    URxvt.keysym.M-Right: \033[1;3C
+    URxvt.keysym.M-Left: \033[1;3D
+
+    URxvt.keysym.M-Insert: \033[2;3~
+    URxvt.keysym.M-Delete: \033[3;3~
+
+    URxvt.keysym.M-Page_Up: \033[5;3~
+    URxvt.keysym.M-Page_Down: \033[6;3~</pre>
+<p>Then run <b>xrdb ~/.Xresources</b> and restart your urxvt terminal.  Now <b>Ctrl+Shift+Left</b> and <b>Ctrl+Shift+Right</b> will select words, <b>Alt+Up</b> and <b>Alt+Down</b> will scroll the text without moving the cursor, and several such things more.</p></blockquote>
 <h3><a name="4.3"></a>4.3. Ack! My numeric keypad's keys don't work properly when NumLock is off! What can I do?</h3>
 <blockquote><p>You can use the <b>-K</b> or <b>--rawsequences</b> option on the command line, or add the line <b>set rawsequences</b> to your .nanorc. However, nano's mouse support will be disabled if you do any of these things.</p></blockquote>
 <h3><a name="4.4"></a>4.4. With what keystroke can I paste text from the clipboard into nano?</h3>
@@ -202,16 +228,16 @@
 <blockquote><p>If you want nano to actually use color, you have to specify the color configurations you want it to use in your .nanorc. Several example configurations are in the <b>syntax/</b> subdirectory of the nano source, which are normally installed to <b>/usr/local/share/nano/</b>. To enable all of them, uncomment the line <b># include "/usr/local/share/nano/*.nanorc"</b> in your nanorc. See also section <a href="#3.9">3.9</a>.</p></blockquote>
 <h3><a name="4.9"></a>4.9. How do I make nano my default editor (in Pine, mutt, etc.)?</h3>
 <blockquote><p>You need to make nano your $EDITOR. If you want this to be saved, you should put a line like this in your <b>.bashrc</b> if you use bash (or <b>.zshrc</b> if you believe in zsh):</p>
-  <p><b>export EDITOR=/usr/local/bin/nano</b></p>
+  <p class="indented"><b>export EDITOR=/usr/local/bin/nano</b></p>
   <p>or, if you use tcsh, put this in your <b>.cshrc</b> file:</p>
-  <p><b>setenv EDITOR /usr/local/bin/nano</b></p>
+  <p class="indented"><b>setenv EDITOR /usr/local/bin/nano</b></p>
   <p>Change /usr/local/bin/nano to wherever nano is installed on your system. Type &quot;which nano&quot; to find out. This will not take effect until the next time you log in. So log out and back in again.</p>
   <p>Then, on top of that, if you use Pine, you must go into setup (type <b>S</b> at the main menu), and then configure (type <b>C</b>). Hit Enter on the lines that say:</p>
-  <p><b>[ ] enable-alternate-editor-cmd</b><br>
+  <p class="indented"><b>[ ] enable-alternate-editor-cmd</b><br>
   <b>[ ] enable-alternate-editor-implicitly</b></p>
   <p>Then exit (<b>E</b>) and select Yes (<b>Y</b>).</p>
   <p>If you're a mutt user, you should see an effect immediately the next time you log in. No further configuration is needed. However, if you want to let people know you use nano to compose your email messages, you can put a line like this in your <b>.muttrc</b>:</p>
-  <p><b>my_hdr X-Composer: nano-x.y</b></p>
+  <p class="indented"><b>my_hdr X-Composer: nano-x.y</b></p>
   <p>Again, replace x.y with the version of nano you use.</p></blockquote>
 <hr width="100%">
 

doc/nano.1

@@ -1,4 +1,4 @@
-.\" Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.
+.\" Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.
 .\"
 .\" This document is dual-licensed.  You may distribute and/or modify it
 .\" under the terms of either of the following licenses:
@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH NANO 1 "version 5.0" "July 2020"
+.TH NANO 1 "version 6.0" "December 2021"
 
 .SH NAME
 nano \- Nano's ANOther editor, inspired by Pico
@@ -27,20 +27,6 @@ nano \- Nano's ANOther editor, inspired by Pico
 .sp
 .BR nano " [" \fIoptions "] [[" + [ crCR ]( / | ? ) \fIstring "] " \fIfile ]...
 
-.SH NOTICE
-Since version 4.0, \fBnano\fR by default:
-.sp
-.RS 4
-\(bu does not automatically hard-wrap lines that become overlong,
-.br
-\(bu includes the line below the title bar in the editing area,
-.br
-\(bu does linewise (smooth) scrolling.
-.RE
-.sp
-If you want the old, Pico behavior back, you can use \fB\-\-breaklonglines\fR,
-\fB\-\-emptyline\fR, and \fB\-\-jumpyscrolling\fR (or \fB\-bej\fR for short).
-
 .SH DESCRIPTION
 \fBnano\fP is a small and friendly editor.  It copies the look and feel
 of Pico, but is free software, and implements several features that Pico
@@ -58,7 +44,7 @@ regular expression by inserting \fBc\fR and/or \fBr\fR after the \fB+\fR sign.
 These search modes can be explicitly disabled by using the uppercase variant
 of those letters: \fBC\fR and/or \fBR\fR.  When the string contains spaces,
 it needs to be enclosed in quotes.  To give an example: to open a file at
-the first occurrence of the word "Foo", one would do:
+the first occurrence of the word "Foo", you would do:
 .sp
 .RS 4
 .BI "nano +c/Foo " file
@@ -77,11 +63,11 @@ Any cursor movement or executing any other command will cause the next
 \fB^K\fR to overwrite the cutbuffer.  A \fB^U\fR will paste the current
 contents of the cutbuffer at the current cursor position.
 .sp
-When a more precise piece of text needs to be cut or copied, one can mark
+When a more precise piece of text needs to be cut or copied, you can mark
 its start with \fB^6\fR, move the cursor to its end (the marked text will be
 highlighted), and then use \fB^K\fR to cut it, or \fBM\-6\fR to copy it to the
-cutbuffer.  One can also save the marked text to a file with \fB^O\fR, or
-spell check it with \fB^T\fR.
+cutbuffer.  You can also save the marked text to a file with \fB^O\fR, or
+spell check it with \fB^T^T\fR.
 .sp
 On some terminals, text can be selected also by holding down Shift while
 using the arrow keys.  Holding down the Ctrl or Alt key too will increase
@@ -93,6 +79,20 @@ the built-in help (\fB^G\fR) lists all the available ones.
 The default key bindings can be changed via a \fInanorc\fR file -- see
 .BR nanorc (5).
 
+.SH NOTICE
+Since version 4.0, \fBnano\fR by default:
+.sp
+.RS 4
+\(bu does not automatically hard-wrap lines that become overlong,
+.br
+\(bu includes the line below the title bar in the editing area,
+.br
+\(bu does linewise (smooth) scrolling.
+.RE
+.sp
+If you want the old, Pico behavior back, you can use \fB\-\-breaklonglines\fR,
+\fB\-\-emptyline\fR, and \fB\-\-jumpyscrolling\fR (or \fB\-bej\fR for short).
+
 .SH OPTIONS
 .TP
 .BR \-A ", " \-\-smarthome
@@ -118,7 +118,8 @@ by setting the options \fBtitlecolor\fP, \fBstatuscolor\fP, \fBkeycolor\fP,
 nanorc file.  See \fBnanorc\fR(5).
 .TP
 .BR \-E ", " \-\-tabstospaces
-Convert typed tabs to spaces.
+Convert each typed tab to spaces -- to the number of spaces
+that a tab at that position would take up.
 .TP
 .BR \-F ", " \-\-multibuffer
 Read a file into a new buffer by default.
@@ -139,10 +140,12 @@ text.  (The color of the stripe can be changed with \fBset stripecolor\fR
 in your \fInanorc\fR file.)
 .TP
 .BR \-K ", " \-\-rawsequences
-Interpret escape sequences directly (instead of asking \fBncurses\fR to
-translate them).  If you need this option to get your keyboard to work
-properly, please report a bug.  Using this option disables \fBnano\fR's
-mouse support.
+Interpret escape sequences directly, instead of asking \fBncurses\fR
+to translate them.  (If you need this option to get some keys to work
+properly, it means that the terminfo terminal description that is used
+does not fully match the actual behavior of your terminal.  This can
+happen when you ssh into a BSD machine, for example.)
+Using this option disables \fBnano\fR's mouse support.
 .TP
 .BR \-L ", " \-\-nonewlines
 Don't automatically add a newline when a text does not end with one.
@@ -165,7 +168,7 @@ and place it at that position again upon reopening such a file.
 .TP
 .BR "\-Q ""\fIregex\fB""" ", " "\-\-quotestr=""" \fIregex """
 Set the regular expression for matching the quoting part of a line.
-The default value is \fB"^([\ \\t]*([!#%:;>|}]|//))+"\fP.
+The default value is "\fB^([\ \\t]*([!#%:;>|}]|//))+\fR".
 (Note that \fB\\t\fP stands for an actual Tab.)
 This makes it possible to rejustify blocks of quoted text when composing
 email, and to rewrap blocks of line comments when writing source code.
@@ -187,12 +190,15 @@ the screen's edge, by using also \fB\-\-atblanks\fR.)
 .TP
 .BR \-T\ \fInumber ", " \-\-tabsize= \fInumber
 Set the size (width) of a tab to \fInumber\fP columns.  The value of
-\fInumber\fP must be greater than 0.  The default value is 8.
+\fInumber\fR must be greater than 0.  The default value is \fB8\fR.
 .TP
 .BR \-U ", " \-\-quickblank
-Do quick status-bar blanking: status-bar messages will disappear after 1
-keystroke instead of 25.  Note that option \fB\-c\fR (\fB\-\-constantshow\fR)
-overrides this.
+Make status-bar messages disappear after 1 keystroke instead of after 20.
+Note that option \fB\-c\fR (\fB\-\-constantshow\fR) overrides this.
+When option \fB\-\-minibar\fR or \fB\-\-zero\fR is in effect,
+\fB\-\-quickblank\fR makes a message disappear after
+0.8 seconds instead of after the default 1.5 seconds.
+.
 .TP
 .BR \-V ", " \-\-version
 Show the current version number and exit.
@@ -261,6 +267,7 @@ position to the end of the line, instead of cutting the entire line.
 .TP
 .BR \-l ", " \-\-linenumbers
 Display line numbers to the left of the text area.
+(Any line with an anchor additionally gets a mark in the margin.)
 .TP
 .BR \-m ", " \-\-mouse
 Enable mouse support, if available for your system.  When enabled, mouse
@@ -294,11 +301,11 @@ Set the target width for justifying and automatic hard-wrapping at this
 \fInumber\fR of columns.  If the value is 0 or less, wrapping will occur
 at the width of the screen minus \fInumber\fR columns, allowing the wrap
 point to vary along with the width of the screen if the screen is resized.
-The default value is \-8.
+The default value is \fB\-8\fR.
 .TP
 .B "\-s ""\fIprogram\fR [\fIargument \fR...]\fB""\fR, \fB\-\-speller=""\fIprogram\fR [\fIargument \fR...]\fB"""
 Use this command to perform spell checking and correcting, instead of
-using the built-in corrector that calls \fBhunspell\fR or GNU \fBspell\fR.
+using the built-in corrector that calls \fBhunspell\fR(1) or \fBspell\fR(1).
 .TP
 .BR \-t ", " \-\-saveonexit
 Save a changed buffer without prompting (when exiting with \fB^X\fR).
@@ -318,7 +325,6 @@ unless \fB\-\-restricted\fR is given too.
 Do not automatically hard-wrap the current line when it becomes overlong.
 This is the default.  (This option is the opposite of \fB\-b\fR
 (\fB\-\-breaklonglines\fR) -- the last one given takes effect.)
-
 .TP
 .BR \-x ", " \-\-nohelp
 Don't show the two help lines at the bottom of the screen.
@@ -327,7 +333,46 @@ Don't show the two help lines at the bottom of the screen.
 Make Ctrl+Right and Ctrl+Delete stop at word ends instead of beginnings.
 .TP
 .BR \-z ", " \-\-suspendable
-Allow the user to suspend the editor (with \fB^Z\fR by default).
+Obsolete option; ignored.  Suspension is enabled by default,
+reachable via \fB^T^Z\fR.  (If you want a plain \fB^Z\fR to
+suspend nano, add \fBbind ^Z suspend main\fR to your nanorc.)
+.TP
+.BR \-% ", " \-\-stateflags
+Use the top-right corner of the screen for showing some state flags:
+\fBI\fR when auto-indenting, \fBM\fR when the mark is on, \fBL\fR when
+hard-wrapping (breaking long lines), \fBR\fR when recording a macro,
+and \fBS\fR when soft-wrapping.
+When the buffer is modified, a star (\fB*\fR) is shown after the
+filename in the center of the title bar.
+.TP
+.BR \-_ ", " \-\-minibar
+Suppress the title bar and instead show information about
+the current buffer at the bottom of the screen, in the space
+for the status bar.  In this "minibar" the filename is shown
+on the left, followed by an asterisk if the buffer has been modified.
+On the right are displayed the current line and column number, the
+code of the character under the cursor (in Unicode format: U+xxxx),
+the same flags as are shown by \fB\-\-stateflags\fR, and a percentage
+that expresses how far the cursor is into the file (linewise).
+When a file is loaded or saved, and also when switching between buffers,
+the number of lines in the buffer is displayed after the filename.
+This number is cleared upon the next keystroke, or replaced with an
+[i/n] counter when multiple buffers are open.
+The line plus column numbers and the character code are displayed only when
+\fB\-\-constantshow\fR is used, and can be toggled on and off with \fBM-C\fR.
+The state flags are displayed only when \fB\-\-stateflags\fR is used.
+.TP
+.BR \-0 ", " \-\-zero
+Hide all elements of the interface (title bar, status bar, and help lines)
+and use all rows of the terminal for showing the contents of the buffer.
+The status bar appears only when there is a significant message,
+and disappears after 1.5 seconds or upon the next keystroke.
+With \fBM-Z\fR the title bar plus status bar can be toggled.
+With \fBM-X\fR the help lines.
+.TP
+.BR \-! ", " \-\-magic
+When neither the file's name nor its first line give a clue,
+try using libmagic to determine the applicable syntax.
 
 .SH TOGGLES
 Several of the above options can be switched on and off also while
@@ -350,6 +395,9 @@ exists), either \fI~/.nanorc\fR or \fI$XDG_CONFIG_HOME/nano/nanorc\fR
 or \fI~/.config/nano/nanorc\fR, whichever is encountered first.  See
 .BR nanorc (5)
 for more information on the possible contents of those files.
+.sp
+See \fI/usr/share/nano/\fR and \fI/usr/share/nano/extra/\fR
+for available syntax-coloring definitions.
 
 .SH NOTES
 If no alternative spell checker command is specified on the command

doc/nanorc.5

@@ -1,4 +1,4 @@
-.\" Copyright (C) 2003-2011, 2013-2020 Free Software Foundation, Inc.
+.\" Copyright (C) 2003-2011, 2013-2021 Free Software Foundation, Inc.
 .\"
 .\" This document is dual-licensed.  You may distribute and/or modify it
 .\" under the terms of either of the following licenses:
@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH NANORC 5 "version 5.0" "July 2020"
+.TH NANORC 5 "version 6.0" "December 2021"
 
 .SH NAME
 nanorc \- GNU nano's configuration file
@@ -65,7 +65,6 @@ Quotes inside the \fIcharacters\fR  parameters below should not be escaped.
 The last double quote on the line will be seen as the closing quote.
 .sp
 The supported commands and arguments are:
-
 .TP 3
 .B set afterends
 Make Ctrl+Right and Ctrl+Delete stop at word ends instead of beginnings.
@@ -108,7 +107,7 @@ beginning of a paragraph (unless auto-indenting is on).
 Set the characters treated as closing brackets when justifying
 paragraphs.  This may not include blank characters.  Only closing
 punctuation (see \fBset punct\fP), optionally followed by the specified
-closing brackets, can end sentences.  The default value is "\fB"')>]}\fP".
+closing brackets, can end sentences.  The default value is "\fB\(dq')>]}\fR".
 .TP
 .B set breaklonglines
 Automatically hard-wrap the current line when it becomes overlong.
@@ -128,7 +127,7 @@ Do not use the line below the title bar, leaving it entirely blank.
 .TP
 .B set errorcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
 Use this color combination for the status bar when an error message is displayed.
-The default value is \fBbrightwhite,red\fR.
+The default value is \fBbold,white,red\fR.
 See \fBset titlecolor\fR for valid color names.
 .TP
 .B set fill \fInumber\fR
@@ -139,7 +138,7 @@ point to vary along with the width of the screen if the screen is resized.
 The default value is \fB\-8\fR.
 .TP
 .B set functioncolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the function descriptions
+Use this color combination for the concise function descriptions
 in the two help lines at the bottom of the screen.
 See \fBset titlecolor\fR for more details.
 .TP
@@ -160,25 +159,50 @@ and how much of the buffer is covered by the viewport.
 Scroll the buffer contents per half-screen instead of per line.
 .TP
 .B set keycolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the shortcut key combos
+Use this color combination for the shortcut key combos
 in the two help lines at the bottom of the screen.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set linenumbers
 Display line numbers to the left of the text area.
+(Any line with an anchor additionally gets a mark in the margin.)
 .TP
 .B set locking
 Enable vim-style lock-files for when editing files.
 .TP
+.B set magic
+When neither the file's name nor its first line give a clue,
+try using libmagic to determine the applicable syntax.
+(Calling libmagic can be relatively time consuming.
+It is therefore not done by default.)
+.TP
 .BI "set matchbrackets """ characters """
-Set the opening and closing brackets that can be found by bracket
+Specify the opening and closing brackets that can be found by bracket
 searches.  This may not include blank characters.  The opening set must
 come before the closing set, and the two sets must be in the same order.
 The default value is "\fB(<[{)>]}\fP".
 .TP
-.B set morespace
-Deprecated option since it has become the default setting.
-When needed, use \fBunset emptyline\fR instead.
+.B set minibar
+Suppress the title bar and instead show information about
+the current buffer at the bottom of the screen, in the space
+for the status bar.  In this "minibar" the filename is shown
+on the left, followed by an asterisk if the buffer has been modified.
+On the right are displayed the current line and column number, the
+code of the character under the cursor (in Unicode format: U+xxxx),
+the same flags as are shown by \fBset stateflags\fR, and a percentage
+that expresses how far the cursor is into the file (linewise).
+When a file is loaded or saved, and also when switching between buffers,
+the number of lines in the buffer is displayed after the filename.
+This number is cleared upon the next keystroke, or replaced with an
+[i/n] counter when multiple buffers are open.
+The line plus column numbers and the character code are displayed only when
+\fBset constantshow\fR is used, and can be toggled on and off with \fBM-C\fR.
+The state flags are displayed only when \fBset stateflags\fR is used.
+.TP
+.B set minicolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
+Use this color combination for the minibar.
+(When this option is not specified, the colors of the title bar are used.)
+See \fBset titlecolor\fR for more details.
 .TP
 .B set mouse
 Enable mouse support, if available for your system.  When enabled, mouse
@@ -200,15 +224,12 @@ Don't display the two help lines at the bottom of the screen.
 Don't automatically add a newline when a text does not end with one.
 (This can cause you to save non-POSIX text files.)
 .TP
-.B set nopauses
-Obsolete option.  Ignored.
-.TP
 .B set nowrap
 Deprecated option since it has become the default setting.
 When needed, use \fBunset breaklonglines\fR instead.
 .TP
 .B set numbercolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for line numbers.
+Use this color combination for line numbers.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set operatingdir "\fIdirectory\fP"
@@ -224,6 +245,11 @@ The cursor position is remembered for the 200 most-recently edited files.
 .B set preserve
 Preserve the XON and XOFF keys (\fB^Q\fR and \fB^S\fR).
 .TP
+.B set promptcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
+Use this color combination for the prompt bar.
+(When this option is not specified, the colors of the title bar are used.)
+See \fBset titlecolor\fR for more details.
+.TP
 .BI "set punct """ characters """
 Set the characters treated as closing punctuation when justifying
 paragraphs.  This may not include blank characters.  Only the
@@ -231,8 +257,11 @@ specfified closing punctuation, optionally followed by closing brackets
 (see \fBbrackets\fP), can end sentences.  The default value is "\fB!.?\fP".
 .TP
 .B set quickblank
-Do quick status-bar blanking: status-bar messages will disappear after 1
-keystroke instead of 25.  The option \fBconstantshow\fR overrides this.
+Make status-bar messages disappear after 1 keystroke instead of after 20.
+Note that option \fBconstantshow\fR overrides this.
+When option \fBminibar\fR or \fBzero\fR is in effect,
+\fBquickblank\fR makes a message disappear after
+0.8 seconds instead of after the default 1.5 seconds.
 .TP
 .BI "set quotestr """ regex """
 Set the regular expression for matching the quoting part of a line.
@@ -242,10 +271,12 @@ This makes it possible to rejustify blocks of quoted text when composing
 email, and to rewrap blocks of line comments when writing source code.
 .TP
 .B set rawsequences
-Interpret escape sequences directly (instead of asking \fBncurses\fR to
-translate them).  If you need this option to get your keyboard to work
-properly, please report a bug.  Using this option disables \fBnano\fR's
-mouse support.
+Interpret escape sequences directly, instead of asking \fBncurses\fR
+to translate them.  (If you need this option to get some keys to work
+properly, it means that the terminfo terminal description that is used
+does not fully match the actual behavior of your terminal.  This can
+happen when you ssh into a BSD machine, for example.)
+Using this option disables \fBnano\fR's mouse support.
 .TP
 .B set rebinddelete
 Interpret the Delete and Backspace keys differently so that both Backspace
@@ -260,13 +291,20 @@ Regular expressions in \fBnano\fR are of the extended type (ERE).
 Save a changed buffer automatically on exit (\fB^X\fR); don't prompt.
 (The old form of this option, \fBset tempfile\fR, is deprecated.)
 .TP
+.B set scrollercolor \fIfgcolor\fB,\fIbgcolor\fR
+Use this color combination for the indicator alias "scrollbar".
+(On terminal emulators that link to a libvte older than version 0.55,
+using a background color here does not work correctly.)
+See \fBset titlecolor\fR for more details.
+.TP
 .B set selectedcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for selected text.
+Use this color combination for selected text.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set showcursor
-Put the cursor on the highlighted item in the file browser, to aid
-braille users.
+Put the cursor on the highlighted item in the file browser, and show
+the cursor in the help viewer, to aid braille users and people with
+poor vision.
 .TP
 .B set smarthome
 Make the Home key smarter.  When Home is pressed anywhere but at the
@@ -275,10 +313,6 @@ jump to that beginning (either forwards or backwards).  If the cursor is
 already at that position, it will jump to the true beginning of the
 line.
 .TP
-.B set smooth
-Deprecated option since it has become the default setting.
-When needed, use \fBunset jumpyscrolling\fR instead.
-.TP
 .B set softwrap
 Display lines that exceed the screen's width over multiple screen lines.
 (You can make this soft-wrapping occur at whitespace instead of rudely at
@@ -286,38 +320,64 @@ the screen's edge, by using also \fBset atblanks\fR.)
 .TP
 .B set speller """\fIprogram\fR [\fIargument \fR...]\fB"""
 Use the given \fIprogram\fR to do spell checking and correcting, instead of
-using the built-in corrector that calls \fBhunspell\fR or GNU \fBspell\fR.
+using the built-in corrector that calls \fBhunspell\fR(1) or \fBspell\fR(1).
+.TP
+.B set spotlightcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
+Use this color combination for highlighting a search match.
+The default value is \fBblack,lightyellow\fR.
+See \fBset titlecolor\fR for valid color names.
+.TP
+.B set stateflags
+Use the top-right corner of the screen for showing some state flags:
+\fBI\fR when auto-indenting, \fBM\fR when the mark is on, \fBL\fR when
+hard-wrapping (breaking long lines), \fBR\fR when recording a macro,
+and \fBS\fR when soft-wrapping.
+When the buffer is modified, a star (\fB*\fR) is shown after the
+filename in the center of the title bar.
 .TP
 .B set  statuscolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the status bar.
+Use this color combination for the status bar.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set stripecolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the vertical guiding stripe.
+Use this color combination for the vertical guiding stripe.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set suspendable
-Allow \fBnano\fP to be suspended (with \fB^Z\fR by default).
+Obsolete option; ignored.  Suspension is enabled by default,
+reachable via \fB^T^Z\fR.  (If you want a plain \fB^Z\fR to
+suspend nano, add \fBbind ^Z suspend main\fR to your nanorc.)
 .TP
 .B set tabsize \fInumber\fR
 Use a tab size of \fInumber\fR columns.  The value of \fInumber\fP must be
 greater than 0.  The default value is \fB8\fR.
 .TP
 .B set tabstospaces
-Convert typed tabs to spaces.
+Convert each typed tab to spaces -- to the number of spaces
+that a tab at that position would take up.
 .TP
 .B set titlecolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the title bar.
+Use this color combination for the title bar.
 Valid names for the foreground and background colors are:
 .BR red ", " green ", " blue ", " magenta ", " yellow ", " cyan ", "
 .BR white ", and " black .
 Each of these eight names may be prefixed with the word \fBlight\fR
 to get a brighter version of that color.
+The word \fBgrey\fR or \fBgray\fR may be used
+as a synonym for \fBlightblack\fR.
 On terminal emulators that can do at least 256 colors,
 other valid (but unprefixable) color names are:
 .BR pink ", " purple ", " mauve ", " lagoon ", " mint ", "
-.BR lime ", " peach ", " orange ", " latte ", and " normal
+.BR lime ", " peach ", " orange ", " latte ", "
+.BR rosy ", " beet ", " plum ", " sea ", " sky ", " slate ", "
+.BR teal ", " sage ", " brown ", " ocher ", " sand ", " tawny ", "
+.BR brick ", " crimson ", and " normal
 -- where \fBnormal\fR means the default foreground or background color.
+On such emulators, the color may also be specified as a three-digit hexadecimal
+number prefixed with \fB#\fR, with the digits representing the amounts of red,
+green, and blue, respectively.  This tells \fBnano\fR to select from the
+available palette the color that approximates the given values.
+
 Either "\fIfgcolor\fR" or "\fB,\fIbgcolor\fR" may be left out,
 and the pair may be preceded by \fBbold\fR and/or \fBitalic\fR
 (separated by commas) to get a bold and/or slanting typeface,
@@ -332,11 +392,6 @@ Save a file by default in Unix format.  This overrides nano's
 default behavior of saving a file in the format that it had.
 (This option has no effect when you also use \fBset noconvert\fR.)
 .TP
-.B set view
-Disallow file modification: read-only mode.
-This mode allows the user to open also other files for viewing,
-unless \fB\-\-restricted\fR is given on the command line.
-.TP
 .BI "set whitespace """ characters """
 Set the two characters used to indicate the presence of tabs and
 spaces.  They must be single-column characters.  The default pair
@@ -354,6 +409,14 @@ probably want to unset \fBwordbounds\fR.
 .B set zap
 Let an unmodified Backspace or Delete erase the marked region
 (instead of a single character, and without affecting the cutbuffer).
+.TP
+.B set zero
+Hide all elements of the interface (title bar, status bar, and help lines)
+and use all rows of the terminal for showing the contents of the buffer.
+The status bar appears only when there is a significant message,
+and disappears after 1.5 seconds or upon the next keystroke.
+With \fBM-Z\fR the title bar plus status bar can be toggled.
+With \fBM-X\fR the help lines.
 
 .SH SYNTAX HIGHLIGHTING
 Coloring the different syntactic elements of a file
@@ -385,13 +448,13 @@ Start the definition of a syntax with this \fIname\fR.
 All subsequent \fBcolor\fR and other such commands
 will be added to this syntax, until a new \fBsyntax\fR
 command is encountered.
-
+.sp
 When \fBnano\fR is run, this syntax will be automatically
 activated if the current filename matches the extended regular
 expression \fIfileregex\fR.  Or the syntax can be explicitly
 activated by using the \fB\-Y\fR or \fB\-\-syntax\fR
 command-line option followed by the \fIname\fR.
-
+.sp
 The syntax \fBdefault\fP is special: it takes no \fIfileregex\fR,
 and applies to files that don't match any syntax's regexes.
 The syntax \fBnone\fP is reserved; specifying it on the command line
@@ -443,11 +506,21 @@ one of which must be specified.  Valid color names are:
 .BR white ", and " black .
 Each of these eight names may be prefixed with the word \fBlight\fR
 to get a brighter version of that color.
+The word \fBgrey\fR or \fBgray\fR may be used
+as a synonym for \fBlightblack\fR.
 On terminal emulators that can do at least 256 colors,
 other valid (but unprefixable) color names are:
 .BR pink ", " purple ", " mauve ", " lagoon ", " mint ", "
-.BR lime ", " peach ", " orange ", " latte ", and " normal
+.BR lime ", " peach ", " orange ", " latte ", "
+.BR rosy ", " beet ", " plum ", " sea ", " sky ", " slate ", "
+.BR teal ", " sage ", " brown ", " ocher ", " sand ", " tawny ", "
+.BR brick ", " crimson ", and " normal
 -- where \fBnormal\fR means the default foreground or background color.
+On such emulators, the color may also be specified as a three-digit hexadecimal
+number prefixed with \fB#\fR, with the digits representing the amounts of red,
+green, and blue, respectively.  This tells \fBnano\fR to select from the
+available palette the color that approximates the given values.
+
 The color pair may be preceded by \fBbold\fR and/or \fBitalic\fR
 (separated by commas) to get a bold and/or slanting typeface,
 if your terminal can do those.
@@ -528,11 +601,10 @@ no longer be the case, for all letters.
 where \fIN\fR is a numeric value from 1 to 24.
 Example: F10.
 (Often, \fBF13\fR to \fBF24\fR can be typed as \fBF1\fR to \fBF12\fR with Shift.)
-
 .TP
 .BR Ins " or " Del .
 .RE
-
+.sp
 Rebinding \fB^M\fR (Enter) or \fB^I\fR (Tab) is probably not a good idea.
 Rebinding \fB^[\fR (Esc) is not possible, because its keycode
 is the starter byte of Meta keystrokes and escape sequences.
@@ -618,15 +690,16 @@ the line, column, and character positions.
 (The old name of this function, 'curpos', is deprecated.)
 .TP
 .B wordcount
-Counts the number of words, lines and characters in the current buffer.
+Counts and reports on the status bar the number of lines, words,
+and characters in the current buffer (or in the marked region).
 .TP
 .B execute
 Prompts for a program to execute.  The program's output will be inserted
 into the current buffer (or into a new buffer when \fBM-F\fR is toggled).
 .TP
 .B speller
-Invokes a spell-checking program, either the default \fBhunspell\fR or GNU
-\fBspell\fR, or the one defined by \fB\-\-speller\fR or \fBset speller\fR.
+Invokes a spell-checking program, either the default \fBhunspell\fR(1) or GNU
+\fBspell\fR(1), or the one defined by \fB\-\-speller\fR or \fBset speller\fR.
 .TP
 .B formatter
 Invokes a full-buffer-processing program (if the active syntax defines one).
@@ -635,27 +708,28 @@ Invokes a full-buffer-processing program (if the active syntax defines one).
 Invokes a syntax-checking program (if the active syntax defines one).
 .TP
 .B justify
-Justifies the current paragraph.  A paragraph is a group of contiguous lines
+Justifies the current paragraph (or the marked region).
+A paragraph is a group of contiguous lines
 that, apart from possibly the first line, all have the same indentation.  The
 beginning of a paragraph is detected by either this lone line with a differing
 indentation or by a preceding blank line.
 .TP
 .B fulljustify
-Justifies the entire current buffer.
+Justifies the entire current buffer (or the marked region).
 .TP
 .B indent
-Indents (shifts to the right) the currently marked text.
+Indents (shifts to the right) the current line or the marked lines.
 .TP
 .B unindent
-Unindents (shifts to the left) the currently marked text.
+Unindents (shifts to the left) the current line or the marked lines.
 .TP
 .B comment
-Comments or uncomments the current line or marked lines, using the comment
-style specified in the active syntax.
+Comments or uncomments the current line or the marked lines,
+using the comment style specified in the active syntax.
 .TP
 .B complete
-Completes the fragment before the cursor to a full word found elsewhere
-in the current buffer.
+Completes (when possible) the fragment before the cursor
+to a full word found elsewhere in the current buffer.
 .TP
 .B left
 Goes left one position (in the editor or browser).
@@ -672,10 +746,15 @@ Goes one line down (in the editor or browser).
 .B scrollup
 Scrolls the viewport up one row (meaning that the text slides down)
 while keeping the cursor in the same text position, if possible.
+(This function is bound by default to <Alt+Up>.
+If <Alt+Up> does nothing on your Linux console, see the FAQ:
+.UR https://nano\-editor.org/dist/latest/faq.html#4.1
+.UE .)
 .TP
 .B scrolldown
 Scrolls the viewport down one row (meaning that the text slides up)
 while keeping the cursor in the same text position, if possible.
+(This function is bound by default to <Alt+Down>.)
 .TP
 .B center
 Scrolls the line with the cursor to the middle of the screen.
@@ -722,11 +801,12 @@ Goes to a specific line (and column if specified).  Negative numbers count
 from the end of the file (and end of the line).
 .TP
 .B findbracket
-Moves the cursor to the bracket (brace, parenthesis, etc.) that matches
-(pairs) with the one under the cursor.
+Moves the cursor to the bracket (or brace or parenthesis, etc.) that matches
+(pairs) with the one under the cursor.  See \fBset matchbrackets\fR.
 .TP
 .B anchor
 Places an anchor at the current line, or removes it when already present.
+(An anchor is visible when line numbers are activated.)
 .TP
 .B prevanchor
 Goes to the first anchor before the current line.
@@ -772,8 +852,8 @@ Redoes the last undone action (i.e., it undoes an undo).
 Refreshes the screen.
 .TP
 .B suspend
-Suspends the editor (if the suspending function is enabled, see the
-\fBsuspendable\fR toggle item below).
+Suspends the editor and returns control to the shell
+(until you tell the process to resume execution with \fBfg\fR).
 .TP
 .B casesens
 Toggles whether searching/replacing ignores or respects the case of
@@ -878,19 +958,15 @@ is the beginning of a paragraph.
 Toggles whether cutting text will cut the whole line or just from the current cursor
 position to the end of the line.
 .TP
-.B nowrap
+.B breaklonglines
 Toggles whether long lines will be hard-wrapped to the next line.
+(The old name of this function, 'nowrap', is deprecated.)
 .TP
 .B tabstospaces
 Toggles whether typed tabs will be converted to spaces.
 .TP
 .B mouse
 Toggles mouse support.
-.TP
-.B suspendable
-Toggles whether the suspend keystroke (\fB^Z\fR by default)
-will actually suspend the editor.
-(The old name of this function, 'suspendenable', is deprecated.)
 .RE
 
 .TP
@@ -959,6 +1035,13 @@ System-wide configuration file.
 .TP
 .IR ~/.nanorc " or " $XDG_CONFIG_HOME/nano/nanorc " or " ~/.config/nano/nanorc
 Per-user configuration file.
+.TP
+.I /usr/share/nano/*
+Syntax definitions for the syntax coloring of common file types
+(and for less common file types in the \fIextra/\fR subdirectory).
 
 .SH SEE ALSO
 .BR nano (1)
+.TP
+.I https://nano-editor.org/cheatsheet.html
+An overview of the default key bindings.

doc/rnano.1

@@ -1,4 +1,4 @@
-.\" Copyright (C) 2002-2007, 2014-2020 Free Software Foundation, Inc.
+.\" Copyright (C) 2002-2007, 2014-2021 Free Software Foundation, Inc.
 .\"
 .\" This document is dual-licensed.  You may distribute and/or modify it
 .\" under the terms of either of the following licenses:
@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH RNANO 1 "version 5.0" "July 2020"
+.TH RNANO 1 "version 6.0" "December 2021"
 
 .SH NAME
 rnano \- a restricted nano

doc/sample.nanorc.in

@@ -44,8 +44,7 @@
 ## Do case-sensitive searches by default.
 # set casesensitive
 
-## Constantly display the cursor position in the status bar.  Note that
-## this overrides "quickblank".
+## Constantly display the cursor position in the status bar or minibar.
 # set constantshow
 
 ## Use cut-from-cursor-to-end-of-line by default.
@@ -68,7 +67,7 @@
 ## Scroll the buffer contents per half-screen instead of per line.
 # set jumpyscrolling
 
-## Display line numbers to the left of the text.
+## Display line numbers to the left (and any anchors in the margin).
 # set linenumbers
 
 ## Enable vim-style lock-files.  This is just to let a vim user know you
@@ -76,15 +75,22 @@
 ## no plans to implement vim-style undo state in these files.
 # set locking
 
-## The opening and closing brackets that can be found by bracket
-## searches.  They cannot contain blank characters.  The former set must
-## come before the latter set, and both must be in the same order.
+## Fall back to slow libmagic to try and determine an applicable syntax.
+# set magic
+
+## The opening and closing brackets that are found by a matching-bracket
+## search.  This may not contain blank characters.  The opening brackets
+## must come before the closing ones, and they must be in the same order.
 # set matchbrackets "(<[{)>]}"
 
+## Suppress the title bar and show the filename plus a cursor-position
+## percentage in the space of the status bar.
+# set minibar
+
 ## Enable mouse support, if available for your system.  When enabled,
 ## mouse clicks can be used to place the cursor, set the mark (with a
-## double click), and execute shortcuts.  The mouse will work in the X
-## Window System, and on the console when gpm is running.
+## double click), and execute shortcuts.  The mouse will work in the
+## X Window System, and on the console when gpm is running.
 # set mouse
 
 ## Switch on multiple file buffers (inserting a file will put it into
@@ -112,14 +118,12 @@
 ## Preserve the XON and XOFF keys (^Q and ^S).
 # set preserve
 
-## The characters treated as closing punctuation when justifying
-## paragraphs.  They cannot contain blank characters.  Only closing
-## punctuation, optionally followed by closing brackets, can end
-## sentences.
+## The characters treated as closing punctuation when justifying paragraphs.
+## This may not contain blank characters.  Only these closing punctuations,
+## optionally followed by closing brackets, can end sentences.
 # set punct "!.?"
 
-## Do quick status-bar blanking.  Status-bar messages will disappear after
-## 1 keystroke instead of 26.  Note that "constantshow" overrides this.
+## Make status-bar messages disappear after 1 keystroke instead of after 20.
 # set quickblank
 
 ## The regular expression that matches quoting characters in email
@@ -140,16 +144,16 @@
 # set saveonexit
 ## (The old form of this option, 'set tempfile', is deprecated.)
 
-## Put the cursor on the highlighted item in the file browser, and show
-## the cursor in the help viewer; useful for people who use a braille
-## display and people with poor vision.
+## Put the cursor on the highlighted item in the file browser, and
+## show the cursor in the help viewer; useful for people who use a
+## braille display and people with poor vision.
 # set showcursor
 
-## Make the Home key smarter.  When Home is pressed anywhere but at the
+## Make the Home key smarter: when Home is pressed anywhere but at the
 ## very beginning of non-whitespace characters on a line, the cursor
 ## will jump to that beginning (either forwards or backwards).  If the
-## cursor is already at that position, it will jump to the true
-## beginning of the line.
+## cursor is already at that position, it will jump to the true start
+## of the line (the left edge).
 # set smarthome
 
 ## Spread overlong lines over multiple screen lines.
@@ -159,22 +163,19 @@
 ## does not have a default value.
 # set speller "aspell -x -c"
 
-## Allow nano to be suspended (with ^Z by default).
-# set suspendable
-## (The old form of this option, 'set suspend', is deprecated.)
+## Use the end of the title bar for some state flags: I = auto-indenting,
+## M = mark, L = hard-wrapping long lines, R = recording, S = soft-wrapping.
+# set stateflags
 
 ## Use this tab size instead of the default; it must be greater than 0.
 # set tabsize 8
 
-## Convert typed tabs to spaces.
+## Convert each typed tab to the fitting number of spaces.
 # set tabstospaces
 
 ## Snip whitespace at the end of lines when justifying or hard-wrapping.
 # set trimblanks
 
-## Disallow file modification.  Why would you want this in an rcfile? ;)
-# set view
-
 ## The two single-column characters used to display the first characters
 ## of tabs and spaces.  187 in ISO 8859-1 (0000BB in Unicode) and 183 in
 ## ISO-8859-1 (0000B7 in Unicode) seem to be good values for these.
@@ -196,22 +197,33 @@
 ## of a single character, and without affecting the cutbuffer).
 # set zap
 
-## Paint the interface elements of nano.  These are examples;
-## by default there are no colors, except for errorcolor.
-# set titlecolor bold,lightwhite,blue
-# set statuscolor bold,lightwhite,green
-# set errorcolor bold,lightwhite,red
+## Hide the bars plus help lines and use the whole terminal as edit area.
+# set zero
+
+
+## Paint the interface elements of nano.  These are examples; there are
+## no colors by default, except for errorcolor and spotlightcolor.
+# set titlecolor bold,white,blue
+# set promptcolor lightwhite,grey
+# set statuscolor bold,white,green
+# set errorcolor bold,white,red
+# set spotlightcolor black,lightyellow
 # set selectedcolor lightwhite,magenta
 # set stripecolor ,yellow
+# set scrollercolor cyan
 # set numbercolor cyan
 # set keycolor cyan
 # set functioncolor green
+
 ## In root's .nanorc you might want to use:
-# set titlecolor bold,lightwhite,magenta
-# set statuscolor bold,lightwhite,magenta
-# set errorcolor bold,lightwhite,red
+# set titlecolor bold,white,magenta
+# set promptcolor black,yellow
+# set statuscolor bold,white,magenta
+# set errorcolor bold,white,red
+# set spotlightcolor black,orange
 # set selectedcolor lightwhite,cyan
 # set stripecolor ,yellow
+# set scrollercolor magenta
 # set numbercolor magenta
 # set keycolor lightmagenta
 # set functioncolor magenta
@@ -220,7 +232,7 @@
 ## === Syntax coloring ===
 ## For all details, see 'man nanorc', section SYNTAX HIGHLIGHTING.
 
-## To include all existing syntax definitions, you can do:
+## To include most of the existing syntax definitions, you can do:
 # include "@PKGDATADIR@/*.nanorc"
 
 ## Or you can select just the ones you need.  For example:
@@ -229,7 +241,8 @@
 # include "@PKGDATADIR@/sh.nanorc"
 
 ## In @PKGDATADIR@/extra/ you can find some syntaxes that are
-## specific for certain distros or for less common languages.
+## specific for certain distros or for some less common languages.
+
 
 ## If <Tab> should always produce four spaces when editing a Python file,
 ## independent of the settings of 'tabsize' and 'tabstospaces':
@@ -242,6 +255,9 @@
 ## === Key bindings ===
 ## For all details, see 'man nanorc', section REBINDING KEYS.
 
+## If you want to suspend nano with one keystroke (instead of with ^T^Z):
+# bind ^Z suspend main
+
 ## The <Ctrl+Delete> keystroke deletes the word to the right of the cursor.
 ## On some terminals the <Ctrl+Backspace> keystroke produces ^H, which is
 ## the ASCII character for backspace, so it is bound by default to the
@@ -251,6 +267,23 @@
 ## <Ctrl+Backspace> delete the word to the left of the cursor with:
 # bind ^H chopwordleft main
 
+## For a more mnemonic Comment keystroke (overriding Cut-from-cursor):
+# bind M-K comment main
+
+## If you want ^L to just refresh the screen and not center the cursor:
+# bind ^L refresh main
+
+## When you sometimes type M-J instead of M-K, or M-T instead of M-R:
+# unbind M-J main
+# unbind M-T main
+## (Those functions are still accessible through ^T^J and ^T^V.)
+
+## For quickly uppercasing or lowercasing the word under the cursor.
+## (These effectively do a Ctrl+Right followed by a Shift+Ctrl+Left,
+## and then pipe the selected text through a sed command.)
+# bind Sh-M-U "Oc|sed 's/.*/\U&/'
+" main
+# bind Sh-M-L "Oc|sed 's/.*/\L&/'
 " main
 
 ## If you would like nano to have keybindings that are more "usual",
@@ -265,11 +298,11 @@
 #bind ^F whereis all
 #bind ^G findnext all
 #bind ^B wherewas all
-#bind M-X flipnewbuffer all
-#bind ^X cut all
+#bind ^D findprevious all
 #bind ^R replace main
 #bind ^X cut main
 #bind ^C copy main
+#bind ^V paste all
 #bind ^P location main
 #bind ^E execute main
 #bind ^A mark main
@@ -279,9 +312,10 @@
 #unbind ^Y all
 #unbind M-J main
 #unbind M-T main
-#bind ^Y speller main
+#bind ^T gotoline main
+#bind ^T gotodir browser
 #bind ^T cutrestoffile execute
 #bind ^L linter execute
-#bind ^U undo main
-#bind ^E redo main
+#bind M-U undo main
+#bind M-R redo main
 #bind ^Z undo main

po/LINGUAS

@@ -1,2 +1,2 @@
 # List of available languages.
-bg ca cs da de eo es eu fi fr ga gl hr hu id it ja ko ms nb nl nn pl pt pt_BR ro ru sl sr sv tr uk vi zh_CN zh_TW
+bg ca cs da de eo es eu fi fr ga gl hr hu id is it ja ko ms nb nl pl pt pt_BR ro ru sk sl sr sv tr uk vi zh_CN zh_TW

po/update_linguas.sh

@@ -9,6 +9,9 @@ rm *.po
 wget --recursive --level=1 --accept=po --no-directories --no-verbose \
        https://translationproject.org/latest/nano/  ||  exit 2
 
+# This PO file is less than twenty percent translated:
+rm -v  nn.po
+
 # Are there now PO files that are not in git yet?
 NEWSTUFF=$(git status --porcelain *.po | grep "^??")
 
@@ -26,6 +29,11 @@ for pofile in *.po; do
 	msgattrib --no-obsolete --no-fuzzy $pofile >trimmed.po || exit 4
 	mv trimmed.po $pofile || exit 4
 done
+echo
+
+if grep "[[:cntrl:]]" ./*.po; then
+	echo "*** PO file contains control character"; exit 5;
+fi
 
 # If needed, fix a problem in the Makefile template.
 grep -q '^datarootdir' Makefile.in.in || \

roll-a-release.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION="5.0"
+VERSION="6.0"
 
 ./configure -C --enable-tiny &&  make &&  ./configure -C &&
 
@@ -12,7 +12,7 @@ po/update_linguas.sh &&
 
 make distcheck &&  make dist-xz &&
 
-git add po/*.po po/nano.pot &&
+git add po/*.po po/nano.pot po/LINGUAS &&
 git commit -m "$(git log -1 --grep 'po: up' | grep o: | sed 's/^    //')" &&
 
 gpg -a -b nano-$VERSION.tar.gz &&

src/Makefile.am

@@ -6,7 +6,7 @@ CLEANFILES = revision.h
 if BUILDING_FROM_GIT
 SOMETHING = "REVISION \"`git describe --tags 2>/dev/null`\""
 else
-SOMETHING = "NOTHING \"from tarball\""
+SOMETHING = "PLAINBUILD \"from tarball\""
 endif
 
 nano.o: revision.h

src/chars.c

@@ -1,8 +1,8 @@
 /**************************************************************************
  *   chars.c  --  This file is part of GNU nano.                          *
  *                                                                        *
- *   Copyright (C) 2001-2011, 2013-2020 Free Software Foundation, Inc.    *
- *   Copyright (C) 2016-2019 Benno Schulenberg                            *
+ *   Copyright (C) 2001-2011, 2013-2021 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2016-2021 Benno Schulenberg                            *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -51,7 +51,7 @@ bool is_alpha_char(const char *c)
 #ifdef ENABLE_UTF8
 	wchar_t wc;
 
-	if (mbtowc(&wc, c, MAXCHARLEN) < 0)
+	if (mbtowide(&wc, c) < 0)
 		return FALSE;
 
 	return iswalpha(wc);
@@ -67,7 +67,7 @@ bool is_alnum_char(const char *c)
 #ifdef ENABLE_UTF8
 	wchar_t wc;
 
-	if (mbtowc(&wc, c, MAXCHARLEN) < 0)
+	if (mbtowide(&wc, c) < 0)
 		return FALSE;
 
 	return iswalnum(wc);
@@ -85,7 +85,7 @@ bool is_blank_char(const char *c)
 	if ((signed char)*c >= 0)
 		return (*c == ' ' || *c == '\t');
 
-	if (mbtowc(&wc, c, MAXCHARLEN) < 0)
+	if (mbtowide(&wc, c) < 0)
 		return FALSE;
 
 	return iswblank(wc);
@@ -112,7 +112,7 @@ bool is_punct_char(const char *c)
 #ifdef ENABLE_UTF8
 	wchar_t wc;
 
-	if (mbtowc(&wc, c, MAXCHARLEN) < 0)
+	if (mbtowide(&wc, c) < 0)
 		return FALSE;
 
 	return iswpunct(wc);
@@ -176,56 +176,123 @@ char control_mbrep(const char *c, bool isdata)
 }
 
 #ifdef ENABLE_UTF8
-/* Return the width in columns of the given (multibyte) character. */
-int mbwidth(const char *c)
+/* Convert the given multibyte sequence c to wide character wc, and return
+ * the number of bytes in the sequence, or -1 for an invalid sequence. */
+int mbtowide(wchar_t *wc, const char *c)
 {
-	/* Ask for the width only when the character isn't plain ASCII. */
-	if ((signed char)*c <= 0) {
-		wchar_t wc;
-		int width;
+	if ((signed char)*c < 0 && use_utf8) {
+		unsigned char v1 = (unsigned char)c[0];
+		unsigned char v2 = (unsigned char)c[1] ^ 0x80;
 
-		if (mbtowc(&wc, c, MAXCHARLEN) < 0)
-			return 1;
+		if (v2 > 0x3F || v1 < 0xC2)
+			return -1;
 
-		width = wcwidth(wc);
+		if (v1 < 0xE0) {
+			*wc = (((unsigned int)(v1 & 0x1F) << 6) | (unsigned int)v2);
+			return 2;
+		}
 
-		if (width < 0)
-			return 1;
+		unsigned char v3 = (unsigned char)c[2] ^ 0x80;
 
-		return width;
-	} else
-		return 1;
-}
+		if (v3 > 0x3F)
+			return -1;
 
-/* Convert the given Unicode value to a multibyte character, if possible.
- * If the conversion succeeds, return the (dynamically allocated) multibyte
- * character and its length.  Otherwise, return a length of zero. */
-char *make_mbchar(long code, int *length)
-{
-	char *mb_char = charalloc(MAXCHARLEN);
+		if (v1 < 0xF0) {
+			if ((v1 > 0xE0 || v2 >= 0x20) && (v1 != 0xED || v2 < 0x20)) {
+				*wc = (((unsigned int)(v1 & 0x0F) << 12) |
+							((unsigned int)v2 << 6) | (unsigned int)v3);
+				return 3;
+			} else
+				return -1;
+		}
 
-	*length = wctomb(mb_char, (wchar_t)code);
+		unsigned char v4 = (unsigned char)c[3] ^ 0x80;
 
-	/* Reject invalid Unicode characters. */
-	if (*length < 0 || !is_valid_unicode((wchar_t)code)) {
-		IGNORE_CALL_RESULT(wctomb(NULL, 0));
-		*length = 0;
+		if (v4 > 0x3F || v1 > 0xF4)
+			return -1;
+
+		if ((v1 > 0xF0 || v2 >= 0x10) && (v1 != 0xF4 || v2 < 0x10)) {
+			*wc = (((unsigned int)(v1 & 0x07) << 18) | ((unsigned int)v2 << 12) |
+							((unsigned int)v3 << 6) | (unsigned int)v4);
+			return 4;
+		} else
+			return -1;
 	}
 
-	return mb_char;
+	*wc = (unsigned int)*c;
+	return 1;
+}
+
+/* Return TRUE when the given character occupies two cells. */
+bool is_doublewidth(const char *ch)
+{
+	wchar_t wc;
+
+	/* Only from U+1100 can code points have double width. */
+	if ((unsigned char)*ch < 0xE1 || !use_utf8)
+		return FALSE;
+
+	if (mbtowide(&wc, ch) < 0)
+		return FALSE;
+
+	return (wcwidth(wc) == 2);
+}
+
+/* Return TRUE when the given character occupies zero cells. */
+bool is_zerowidth(const char *ch)
+{
+	wchar_t wc;
+
+	/* Only from U+0300 can code points have zero width. */
+	if ((unsigned char)*ch < 0xCC || !use_utf8)
+		return FALSE;
+
+	if (mbtowide(&wc, ch) < 0)
+		return FALSE;
+
+#if defined(__OpenBSD__)
+	/* Work around an OpenBSD bug -- see https://sv.gnu.org/bugs/?60393. */
+	if (wc >= 0xF0000)
+		return FALSE;
+#endif
+
+	return (wcwidth(wc) == 0);
 }
 #endif /* ENABLE_UTF8 */
 
-/* Return the length (in bytes) of the character located at *pointer. */
+/* Return the number of bytes in the character that starts at *pointer. */
 int char_length(const char *pointer)
 {
 #ifdef ENABLE_UTF8
-	/* If possibly a multibyte character, get its length; otherwise, it's 1. */
-	if ((signed char)*pointer < 0) {
-		int length = mblen(pointer, MAXCHARLEN);
+	if ((unsigned char)*pointer > 0xC1 && use_utf8) {
+		unsigned char c1 = (unsigned char)pointer[0];
+		unsigned char c2 = (unsigned char)pointer[1];
 
-		return (length < 0 ? 1 : length);
-	} else
+		if ((c2 ^ 0x80) > 0x3F)
+			return 1;
+
+		if (c1 < 0xE0)
+			return 2;
+
+		if (((unsigned char)pointer[2] ^ 0x80) > 0x3F)
+			return 1;
+
+		if (c1 < 0xF0) {
+			if ((c1 > 0xE0 || c2 >= 0xA0) && (c1 != 0xED || c2 < 0xA0))
+				return 3;
+			else
+				return 1;
+		}
+
+		if (((unsigned char)pointer[3] ^ 0x80) > 0x3F)
+			return 1;
+
+		if (c1 > 0xF4)
+			return 1;
+
+		if ((c1 > 0xF0 || c2 >= 0x90) && (c1 != 0xF4 || c2 < 0x90))
+			return 4;
+	}
 #endif
 		return 1;
 }
@@ -236,15 +303,7 @@ size_t mbstrlen(const char *pointer)
 	size_t count = 0;
 
 	while (*pointer != '\0') {
-#ifdef ENABLE_UTF8
-		if ((signed char)*pointer < 0) {
-			int length = mblen(pointer, MAXCHARLEN);
-
-			pointer += (length < 0 ? 1 : length);
-		} else
-#endif
-			pointer++;
-
+		pointer += char_length(pointer);
 		count++;
 	}
 
@@ -255,19 +314,7 @@ size_t mbstrlen(const char *pointer)
  * given string, and return a copy of this character in *thechar. */
 int collect_char(const char *string, char *thechar)
 {
-	int charlen;
-
-#ifdef ENABLE_UTF8
-	/* If this is a UTF-8 starter byte, get the number of bytes of the character. */
-	if ((signed char)*string < 0) {
-		charlen = mblen(string, MAXCHARLEN);
-
-		/* When the multibyte sequence is invalid, only take the first byte. */
-		if (charlen <= 0)
-			charlen = 1;
-	} else
-#endif
-		charlen = 1;
+	int charlen = char_length(string);
 
 	for (int i = 0; i < charlen; i++)
 		thechar[i] = string[i];
@@ -280,20 +327,29 @@ int collect_char(const char *string, char *thechar)
 int advance_over(const char *string, size_t *column)
 {
 #ifdef ENABLE_UTF8
-	if ((signed char)*string < 0) {
-		int charlen = mblen(string, MAXCHARLEN);
-
-		if (charlen > 0) {
-			if (is_cntrl_char(string))
-				*column += 2;
-			else
-				*column += mbwidth(string);
+	if ((signed char)*string < 0 && use_utf8) {
+		/* A UTF-8 upper control code has two bytes and takes two columns. */
+		if (((unsigned char)string[0] == 0xC2 && (signed char)string[1] < -96)) {
+			*column += 2;
+			return 2;
 		} else {
-			charlen = 1;
-			*column += 1;
-		}
+			wchar_t wc;
+			int charlen = mbtowide(&wc, string);
 
-		return charlen;
+			if (charlen < 0) {
+				*column += 1;
+				return 1;
+			}
+
+			int width = wcwidth(wc);
+
+#if defined(__OpenBSD__)
+			*column += (width < 0 || wc >= 0xF0000) ? 1 : width;
+#else
+			*column += (width < 0) ? 1 : width;
+#endif
+			return charlen;
+		}
 	}
 #endif
 
@@ -302,12 +358,8 @@ int advance_over(const char *string, size_t *column)
 			*column += tabsize - *column % tabsize;
 		else
 			*column += 2;
-	} else if (*string == 0x7F)
+	} else if (0x7E < (unsigned char)*string && (unsigned char)*string < 0xA0)
 		*column += 2;
-#ifndef ENABLE_UTF8
-	else if (0x7F < (unsigned char)*string && (unsigned char)*string < 0xA0)
-		*column += 2;
-#endif
 	else
 		*column += 1;
 
@@ -374,8 +426,24 @@ int mbstrncasecmp(const char *s1, const char *s2, size_t n)
 		wchar_t wc1, wc2;
 
 		while (*s1 != '\0' && *s2 != '\0' && n > 0) {
-			bool bad1 = (mbtowc(&wc1, s1, MAXCHARLEN) < 0);
-			bool bad2 = (mbtowc(&wc2, s2, MAXCHARLEN) < 0);
+			if ((signed char)*s1 >= 0 && (signed char)*s2 >= 0) {
+				if ('A' <= (*s1 & 0x5F) && (*s1 & 0x5F) <= 'Z') {
+					if ('A' <= (*s2 & 0x5F) && (*s2 & 0x5F) <= 'Z') {
+						if ((*s1 & 0x5F) != (*s2 & 0x5F))
+							return ((*s1 & 0x5F) - (*s2 & 0x5F));
+					} else
+						return ((*s1 | 0x20) - *s2);
+				} else if ('A' <= (*s2 & 0x5F) && (*s2 & 0x5F) <= 'Z')
+					return (*s1 - (*s2 | 0x20));
+				else if (*s1 != *s2)
+					return (*s1 - *s2);
+
+				s1++; s2++; n--;
+				continue;
+			}
+
+			bool bad1 = (mbtowide(&wc1, s1) < 0);
+			bool bad2 = (mbtowide(&wc2, s2) < 0);
 
 			if (bad1 || bad2) {
 				if (*s1 != *s2)
@@ -430,7 +498,7 @@ char *revstrstr(const char *haystack, const char *needle,
 	size_t tail_len = strlen(pointer);
 
 	if (tail_len < needle_len)
-		pointer += tail_len - needle_len;
+		pointer -= (needle_len - tail_len);
 
 	while (pointer >= haystack) {
 		if (strncmp(pointer, needle, needle_len) == 0)
@@ -450,7 +518,7 @@ char *revstrcasestr(const char *haystack, const char *needle,
 	size_t tail_len = strlen(pointer);
 
 	if (tail_len < needle_len)
-		pointer += tail_len - needle_len;
+		pointer -= (needle_len - tail_len);
 
 	while (pointer >= haystack) {
 		if (strncasecmp(pointer, needle, needle_len) == 0)
@@ -472,7 +540,7 @@ char *mbrevstrcasestr(const char *haystack, const char *needle,
 		size_t tail_len = mbstrlen(pointer);
 
 		if (tail_len < needle_len)
-			pointer += tail_len - needle_len;
+			pointer -= (needle_len - tail_len);
 
 		if (pointer < haystack)
 			return NULL;
@@ -500,13 +568,13 @@ char *mbstrchr(const char *string, const char *chr)
 		bool bad_s = FALSE, bad_c = FALSE;
 		wchar_t ws, wc;
 
-		if (mbtowc(&wc, chr, MAXCHARLEN) < 0) {
+		if (mbtowide(&wc, chr) < 0) {
 			wc = (unsigned char)*chr;
 			bad_c = TRUE;
 		}
 
 		while (*string != '\0') {
-			int symlen = mbtowc(&ws, string, MAXCHARLEN);
+			int symlen = mbtowide(&ws, string);
 
 			if (symlen < 0) {
 				ws = (unsigned char)*string;
@@ -568,22 +636,15 @@ char *mbrevstrpbrk(const char *head, const char *accept, const char *pointer)
 #endif /* !NANO_TINY */
 
 #if defined(ENABLE_NANORC) && (!defined(NANO_TINY) || defined(ENABLE_JUSTIFY))
-/* Return TRUE if the given string contains at least one blank character,
- * and FALSE otherwise. */
+/* Return TRUE if the given string contains at least one blank character. */
 bool has_blank_char(const char *string)
 {
-	char symbol[MAXCHARLEN];
+	while (*string != '\0' && !is_blank_char(string))
+		string += char_length(string);
 
-	while (*string != '\0') {
-		string += collect_char(string, symbol);
-
-		if (is_blank_char(symbol))
-			return TRUE;
-	}
-
-	return FALSE;
+	return *string;
 }
-#endif /* ENABLE_NANORC && (!NANO_TINY || ENABLE_JUSTIFY) */
+#endif
 
 /* Return TRUE when the given string is empty or consists of only blanks. */
 bool white_string(const char *string)
@@ -593,14 +654,3 @@ bool white_string(const char *string)
 
 	return !*string;
 }
-
-#ifdef ENABLE_UTF8
-/* Return TRUE if wc is valid Unicode, and FALSE otherwise. */
-bool is_valid_unicode(wchar_t wc)
-{
-	return ((0 <= wc && wc <= 0xD7FF) ||
-				(0xE000 <= wc && wc <= 0xFDCF) ||
-				(0xFDF0 <= wc && wc <= 0xFFFD) ||
-				(0xFFFF < wc && wc <= 0x10FFFF && (wc & 0xFFFF) <= 0xFFFD));
-}
-#endif

src/color.c

@@ -1,8 +1,8 @@
 /**************************************************************************
  *   color.c  --  This file is part of GNU nano.                          *
  *                                                                        *
- *   Copyright (C) 2001-2011, 2013-2020 Free Software Foundation, Inc.    *
- *   Copyright (C) 2014-2017 Benno Schulenberg                            *
+ *   Copyright (C) 2001-2011, 2013-2021 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2014-2017, 2020, 2021 Benno Schulenberg                *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -29,15 +29,6 @@
 #endif
 #include <string.h>
 
-/* For early versions of ncurses-6.0, use an additional A_PROTECT attribute
- * for all colors, in order to work around an ncurses miscoloring bug. */
-#if defined(NCURSES_VERSION_MAJOR) && (NCURSES_VERSION_MAJOR == 6) && \
-		(NCURSES_VERSION_MINOR == 0) && (NCURSES_VERSION_PATCH < 20151017)
-#define A_BANDAID  A_PROTECT
-#else
-#define A_BANDAID  A_NORMAL
-#endif
-
 static bool defaults_allowed = FALSE;
 		/* Whether ncurses accepts -1 to mean "default color". */
 
@@ -61,17 +52,20 @@ void set_interface_colorpairs(void)
 					combo->bg = COLOR_BLACK;
 			}
 			init_pair(index + 1, combo->fg, combo->bg);
-			interface_color_pair[index] = COLOR_PAIR(index + 1) | A_BANDAID |
-												combo->attributes;
+			interface_color_pair[index] = COLOR_PAIR(index + 1) | combo->attributes;
 		} else {
-			if (index == FUNCTION_TAG)
+			if (index == FUNCTION_TAG || index == SCROLL_BAR)
 				interface_color_pair[index] = A_NORMAL;
 			else if (index == GUIDE_STRIPE)
 				interface_color_pair[index] = A_REVERSE;
+			else if (index == SPOTLIGHTED) {
+				init_pair(index + 1, COLOR_BLACK, COLOR_YELLOW + (COLORS > 15 ? 8 : 0));
+				interface_color_pair[index] = COLOR_PAIR(index + 1);
+			} else if (index == MINI_INFOBAR || index == PROMPT_BAR)
+				interface_color_pair[index] = interface_color_pair[TITLE_BAR];
 			else if (index == ERROR_MESSAGE) {
 				init_pair(index + 1, COLOR_WHITE, COLOR_RED);
-				interface_color_pair[index] = COLOR_PAIR(index + 1) |
-												A_BOLD | A_BANDAID;
+				interface_color_pair[index] = COLOR_PAIR(index + 1) | A_BOLD;
 			} else
 				interface_color_pair[index] = hilite_attribute;
 		}
@@ -102,7 +96,7 @@ void set_syntax_colorpairs(syntaxtype *sntx)
 
 		ink->pairnum = (older != ink) ? older->pairnum : ++number;
 
-		ink->attributes |= COLOR_PAIR(ink->pairnum) | A_BANDAID;
+		ink->attributes |= COLOR_PAIR(ink->pairnum);
 	}
 }
 
@@ -125,19 +119,9 @@ void prepare_palette(void)
  * the list starting at head.  Return TRUE upon success. */
 bool found_in_list(regexlisttype *head, const char *shibboleth)
 {
-	regexlisttype *item;
-	regex_t rgx;
-
-	for (item = head; item != NULL; item = item->next) {
-		regcomp(&rgx, item->full_regex, NANO_REG_EXTENDED);
-
-		if (regexec(&rgx, shibboleth, 0, NULL, 0) == 0) {
-			regfree(&rgx);
+	for (regexlisttype *item = head; item != NULL; item = item->next)
+		if (regexec(item->one_rgx, shibboleth, 0, NULL, 0) == 0)
 			return TRUE;
-		}
-
-		regfree(&rgx);
-	}
 
 	return FALSE;
 }
@@ -189,8 +173,8 @@ void find_and_prime_applicable_syntax(void)
 	}
 
 #ifdef HAVE_LIBMAGIC
-	/* If we still don't have an answer, try using magic. */
-	if (sntx == NULL && !inhelp) {
+	/* If we still don't have an answer, try using magic (when requested). */
+	if (sntx == NULL && !inhelp && ISSET(USE_MAGIC)) {
 		struct stat fileinfo;
 		magic_t cookie = NULL;
 		const char *magicstring = NULL;
@@ -240,15 +224,6 @@ void find_and_prime_applicable_syntax(void)
 	openfile->syntax = sntx;
 }
 
-/* Allocate and initialize (for the given line) the cache for multiline info. */
-void set_up_multicache(linestruct *line)
-{
-	line->multidata = (short *)nmalloc(openfile->syntax->nmultis * sizeof(short));
-
-	for (short index = 0; index < openfile->syntax->nmultis; index++)
-		line->multidata[index] = -1;
-}
-
 /* Determine whether the matches of multiline regexes are still the same,
  * and if not, schedule a screen refresh, so things will be repainted. */
 void check_the_multis(linestruct *line)
@@ -262,8 +237,10 @@ void check_the_multis(linestruct *line)
 	if (openfile->syntax == NULL || openfile->syntax->nmultis == 0)
 		return;
 
-	if (line->multidata == NULL)
-		set_up_multicache(line);
+	if (line->multidata == NULL) {
+		refresh_needed = TRUE;
+		return;
+	}
 
 	for (ink = openfile->syntax->color; ink != NULL; ink = ink->next) {
 		/* If it's not a multiline regex, skip. */
@@ -275,19 +252,22 @@ void check_the_multis(linestruct *line)
 		anend = (regexec(ink->end, afterstart, 1, &endmatch, 0) == 0);
 
 		/* Check whether the multidata still matches the current situation. */
-		if (line->multidata[ink->id] == CNONE ||
-						line->multidata[ink->id] == CWHOLELINE) {
+		if (line->multidata[ink->id] == NOTHING) {
+			if (!astart)
+				continue;
+		} else if (line->multidata[ink->id] & (WHOLELINE|WOULDBE)) {
 			if (!astart && !anend)
 				continue;
-		} else if (line->multidata[ink->id] == CSTARTENDHERE) {
-			if (astart && anend && startmatch.rm_so < endmatch.rm_so)
+		} else if (line->multidata[ink->id] == JUSTONTHIS) {
+			if (astart && anend && regexec(ink->start, line->data + endmatch.rm_eo,
+														1, &startmatch, 0) != 0)
 				continue;
-		} else if (line->multidata[ink->id] == CBEGINBEFORE) {
-			if (!astart && anend)
-				continue;
-		} else if (line->multidata[ink->id] == CENDAFTER) {
+		} else if (line->multidata[ink->id] == STARTSHERE) {
 			if (astart && !anend)
 				continue;
+		} else if (line->multidata[ink->id] == ENDSHERE) {
+			if (!astart && anend)
+				continue;
 		}
 
 		/* There is a mismatch, so something changed: repaint. */
@@ -304,13 +284,19 @@ void precalc_multicolorinfo(void)
 	regmatch_t startmatch, endmatch;
 	linestruct *line, *tailline;
 
-	if (openfile->syntax == NULL || openfile->syntax->nmultis == 0 ||
-					openfile->filetop->multidata || ISSET(NO_SYNTAX))
+	if (!openfile->syntax || openfile->syntax->nmultis == 0 || ISSET(NO_SYNTAX))
 		return;
 
+//#define TIMEPRECALC  123
+#ifdef TIMEPRECALC
+#include <time.h>
+	clock_t start = clock();
+#endif
+
 	/* For each line, allocate cache space for the multiline-regex info. */
 	for (line = openfile->filetop; line != NULL; line = line->next)
-		set_up_multicache(line);
+		if (!line->multidata)
+			line->multidata = nmalloc(openfile->syntax->nmultis * sizeof(short));
 
 	for (ink = openfile->syntax->color; ink != NULL; ink = ink->next) {
 		/* If this is not a multi-line regex, skip it. */
@@ -321,66 +307,68 @@ void precalc_multicolorinfo(void)
 			int index = 0;
 
 			/* Assume nothing applies until proven otherwise below. */
-			line->multidata[ink->id] = CNONE;
+			line->multidata[ink->id] = NOTHING;
 
-			/* For an unpaired start match, mark all remaining lines. */
-			if (line->prev && line->prev->multidata[ink->id] == CWOULDBE) {
-				line->multidata[ink->id] = CWOULDBE;
-				continue;
-			}
-
-			/* When the line contains a start match, look for an end, and if
-			 * found, mark all the lines that are affected. */
-			while (regexec(ink->start, line->data + index, 1,
-							&startmatch, (index == 0) ? 0 : REG_NOTBOL) == 0) {
+			/* When the line contains a start match, look for an end,
+			 * and if found, mark all the lines that are affected. */
+			while (regexec(ink->start, line->data + index, 1, &startmatch,
+										(index == 0) ? 0 : REG_NOTBOL) == 0) {
 				/* Begin looking for an end match after the start match. */
 				index += startmatch.rm_eo;
 
-				/* If there is an end match on this line, mark the line, but
-				 * continue looking for other starts after it. */
-				if (regexec(ink->end, line->data + index, 1,
-							&endmatch, (index == 0) ? 0 : REG_NOTBOL) == 0) {
-					line->multidata[ink->id] = CSTARTENDHERE;
+				/* If there is an end match on this same line, mark the line,
+				 * but continue looking for other starts after it. */
+				if (regexec(ink->end, line->data + index, 1, &endmatch,
+										(index == 0) ? 0 : REG_NOTBOL) == 0) {
+					line->multidata[ink->id] = JUSTONTHIS;
+
 					index += endmatch.rm_eo;
-					/* If both start and end are mere anchors, step ahead. */
-					if (startmatch.rm_so == startmatch.rm_eo &&
-								endmatch.rm_so == endmatch.rm_eo) {
-						/* When at end-of-line, we're done. */
+
+					/* If the total match has zero length, force an advance. */
+					if (startmatch.rm_eo - startmatch.rm_so + endmatch.rm_eo == 0) {
+						/* When at end-of-line, there is no other start. */
 						if (line->data[index] == '\0')
 							break;
 						index = step_right(line->data, index);
 					}
+
 					continue;
 				}
 
 				/* Look for an end match on later lines. */
 				tailline = line->next;
 
-				while (tailline != NULL) {
-					if (regexec(ink->end, tailline->data, 1, &endmatch, 0) == 0)
-						break;
+				while (tailline && regexec(ink->end, tailline->data,
+											1, &endmatch, 0) != 0)
 					tailline = tailline->next;
-				}
 
+				/* When there is no end match, mark relevant lines as such. */
 				if (tailline == NULL) {
-					line->multidata[ink->id] = CWOULDBE;
+					for (; line->next != NULL; line = line->next)
+						line->multidata[ink->id] = WOULDBE;
+					line->multidata[ink->id] = WOULDBE;
 					break;
 				}
 
-				/* We found it, we found it, la la la la la.  Mark all
-				 * the lines in between and the end properly. */
-				line->multidata[ink->id] = CENDAFTER;
+				/* We found it, we found it, la lala lala.  Mark the lines. */
+				line->multidata[ink->id] = STARTSHERE;
 
+				// Note that this also advances the line in the main loop.
 				for (line = line->next; line != tailline; line = line->next)
-					line->multidata[ink->id] = CWHOLELINE;
+					line->multidata[ink->id] = WHOLELINE;
 
-				tailline->multidata[ink->id] = CBEGINBEFORE;
+				tailline->multidata[ink->id] = ENDSHERE;
 
-				/* Begin looking for a new start after the end match. */
+				/* Look for a possible new start after the end match. */
 				index = endmatch.rm_eo;
 			}
 		}
 	}
+
+#ifdef TIMEPRECALC
+	statusline(INFO, "Precalculation: %.1f ms", 1000 * (double)(clock() - start) / CLOCKS_PER_SEC);
+	napms(1200);
+#endif
 }
 
 #endif /* ENABLE_COLOR */

src/cut.c

@@ -1,9 +1,9 @@
 /**************************************************************************
  *   cut.c  --  This file is part of GNU nano.                            *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2014 Mark Majeres                                      *
- *   Copyright (C) 2016, 2018, 2019 Benno Schulenberg                     *
+ *   Copyright (C) 2016, 2018-2020 Benno Schulenberg                      *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -34,7 +34,7 @@ void do_deletion(undo_type action)
 		int charlen = char_length(openfile->current->data + openfile->current_x);
 		size_t line_len = strlen(openfile->current->data + openfile->current_x);
 #ifndef NANO_TINY
-		size_t old_amount = openfile->current->extrarows;
+		size_t old_amount = ISSET(SOFTWRAP) ? extra_chunks_in(openfile->current) : 0;
 
 		/* If the type of action changed or the cursor moved to a different
 		 * line, create a new undo item, otherwise update the existing item. */
@@ -49,13 +49,9 @@ void do_deletion(undo_type action)
 					&openfile->current->data[openfile->current_x + charlen],
 					line_len - charlen + 1);
 #ifndef NANO_TINY
-		/* When softwrapping, recompute the number of chunks in the line,
-		 * and schedule a refresh if the number changed. */
-		if (ISSET(SOFTWRAP)) {
-			openfile->current->extrarows = extra_chunks_in(openfile->current);
-			if (openfile->current->extrarows != old_amount)
-				refresh_needed = TRUE;
-		}
+		/* When softwrapping, a changed number of chunks requires a refresh. */
+		if (ISSET(SOFTWRAP) && extra_chunks_in(openfile->current) != old_amount)
+			refresh_needed = TRUE;
 
 		/* Adjust the mark if it is after the cursor on the current line. */
 		if (openfile->mark == openfile->current &&
@@ -88,16 +84,12 @@ void do_deletion(undo_type action)
 		openfile->current->has_anchor |= joining->has_anchor;
 #endif
 		/* Add the content of the next line to that of the current one. */
-		openfile->current->data = charealloc(openfile->current->data,
+		openfile->current->data = nrealloc(openfile->current->data,
 				strlen(openfile->current->data) + strlen(joining->data) + 1);
 		strcat(openfile->current->data, joining->data);
 
 		unlink_node(joining);
 
-#ifndef NANO_TINY
-		if (ISSET(SOFTWRAP))
-			openfile->current->extrarows = extra_chunks_in(openfile->current);
-#endif
 		/* Two lines were joined, so do a renumbering and refresh the screen. */
 		renumber_from(openfile->current);
 		refresh_needed = TRUE;
@@ -121,7 +113,14 @@ void do_delete(void)
 		zap_text();
 	else
 #endif
+	{
 		do_deletion(DEL);
+#ifdef ENABLE_UTF8
+		while (openfile->current->data[openfile->current_x] != '\0' &&
+				is_zerowidth(openfile->current->data + openfile->current_x))
+			do_deletion(DEL);
+#endif
+	}
 }
 
 /* Backspace over one character.  That is, move the cursor left one
@@ -133,7 +132,10 @@ void do_backspace(void)
 		zap_text();
 	else
 #endif
-	if (openfile->current_x > 0 || openfile->current != openfile->filetop) {
+	if (openfile->current_x > 0) {
+		openfile->current_x = step_left(openfile->current->data, openfile->current_x);
+		do_deletion(BACK);
+	} else if (openfile->current != openfile->filetop) {
 		do_left();
 		do_deletion(BACK);
 	}
@@ -183,7 +185,7 @@ void chop_word(bool forward)
 	 * on the edge of the original line, then put the cursor on that
 	 * edge instead, so that lines will not be joined unexpectedly. */
 	if (!forward) {
-		do_prev_word(ISSET(WORD_BOUNDS));
+		do_prev_word();
 		if (openfile->current != is_current) {
 			if (is_current_x > 0) {
 				openfile->current = is_current;
@@ -192,7 +194,7 @@ void chop_word(bool forward)
 				openfile->current_x = strlen(openfile->current->data);
 		}
 	} else {
-		do_next_word(ISSET(AFTER_ENDS), ISSET(WORD_BOUNDS));
+		do_next_word(ISSET(AFTER_ENDS));
 		if (openfile->current != is_current &&
 							is_current->data[is_current_x] != '\0') {
 			openfile->current = is_current;
@@ -247,27 +249,29 @@ void extract_segment(linestruct *top, size_t top_x, linestruct *bot, size_t bot_
 	bool same_line = (openfile->mark == top);
 	bool post_marked = (openfile->mark && (openfile->mark->lineno > top->lineno ||
 						(same_line && openfile->mark_x > top_x)));
-	bool was_anchored = top->has_anchor;
+	static bool inherited_anchor = FALSE;
+	bool had_anchor = top->has_anchor;
 
 	if (top == bot && top_x == bot_x)
 		return;
 
 	if (top != bot)
 		for (linestruct *line = top->next; line != bot->next; line = line->next)
-			was_anchored |= line->has_anchor;
+			had_anchor |= line->has_anchor;
 #endif
 
 	if (top == bot) {
 		taken = make_new_node(NULL);
 		taken->data = measured_copy(top->data + top_x, bot_x - top_x);
-		memmove(top->data + top_x, top->data + bot_x,
-										strlen(top->data + bot_x) + 1);
+		memmove(top->data + top_x, top->data + bot_x, strlen(top->data + bot_x) + 1);
 		last = taken;
 	} else if (top_x == 0 && bot_x == 0) {
 		taken = top;
 		last = make_new_node(NULL);
 		last->data = copy_of("");
-
+#ifndef NANO_TINY
+		last->has_anchor = bot->has_anchor;
+#endif
 		last->prev = bot->prev;
 		bot->prev->next = last;
 		last->next = NULL;
@@ -289,7 +293,7 @@ void extract_segment(linestruct *top, size_t top_x, linestruct *bot, size_t bot_
 		if (bot->next)
 			bot->next->prev = top;
 
-		top->data = charealloc(top->data, top_x + strlen(bot->data + bot_x) + 1);
+		top->data = nrealloc(top->data, top_x + strlen(bot->data + bot_x) + 1);
 		strcpy(top->data + top_x, bot->data + bot_x);
 
 		last = bot;
@@ -307,11 +311,17 @@ void extract_segment(linestruct *top, size_t top_x, linestruct *bot, size_t bot_
 	if (cutbuffer == NULL) {
 		cutbuffer = taken;
 		cutbottom = last;
+#ifndef NANO_TINY
+		inherited_anchor = taken->has_anchor;
+#endif
 	} else {
-		cutbottom->data = charealloc(cutbottom->data,
+		cutbottom->data = nrealloc(cutbottom->data,
 							strlen(cutbottom->data) + strlen(taken->data) + 1);
 		strcat(cutbottom->data, taken->data);
-
+#ifndef NANO_TINY
+		cutbottom->has_anchor = taken->has_anchor && !inherited_anchor;
+		inherited_anchor |= taken->has_anchor;
+#endif
 		cutbottom->next = taken->next;
 		delete_node(taken);
 
@@ -324,10 +334,7 @@ void extract_segment(linestruct *top, size_t top_x, linestruct *bot, size_t bot_
 	openfile->current_x = top_x;
 
 #ifndef NANO_TINY
-	openfile->current->has_anchor = was_anchored;
-
-	if (ISSET(SOFTWRAP))
-		openfile->current->extrarows = extra_chunks_in(openfile->current);
+	openfile->current->has_anchor = had_anchor;
 
 	if (post_marked || same_line)
 		openfile->mark = openfile->current;
@@ -375,16 +382,12 @@ void ingraft_buffer(linestruct *topline)
 
 	if (extralen > 0) {
 		/* Insert the text of topline at the current cursor position. */
-		line->data = charealloc(line->data, length + extralen + 1);
+		line->data = nrealloc(line->data, length + extralen + 1);
 		memmove(line->data + xpos + extralen, line->data + xpos, length - xpos + 1);
 		strncpy(line->data + xpos, topline->data, extralen);
 	}
 
 	if (topline != botline) {
-#ifndef NANO_TINY
-		/* First compute the softwrapped chunks for each line in the graft. */
-		compute_the_extra_rows_per_line_from(topline);
-#endif
 		/* When inserting at end-of-buffer, update the relevant pointer. */
 		if (line->next == NULL)
 			openfile->filebot = botline;
@@ -401,7 +404,7 @@ void ingraft_buffer(linestruct *topline)
 		/* Add the text after the cursor position at the end of botline. */
 		length = strlen(botline->data);
 		extralen = strlen(tailtext);
-		botline->data = charealloc(botline->data, length + extralen + 1);
+		botline->data = nrealloc(botline->data, length + extralen + 1);
 		strcpy(botline->data + length, tailtext);
 
 		/* Put the cursor at the end of the grafted text. */
@@ -417,11 +420,6 @@ void ingraft_buffer(linestruct *topline)
 		openfile->mark_x += length - xpos;
 	} else if (mark_follows)
 		openfile->mark_x += extralen;
-
-	if (ISSET(SOFTWRAP)) {
-		line->extrarows = extra_chunks_in(line);
-		openfile->current->extrarows = extra_chunks_in(openfile->current);
-	}
 #endif
 
 	delete_node(topline);
@@ -696,13 +694,18 @@ void copy_text(void)
 /* Copy text from the cutbuffer into the current buffer. */
 void paste_text(void)
 {
+#if defined(ENABLE_WRAPPING) || !defined(NANO_TINY)
+	/* Remember where the paste started. */
+	linestruct *was_current = openfile->current;
+#endif
+#ifndef NANO_TINY
+	bool had_anchor = was_current->has_anchor;
+#endif
 	ssize_t was_lineno = openfile->current->lineno;
-		/* The line number where we started the paste. */
 	size_t was_leftedge = 0;
-		/* The leftedge where we started the paste. */
 
 	if (cutbuffer == NULL) {
-		statusbar(_("Cutbuffer is empty"));
+		statusline(AHEM, _("Cutbuffer is empty"));
 		return;
 	}
 
@@ -718,12 +721,28 @@ void paste_text(void)
 	copy_from_buffer(cutbuffer);
 
 #ifndef NANO_TINY
+	/* Wipe any anchors in the pasted text, so that they don't proliferate. */
+	for (linestruct *line = was_current; line != openfile->current->next; line = line->next)
+		line->has_anchor = FALSE;
+
+	was_current->has_anchor = had_anchor;
+
 	update_undo(PASTE);
 #endif
 
+#ifdef ENABLE_WRAPPING
+	/* When still on the same line and doing hard-wrapping, limit the width. */
+	if (openfile->current == was_current && ISSET(BREAK_LONG_LINES))
+		do_wrap();
+#endif
+
 	/* If we pasted less than a screenful, don't center the cursor. */
 	if (less_than_a_screenful(was_lineno, was_leftedge))
 		focusing = FALSE;
+#ifdef ENABLE_COLOR
+	else
+		precalc_multicolorinfo();
+#endif
 
 	/* Set the desired x position to where the pasted text ends. */
 	openfile->placewewant = xplustabs();

src/definitions.h

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   definitions.h  --  This file is part of GNU nano.                    *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2014-2017 Benno Schulenberg                            *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
@@ -29,6 +29,10 @@
 #endif
 #endif
 
+#if defined(__HAIKU__) && !defined(_DEFAULT_SOURCE)
+#define _DEFAULT_SOURCE  1
+#endif
+
 #ifdef __TANDEM
 /* Tandem NonStop Kernel support. */
 #include <floss.h>
@@ -41,10 +45,55 @@
 #include <limits.h>
 #endif
 
+/* Set a default value for PATH_MAX if there isn't one. */
+#ifndef PATH_MAX
+#define PATH_MAX  4096
+#endif
+
 #ifdef HAVE_SYS_PARAM_H
 #include <sys/param.h>
 #endif
 
+#include <dirent.h>
+#include <regex.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+/* Prefer wide ncurses over normal ncurses over curses. */
+#if defined(HAVE_NCURSESW_NCURSES_H)
+#include <ncursesw/ncurses.h>
+#elif defined(HAVE_NCURSES_H)
+#include <ncurses.h>
+#else
+#include <curses.h>
+#endif
+
+/* Native language support. */
+#ifdef ENABLE_NLS
+#ifdef HAVE_LIBINTL_H
+#include <libintl.h>
+#endif
+#define _(string)  gettext(string)
+#define P_(singular, plural, number)  ngettext(singular, plural, number)
+#else
+#define _(string)  (string)
+#define P_(singular, plural, number)  (number == 1 ? singular : plural)
+#endif
+/* For marking a string on which gettext() will be called later. */
+#define gettext_noop(string)  (string)
+#define N_(string)  gettext_noop(string)
+
+/* If we aren't using an ncurses with mouse support, then
+ * exclude the mouse routines, as they are useless then. */
+#ifndef NCURSES_MOUSE_VERSION
+#undef ENABLE_MOUSE
+#endif
+
+#if defined(ENABLE_WRAPPING) || defined(ENABLE_JUSTIFY)
+#define ENABLED_WRAPORJUSTIFY  1
+#endif
+
 /* Suppress warnings for __attribute__((warn_unused_result)). */
 #define IGNORE_CALL_RESULT(call)  do { if (call) {} } while(0)
 
@@ -56,74 +105,6 @@
 #define ISSET(flag)  ((FLAGS(flag) & FLAGMASK(flag)) != 0)
 #define TOGGLE(flag)  FLAGS(flag) ^= FLAGMASK(flag)
 
-/* Macros for allocation of character strings. */
-#define charalloc(howmuch)  (char *)nmalloc(howmuch)
-#define charealloc(ptr, howmuch)  (char *)nrealloc(ptr, howmuch)
-
-/* In UTF-8 a character is at most six bytes long. */
-#ifdef ENABLE_UTF8
-#define MAXCHARLEN  6
-#else
-#define MAXCHARLEN  1
-#endif
-
-/* Set a default value for PATH_MAX if there isn't one. */
-#ifndef PATH_MAX
-#define PATH_MAX  4096
-#endif
-
-#ifdef USE_SLANG
-/* Slang support. */
-#include <slcurses.h>
-/* Slang curses emulation brain damage, part 3: Slang doesn't define the
- * curses equivalents of the Insert or Delete keys. */
-#define KEY_DC  SL_KEY_DELETE
-#define KEY_IC  SL_KEY_IC
-/* Ncurses support. */
-#elif defined(HAVE_NCURSESW_NCURSES_H)
-#include <ncursesw/ncurses.h>
-#elif defined(HAVE_NCURSES_H)
-#include <ncurses.h>
-#else
-/* Curses support. */
-#include <curses.h>
-#endif /* CURSES_H */
-
-#if defined(NCURSES_VERSION_MAJOR) && (NCURSES_VERSION_MAJOR < 6)
-#define USING_OLD_NCURSES  yes
-#endif
-
-#ifdef ENABLE_NLS
-/* Native language support. */
-#ifdef HAVE_LIBINTL_H
-#include <libintl.h>
-#endif
-#define _(string)  gettext(string)
-#define P_(singular, plural, number)  ngettext(singular, plural, number)
-#else
-#define _(string)  (string)
-#define P_(singular, plural, number)  (number == 1 ? singular : plural)
-#endif
-#define gettext_noop(string)  (string)
-#define N_(string)  gettext_noop(string)
-		/* Mark a string that will be sent to gettext() later. */
-
-#include <dirent.h>
-#include <regex.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
-/* If we aren't using an ncurses with mouse support, exclude any
- * mouse routines, as they are useless then. */
-#ifndef NCURSES_MOUSE_VERSION
-#undef ENABLE_MOUSE
-#endif
-
-#if defined(ENABLE_WRAPPING) || defined(ENABLE_JUSTIFY)
-#define ENABLED_WRAPORJUSTIFY  1
-#endif
-
 #define BACKWARD  FALSE
 #define FORWARD  TRUE
 
@@ -134,30 +115,163 @@
 #define REPLACING  1
 #define INREGION   2
 
+#define NORMAL  TRUE
+#define SPECIAL  FALSE
+#define TEMPORARY  FALSE
+
+#define ANNOTATE  TRUE
+#define NONOTES  FALSE
+
+#define PRUNE_DUPLICATE  TRUE
+#define IGNORE_DUPLICATES  FALSE
+
+#ifdef ENABLE_UTF8
+/* In UTF-8 a valid character is at most four bytes long. */
+#define MAXCHARLEN  4
+#else
+#define MAXCHARLEN  1
+#endif
+
+/* The default width of a tab in spaces. */
+#define WIDTH_OF_TAB  8
+
+/* The default number of columns from end of line where wrapping occurs. */
+#define COLUMNS_FROM_EOL  8
+
+/* The default comment character when a syntax does not specify any. */
+#define GENERAL_COMMENT_CHARACTER  "#"
+
+/* The maximum number of search/replace history strings saved. */
+#define MAX_SEARCH_HISTORY  100
+
+/* The largest size_t number that doesn't have the high bit set. */
+#define HIGHEST_POSITIVE  ((~(size_t)0) >> 1)
+
 #ifdef ENABLE_COLOR
 #define THE_DEFAULT  -1
 #define BAD_COLOR  -2
+
+/* Flags for indicating how a multiline regex pair apply to a line. */
+#define NOTHING      (1<<1)
+		/* The start/end regexes don't cover this line at all. */
+#define STARTSHERE   (1<<2)
+		/* The start regex matches on this line, the end regex on a later one. */
+#define WHOLELINE    (1<<3)
+		/* The start regex matches on an earlier line, the end regex on a later one. */
+#define ENDSHERE     (1<<4)
+		/* The start regex matches on an earlier line, the end regex on this one. */
+#define JUSTONTHIS   (1<<5)
+		/* Both the start and end regexes match within this line. */
+#define WOULDBE      (1<<6)
+		/* An unpaired start match is on or before this line. */
 #endif
 
-#define STANDARD_INPUT  0
+/* Basic control codes. */
+#define ESC_CODE  0x1B
+#define DEL_CODE  0x7F
+
+/* Codes for "modified" Arrow keys, beyond KEY_MAX of ncurses. */
+#define CONTROL_LEFT    0x401
+#define CONTROL_RIGHT   0x402
+#define CONTROL_UP      0x403
+#define CONTROL_DOWN    0x404
+#define CONTROL_HOME    0x405
+#define CONTROL_END     0x406
+#define CONTROL_DELETE  0x40D
+#define SHIFT_CONTROL_LEFT    0x411
+#define SHIFT_CONTROL_RIGHT   0x412
+#define SHIFT_CONTROL_UP      0x413
+#define SHIFT_CONTROL_DOWN    0x414
+#define SHIFT_CONTROL_HOME    0x415
+#define SHIFT_CONTROL_END     0x416
+#define CONTROL_SHIFT_DELETE  0x41D
+#define ALT_LEFT      0x421
+#define ALT_RIGHT     0x422
+#define ALT_UP        0x423
+#define ALT_DOWN      0x424
+#define ALT_PAGEUP    0x427
+#define ALT_PAGEDOWN  0x428
+#define ALT_INSERT    0x42C
+#define ALT_DELETE    0x42D
+#define SHIFT_ALT_LEFT   0x431
+#define SHIFT_ALT_RIGHT  0x432
+#define SHIFT_ALT_UP     0x433
+#define SHIFT_ALT_DOWN   0x434
+//#define SHIFT_LEFT 0x451
+//#define SHIFT_RIGHT 0x452
+#define SHIFT_UP        0x453
+#define SHIFT_DOWN      0x454
+#define SHIFT_HOME      0x455
+#define SHIFT_END       0x456
+#define SHIFT_PAGEUP    0x457
+#define SHIFT_PAGEDOWN  0x458
+#define SHIFT_DELETE    0x45D
+#define SHIFT_TAB       0x45F
+
+/* A special keycode for when <Tab> is pressed while the mark is on. */
+#define INDENT_KEY  0x4F1
+
+/* A special keycode to signal the beginning and end of a bracketed paste. */
+#define BRACKETED_PASTE_MARKER  0x4FB
+
+/* A special keycode for when a key produces an unknown escape sequence. */
+#define FOREIGN_SEQUENCE  0x4FC
+
+/* A special keycode for plugging into the input stream after a suspension. */
+#define KEY_FRESH  0x4FE
+
+#ifndef NANO_TINY
+/* A special keycode for when we get a SIGWINCH (a window resize). */
+#define KEY_WINCH  -2
+
+/* Some extra flags for the undo function. */
+#define WAS_BACKSPACE_AT_EOF  (1<<1)
+#define WAS_WHOLE_LINE        (1<<2)
+#define INCLUDED_LAST_LINE    (1<<3)
+#define MARK_WAS_SET          (1<<4)
+#define CURSOR_WAS_AT_HEAD    (1<<5)
+#define HAD_ANCHOR_AT_START   (1<<6)
+#endif /* !NANO_TINY */
+
+/* Identifiers for the different menus. */
+#define MMAIN          (1<<0)
+#define MWHEREIS       (1<<1)
+#define MREPLACE       (1<<2)
+#define MREPLACEWITH   (1<<3)
+#define MGOTOLINE      (1<<4)
+#define MWRITEFILE     (1<<5)
+#define MINSERTFILE    (1<<6)
+#define MEXECUTE       (1<<7)
+#define MHELP          (1<<8)
+#define MSPELL         (1<<9)
+#define MBROWSER      (1<<10)
+#define MWHEREISFILE  (1<<11)
+#define MGOTODIR      (1<<12)
+#define MYESNO        (1<<13)
+#define MLINTER       (1<<14)
+#define MFINDINHELP   (1<<15)
+/* This is an abbreviation for all menus except Help and Browser and YesNo. */
+#define MMOST  (MMAIN|MWHEREIS|MREPLACE|MREPLACEWITH|MGOTOLINE|MWRITEFILE|MINSERTFILE|\
+                MEXECUTE|MWHEREISFILE|MGOTODIR|MFINDINHELP|MSPELL|MLINTER)
+#ifndef NANO_TINY
+#define MSOME  MMOST|MBROWSER
+#else
+#define MSOME  MMAIN|MBROWSER
+#endif
 
 /* Enumeration types. */
 typedef enum {
-	NIX_FILE, DOS_FILE, MAC_FILE
+	UNSPECIFIED, NIX_FILE, DOS_FILE, MAC_FILE
 } format_type;
 
 typedef enum {
-	VACUUM, HUSH, NOTICE, MILD, ALERT
+	VACUUM, HUSH, REMARK, INFO, NOTICE, AHEM, MILD, ALERT
 } message_type;
 
 typedef enum {
 	OVERWRITE, APPEND, PREPEND
 } kind_of_writing_type;
 
-typedef enum {
-	SOFTMARK, HARDMARK
-} mark_type;
-
 typedef enum {
 	CENTERING, FLOWING, STATIONARY
 } update_type;
@@ -176,6 +290,77 @@ typedef enum {
 	COUPLE_BEGIN, COUPLE_END, OTHER
 } undo_type;
 
+/* The elements of the interface that can be colored differently. */
+enum {
+	TITLE_BAR = 0,
+	LINE_NUMBER,
+	GUIDE_STRIPE,
+	SCROLL_BAR,
+	SELECTED_TEXT,
+	SPOTLIGHTED,
+	MINI_INFOBAR,
+	PROMPT_BAR,
+	STATUS_BAR,
+	ERROR_MESSAGE,
+	KEY_COMBO,
+	FUNCTION_TAG,
+	NUMBER_OF_ELEMENTS
+};
+
+/* Enumeration used in the flags array.  See the definition of FLAGMASK. */
+enum {
+	DONTUSE = 0,
+	CASE_SENSITIVE,
+	CONSTANT_SHOW,
+	NO_HELP,
+	SUSPENDABLE,
+	NO_WRAP,
+	AUTOINDENT,
+	VIEW_MODE,
+	USE_MOUSE,
+	USE_REGEXP,
+	SAVE_ON_EXIT,
+	CUT_FROM_CURSOR,
+	BACKWARDS_SEARCH,
+	MULTIBUFFER,
+	REBIND_DELETE,
+	RAW_SEQUENCES,
+	NO_CONVERT,
+	MAKE_BACKUP,
+	INSECURE_BACKUP,
+	NO_SYNTAX,
+	PRESERVE,
+	HISTORYLOG,
+	RESTRICTED,
+	SMART_HOME,
+	WHITESPACE_DISPLAY,
+	TABS_TO_SPACES,
+	QUICK_BLANK,
+	WORD_BOUNDS,
+	NO_NEWLINES,
+	BOLD_TEXT,
+	SOFTWRAP,
+	POSITIONLOG,
+	LOCKING,
+	NOREAD_MODE,
+	MAKE_IT_UNIX,
+	TRIM_BLANKS,
+	SHOW_CURSOR,
+	LINE_NUMBERS,
+	AT_BLANKS,
+	AFTER_ENDS,
+	LET_THEM_ZAP,
+	BREAK_LONG_LINES,
+	JUMPY_SCROLLING,
+	EMPTY_LINE,
+	INDICATOR,
+	BOOKSTYLE,
+	STATEFLAGS,
+	USE_MAGIC,
+	MINIBAR,
+	ZERO
+};
+
 /* Structure types. */
 #ifdef ENABLE_COLOR
 typedef struct colortype {
@@ -198,8 +383,8 @@ typedef struct colortype {
 } colortype;
 
 typedef struct regexlisttype {
-	char *full_regex;
-		/* A regex string to match things that imply a certain syntax. */
+	regex_t *one_rgx;
+		/* A regex to match things that imply a certain syntax. */
 	struct regexlisttype *next;
 		/* The next regex. */
 } regexlisttype;
@@ -222,7 +407,7 @@ typedef struct syntaxtype {
 		/* File where the syntax is defined, or NULL if not an included file. */
 	size_t lineno;
 		/* The line number where the 'syntax' command was found. */
-	struct augmentstruct *augmentations;
+	augmentstruct *augmentations;
 		/* List of extendsyntax commands to apply when loaded. */
 	regexlisttype *extensions;
 		/* The list of extensions that this syntax applies to. */
@@ -262,20 +447,6 @@ typedef struct lintstruct {
 	struct lintstruct *prev;
 		/* Previous error. */
 } lintstruct;
-
-/* Flags that indicate how a multiline regex applies to a line. */
-#define CNONE           (1<<1)
-		/* Yay, regex doesn't apply to this line at all! */
-#define CBEGINBEFORE    (1<<2)
-		/* Regex starts on an earlier line, ends on this one. */
-#define CENDAFTER       (1<<3)
-		/* Regex starts on this line and ends on a later one. */
-#define CWHOLELINE      (1<<4)
-		/* Whole line engulfed by the regex, start < me, end > me. */
-#define CSTARTENDHERE   (1<<5)
-		/* Regex starts and ends within this line. */
-#define CWOULDBE        (1<<6)
-		/* An unpaired start match on or before this line. */
 #endif /* ENABLE_COLOR */
 
 /* More structure types. */
@@ -284,10 +455,6 @@ typedef struct linestruct {
 		/* The text of this line. */
 	ssize_t lineno;
 		/* The number of this line. */
-#ifndef NANO_TINY
-	ssize_t extrarows;
-		/* The extra rows that this line occupies when softwrapping. */
-#endif
 	struct linestruct *next;
 		/* Next node. */
 	struct linestruct *prev;
@@ -345,11 +512,11 @@ typedef struct undostruct {
 #ifdef ENABLE_HISTORIES
 typedef struct poshiststruct {
 	char *filename;
-		/* The file. */
-	ssize_t lineno;
-		/* Line number we left off on. */
-	ssize_t xno;
-		/* The x position in the file we left off on. */
+		/* The full path plus name of the file. */
+	ssize_t linenumber;
+		/* The line where the cursor was when we closed the file. */
+	ssize_t columnnumber;
+		/* The column where the cursor was. */
 	struct poshiststruct *next;
 		/* The next item of position history. */
 } poshiststruct;
@@ -388,8 +555,8 @@ typedef struct openfilestruct {
 		/* The line in the file where the mark is set; NULL if not set. */
 	size_t mark_x;
 		/* The mark's x position in the above line. */
-	mark_type kind_of_mark;
-		/* Whether it is a soft (with Shift) or a hard mark. */
+	bool softmark;
+		/* Whether a marked region was made by holding Shift. */
 	format_type fmt;
 		/* The file's format -- Unix or DOS or Mac. */
 	char *lock_filename;
@@ -410,6 +577,8 @@ typedef struct openfilestruct {
 		/* The syntax that applies to this file, if any. */
 #endif
 #ifdef ENABLE_MULTIBUFFER
+	char *errormessage;
+		/* The ALERT message (if any) that occurred when opening the file. */
 	struct openfilestruct *next;
 		/* The next open file, if any. */
 	struct openfilestruct *prev;
@@ -453,8 +622,6 @@ typedef struct keystruct {
 typedef struct funcstruct {
 	void (*func)(void);
 		/* The actual function to call. */
-	int menus;
-		/* In what menus this function applies. */
 	const char *desc;
 		/* The function's short description, for example "Where Is". */
 #ifdef ENABLE_HELP
@@ -466,197 +633,15 @@ typedef struct funcstruct {
 #endif
 	bool viewok;
 		/* Is this function allowed when in view mode? */
-	long toggle;
-		/* If this is a toggle, which toggle to affect. */
+	int menus;
+		/* In what menus this function applies. */
 	struct funcstruct *next;
 		/* Next item in the list. */
 } funcstruct;
 
 #ifdef ENABLE_WORDCOMPLETION
-typedef struct completion_word {
+typedef struct completionstruct {
 	char *word;
-	struct completion_word *next;
-} completion_word;
+	struct completionstruct *next;
+} completionstruct;
 #endif
-
-/* The elements of the interface that can be colored differently. */
-enum
-{
-	TITLE_BAR = 0,
-	LINE_NUMBER,
-	GUIDE_STRIPE,
-	SELECTED_TEXT,
-	STATUS_BAR,
-	ERROR_MESSAGE,
-	KEY_COMBO,
-	FUNCTION_TAG,
-	NUMBER_OF_ELEMENTS
-};
-
-/* Enumeration used in the flags array.  See the definition of FLAGMASK. */
-enum
-{
-	DONTUSE,
-	CASE_SENSITIVE,
-	CONSTANT_SHOW,
-	NO_HELP,
-	SUSPENDABLE,
-	NO_WRAP,
-	AUTOINDENT,
-	VIEW_MODE,
-	USE_MOUSE,
-	USE_REGEXP,
-	SAVE_ON_EXIT,
-	CUT_FROM_CURSOR,
-	BACKWARDS_SEARCH,
-	MULTIBUFFER,
-	SMOOTH_SCROLL,
-	REBIND_DELETE,
-	RAW_SEQUENCES,
-	NO_CONVERT,
-	MAKE_BACKUP,
-	INSECURE_BACKUP,
-	NO_SYNTAX,
-	PRESERVE,
-	HISTORYLOG,
-	RESTRICTED,
-	SMART_HOME,
-	WHITESPACE_DISPLAY,
-	MORE_SPACE,
-	TABS_TO_SPACES,
-	QUICK_BLANK,
-	WORD_BOUNDS,
-	NO_NEWLINES,
-	BOLD_TEXT,
-	SOFTWRAP,
-	POSITIONLOG,
-	LOCKING,
-	NOREAD_MODE,
-	MAKE_IT_UNIX,
-	TRIM_BLANKS,
-	SHOW_CURSOR,
-	LINE_NUMBERS,
-	NO_PAUSES,
-	AT_BLANKS,
-	AFTER_ENDS,
-	LET_THEM_ZAP,
-	BREAK_LONG_LINES,
-	JUMPY_SCROLLING,
-	EMPTY_LINE,
-	INDICATOR,
-	BOOKSTYLE
-};
-
-/* Flags for the menus in which a given function should be present. */
-#define MMAIN           (1<<0)
-#define MWHEREIS        (1<<1)
-#define MREPLACE        (1<<2)
-#define MREPLACEWITH    (1<<3)
-#define MGOTOLINE       (1<<4)
-#define MWRITEFILE      (1<<5)
-#define MINSERTFILE     (1<<6)
-#define MEXECUTE        (1<<7)
-#define MHELP           (1<<8)
-#define MSPELL          (1<<9)
-#define MBROWSER        (1<<10)
-#define MWHEREISFILE    (1<<11)
-#define MGOTODIR        (1<<12)
-#define MYESNO          (1<<13)
-#define MLINTER         (1<<14)
-#define MFINDINHELP     (1<<15)
-/* This is an abbreviation for all menus except Help and Browser and YesNo. */
-#define MMOST  (MMAIN|MWHEREIS|MREPLACE|MREPLACEWITH|MGOTOLINE|MWRITEFILE|MINSERTFILE|\
-                MEXECUTE|MWHEREISFILE|MGOTODIR|MFINDINHELP|MSPELL|MLINTER)
-#ifndef NANO_TINY
-#define MSOME  MMOST|MBROWSER
-#else
-#define MSOME  MMAIN|MBROWSER
-#endif
-
-/* Basic control codes. */
-#define ESC_CODE  0x1B
-#define DEL_CODE  0x7F
-
-/* Codes for "modified" Arrow keys, beyond KEY_MAX of ncurses. */
-#define CONTROL_LEFT    0x401
-#define CONTROL_RIGHT   0x402
-#define CONTROL_UP      0x403
-#define CONTROL_DOWN    0x404
-#define CONTROL_HOME    0x405
-#define CONTROL_END     0x406
-#define CONTROL_DELETE  0x40D
-#define SHIFT_CONTROL_LEFT    0x411
-#define SHIFT_CONTROL_RIGHT   0x412
-#define SHIFT_CONTROL_UP      0x413
-#define SHIFT_CONTROL_DOWN    0x414
-#define SHIFT_CONTROL_HOME    0x415
-#define SHIFT_CONTROL_END     0x416
-#define CONTROL_SHIFT_DELETE  0x41D
-#define ALT_LEFT      0x421
-#define ALT_RIGHT     0x422
-#define ALT_UP        0x423
-#define ALT_DOWN      0x424
-#define ALT_PAGEUP    0x427
-#define ALT_PAGEDOWN  0x428
-#define ALT_INSERT    0x42C
-#define ALT_DELETE    0x42D
-#define SHIFT_ALT_LEFT   0x431
-#define SHIFT_ALT_RIGHT  0x432
-#define SHIFT_ALT_UP     0x433
-#define SHIFT_ALT_DOWN   0x434
-//#define SHIFT_LEFT 0x451
-//#define SHIFT_RIGHT 0x452
-#define SHIFT_UP        0x453
-#define SHIFT_DOWN      0x454
-#define SHIFT_HOME      0x455
-#define SHIFT_END       0x456
-#define SHIFT_PAGEUP    0x457
-#define SHIFT_PAGEDOWN  0x458
-#define SHIFT_DELETE    0x45D
-#define SHIFT_TAB       0x45F
-
-/* A special keycode for when <Tab> is pressed while the mark is on. */
-#define INDENT_KEY  0x4F1
-
-/* A special keycode to signal the beginning and end of a bracketed paste. */
-#define BRACKETED_PASTE_MARKER  0x4FB
-
-/* A special keycode for when a key produces an unknown escape sequence. */
-#define FOREIGN_SEQUENCE  0x4FC
-
-#ifdef USE_SLANG
-#ifdef ENABLE_UTF8
-#define KEY_BAD  0xFF  /* Clipped error code. */
-#endif
-#define KEY_FLUSH  0x91  /* User-definable control code. */
-#else
-#define KEY_FLUSH  KEY_F0  /* Nonexistent function key. */
-#endif
-
-#ifndef NANO_TINY
-/* An imaginary key for when we get a SIGWINCH (window resize). */
-#define KEY_WINCH  -2
-
-/* Some extra flags for the undo function. */
-#define WAS_BACKSPACE_AT_EOF  (1<<1)
-#define WAS_WHOLE_LINE        (1<<2)
-#define INCLUDED_LAST_LINE    (1<<3)
-#define MARK_WAS_SET          (1<<4)
-#define CURSOR_WAS_AT_HEAD    (1<<5)
-#endif /* !NANO_TINY */
-
-/* The default number of columns from end of line where wrapping occurs. */
-#define COLUMNS_FROM_EOL  8
-
-/* The default width of a tab in spaces. */
-#define WIDTH_OF_TAB  8
-
-/* The default comment character when a syntax does not specify any. */
-#define GENERAL_COMMENT_CHARACTER  "#"
-
-/* The maximum number of search/replace history strings saved, not
- * counting the blank lines at their ends. */
-#define MAX_SEARCH_HISTORY  100
-
-/* The largest size_t number that doesn't have the high bit set. */
-#define HIGHEST_POSITIVE  ((~(size_t)0) >> 1)

src/global.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   global.c  --  This file is part of GNU nano.                         *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2014-2020 Benno Schulenberg                            *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
@@ -49,7 +49,8 @@ bool we_are_running = FALSE;
 		/* Becomes TRUE as soon as all options and files have been read. */
 bool more_than_one = FALSE;
 		/* Whether more than one buffer is or has been open. */
-
+bool report_size = TRUE;
+		/* Whether to show the number of lines when the minibar is used. */
 bool ran_a_tool = FALSE;
 		/* Whether a tool has been run at the Execute-Command prompt. */
 
@@ -215,15 +216,16 @@ funcstruct *exitfunc;
 
 linestruct *search_history = NULL;
 		/* The current item in the list of strings that were searched for. */
-linestruct *execute_history = NULL;
-		/* The current item in the list of commands that were run with ^R ^X. */
 linestruct *replace_history = NULL;
 		/* The current item in the list of replace strings. */
+linestruct *execute_history = NULL;
+		/* The current item in the list of commands that were run with ^T. */
+
 #ifdef ENABLE_HISTORIES
 linestruct *searchtop = NULL;
 		/* The oldest item in the list of search strings. */
 linestruct *searchbot = NULL;
-		/* The newest item in the list of search strings. */
+		/* The empty item at the end of the list of search strings. */
 
 linestruct *replacetop = NULL;
 linestruct *replacebot = NULL;
@@ -279,78 +281,36 @@ size_t light_to_col = 0;
 #endif
 
 /* Empty functions, for the most part corresponding to toggles. */
-void case_sens_void(void)
-{
-}
-void regexp_void(void)
-{
-}
-void backwards_void(void)
-{
-}
-void flip_replace(void)
-{
-}
-void flip_goto(void)
-{
-}
+void case_sens_void(void)  {;}
+void regexp_void(void)  {;}
+void backwards_void(void)  {;}
+#ifdef ENABLE_HISTORIES
+void get_older_item(void)  {;}
+void get_newer_item(void)  {;}
+#endif
+void flip_replace(void)  {;}
+void flip_goto(void)  {;}
 #ifdef ENABLE_BROWSER
-void to_files(void)
-{
-}
-void to_first_file(void)
-{
-}
-void to_last_file(void)
-{
-}
-void goto_dir(void)
-{
-}
+void to_files(void)  {;}
+void goto_dir(void)  {;}
 #endif
 #ifndef NANO_TINY
-void do_nothing(void)
-{
-}
-void do_toggle_void(void)
-{
-}
-void dos_format_void(void)
-{
-}
-void mac_format_void(void)
-{
-}
-void append_void(void)
-{
-}
-void prepend_void(void)
-{
-}
-void backup_file_void(void)
-{
-}
-void flip_execute(void)
-{
-}
-void flip_pipe(void)
-{
-}
-void flip_convert(void)
-{
-}
+void do_nothing(void)  {;}
+void do_toggle(void)  {;}
+void dos_format(void)  {;}
+void mac_format(void)  {;}
+void append_it(void)  {;}
+void prepend_it(void)  {;}
+void back_it_up(void)  {;}
+void flip_execute(void)  {;}
+void flip_pipe(void)  {;}
+void flip_convert(void)  {;}
 #endif
 #ifdef ENABLE_MULTIBUFFER
-void flip_newbuffer(void)
-{
-}
+void flip_newbuffer(void)  {;}
 #endif
-void discard_buffer(void)
-{
-}
-void do_cancel(void)
-{
-}
+void discard_buffer(void)  {;}
+void do_cancel(void)  {;}
 
 /* Add a function to the linked list of functions. */
 void add_to_funcs(void (*func)(void), int menus, const char *desc,
@@ -381,7 +341,7 @@ int keycode_from_string(const char *keystring)
 {
 	if (keystring[0] == '^') {
 		if (keystring[2] == '\0') {
-			if (keystring[1] == '/')
+			if (keystring[1] == '/' || keystring[1] == '-')
 				return 31;
 			if (keystring[1] <= '_')
 				return keystring[1] - 64;
@@ -477,7 +437,8 @@ size_t shown_entries_for(int menu)
 	}
 
 	/* When --saveonexit is not used, widen the grid of the WriteOut menu. */
-	if (menu == MWRITEFILE && first_sc_for(menu, discard_buffer) == NULL)
+	if (menu == MWRITEFILE && item == NULL &&
+						first_sc_for(menu, discard_buffer) == NULL)
 		count--;
 
 	return count;
@@ -529,6 +490,7 @@ functionptrtype interpret(int *keycode)
 			return do_findnext;
 
 		switch (tolower(*keycode)) {
+			case 'b':
 			case '-':
 				return do_page_up;
 			case ' ':
@@ -555,6 +517,14 @@ functionptrtype interpret(int *keycode)
 }
 #endif /* ENABLE_BROWSER || ENABLE_HELP */
 
+#if defined(NANO_TINY) && defined(ENABLE_LINENUMBERS)
+/* Allow toggling line numbers also in the tiny version. */
+void toggle_numbers(void)
+{
+	TOGGLE(LINE_NUMBERS);
+}
+#endif
+
 /* These two tags are used elsewhere too, so they are global. */
 /* TRANSLATORS: Try to keep the next two strings at most 10 characters. */
 const char *exit_tag = N_("Exit");
@@ -652,9 +622,9 @@ void shortcut_init(void)
 #ifndef NANO_TINY
 	const char *wordcount_gist =
 		N_("Count the number of words, lines, and characters");
+	const char *suspend_gist = N_("Suspend the editor (return to the shell)");
 #endif
 	const char *refresh_gist = N_("Refresh (redraw) the current screen");
-	const char *suspend_gist = N_("Suspend the editor (if suspension is enabled)");
 #ifdef ENABLE_WORDCOMPLETION
 	const char *completion_gist = N_("Try and complete the current word");
 #endif
@@ -728,10 +698,11 @@ void shortcut_init(void)
 #endif
 
 	/* Start populating the different menus with functions. */
-
+#ifdef ENABLE_HELP
 	add_to_funcs(do_help, (MMOST | MBROWSER) & ~MFINDINHELP,
 		/* TRANSLATORS: Try to keep the next thirteen strings at most 10 characters. */
 		N_("Help"), WITHORSANS(help_gist), TOGETHER, VIEW);
+#endif
 
 	add_to_funcs(do_cancel, ((MMOST & ~MMAIN) | MYESNO),
 		N_("Cancel"), WITHORSANS(cancel_gist), BLANKAFTER, VIEW);
@@ -746,7 +717,16 @@ void shortcut_init(void)
 		close_tag, WITHORSANS(exitbrowser_gist), TOGETHER, VIEW);
 #endif
 
-	add_to_funcs(do_writeout_void, MMAIN,
+#ifndef ENABLE_HELP
+	add_to_funcs(full_refresh, MMAIN|MREPLACE, "Refresh", "x", 0, VIEW);
+#ifndef NANO_TINY
+	add_to_funcs(full_refresh, MINSERTFILE|MEXECUTE, "Refresh", "x", 0, VIEW);
+#endif
+	add_to_funcs(flip_goto, MWHEREIS, "Go To Line", "x", 0, VIEW);
+	add_to_funcs(flip_goto, MGOTOLINE, "Go To Text", "x", 0, VIEW);
+#endif
+
+	add_to_funcs(do_writeout, MMAIN,
 		N_("Write Out"), WITHORSANS(writeout_gist), TOGETHER, NOVIEW);
 
 #ifdef ENABLE_JUSTIFY
@@ -754,14 +734,14 @@ void shortcut_init(void)
 	 * otherwise, show Insert anyway, to keep the help items paired. */
 	if (!ISSET(RESTRICTED))
 #endif
-		add_to_funcs(do_insertfile_void, MMAIN,
+		add_to_funcs(do_insertfile, MMAIN,
 				N_("Read File"), WITHORSANS(readfile_gist), BLANKAFTER,
 				/* We allow inserting files in view mode if multibuffer mode
 				 * is available, so that the user can view multiple files. */
 				CAN_OPEN_OTHER_BUFFER);
 #ifdef ENABLE_JUSTIFY
 	else
-		add_to_funcs(do_justify_void, MMAIN,
+		add_to_funcs(do_justify, MMAIN,
 				N_("Justify"), WITHORSANS(justify_gist), BLANKAFTER, NOVIEW);
 #endif
 
@@ -778,6 +758,16 @@ void shortcut_init(void)
 	add_to_funcs(do_replace, MMAIN,
 		N_("Replace"), WITHORSANS(replace_gist), TOGETHER, NOVIEW);
 
+#ifdef NANO_TINY
+	add_to_funcs(do_search_backward, MHELP,
+		N_("Where Was"), WITHORSANS(wherewas_gist), TOGETHER, VIEW);
+
+	add_to_funcs(do_findprevious, MMAIN|MHELP,
+		N_("Previous"), WITHORSANS(findprev_gist), TOGETHER, VIEW);
+	add_to_funcs(do_findnext, MMAIN|MHELP,
+		N_("Next"), WITHORSANS(findnext_gist), BLANKAFTER, VIEW);
+#endif
+
 	add_to_funcs(cut_text, MMAIN,
 		N_("Cut"), WITHORSANS(cut_gist), TOGETHER, NOVIEW);
 
@@ -790,18 +780,19 @@ void shortcut_init(void)
 				N_("Execute"), WITHORSANS(execute_gist), TOGETHER, NOVIEW);
 #endif
 #ifdef ENABLE_JUSTIFY
-		add_to_funcs(do_justify_void, MMAIN,
+		add_to_funcs(do_justify, MMAIN,
 				N_("Justify"), WITHORSANS(justify_gist), BLANKAFTER, NOVIEW);
 #endif
 	}
 
 	add_to_funcs(report_cursor_position, MMAIN,
+		/* TRANSLATORS: This refers to the position of the cursor. */
 		N_("Location"), WITHORSANS(cursorpos_gist), TOGETHER, VIEW);
 
 #if defined(NANO_TINY) || defined(ENABLE_JUSTIFY)
 	/* Conditionally placing this one here or further on, to keep the
 	 * help items nicely paired in most conditions. */
-	add_to_funcs(do_gotolinecolumn_void, MMAIN,
+	add_to_funcs(do_gotolinecolumn, MMAIN,
 		N_("Go To Line"), WITHORSANS(gotoline_gist), BLANKAFTER, VIEW);
 #endif
 
@@ -815,7 +806,7 @@ void shortcut_init(void)
 	add_to_funcs(do_mark, MMAIN,
 		N_("Set Mark"), WITHORSANS(mark_gist), TOGETHER, VIEW);
 	add_to_funcs(copy_text, MMAIN,
-		N_("Copy"), WITHORSANS(copy_gist), BLANKAFTER, NOVIEW);
+		N_("Copy"), WITHORSANS(copy_gist), BLANKAFTER, VIEW);
 #endif
 
 	add_to_funcs(case_sens_void, MWHEREIS|MREPLACE,
@@ -827,51 +818,59 @@ void shortcut_init(void)
 
 	add_to_funcs(flip_replace, MWHEREIS,
 		N_("Replace"), WITHORSANS(replace_gist), BLANKAFTER, VIEW);
-
 	add_to_funcs(flip_replace, MREPLACE,
 		N_("No Replace"), WITHORSANS(whereis_gist), BLANKAFTER, VIEW);
 
 #ifdef ENABLE_HISTORIES
-	add_to_funcs(get_history_older_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
+	add_to_funcs(get_older_item, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
 		N_("Older"), WITHORSANS(older_gist), TOGETHER, VIEW);
-	add_to_funcs(get_history_newer_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
+	add_to_funcs(get_newer_item, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
 		N_("Newer"), WITHORSANS(newer_gist), BLANKAFTER, VIEW);
 #endif
 
+#ifdef ENABLE_HELP
 	add_to_funcs(flip_goto, MWHEREIS,
 		N_("Go To Line"), WITHORSANS(gotoline_gist), BLANKAFTER, VIEW);
+#endif
 
 #ifdef ENABLE_BROWSER
 	add_to_funcs(goto_dir, MBROWSER,
 		/* TRANSLATORS: Try to keep the next seven strings at most 10 characters. */
 		N_("Go To Dir"), WITHORSANS(gotodir_gist), TOGETHER, VIEW);
-
+#ifdef ENABLE_HELP
 	add_to_funcs(full_refresh, MBROWSER,
 		N_("Refresh"), WITHORSANS(browserrefresh_gist), BLANKAFTER, VIEW);
-
+#endif
 	add_to_funcs(do_search_forward, MBROWSER,
 		N_("Where Is"), WITHORSANS(browserwhereis_gist), TOGETHER, VIEW);
 	add_to_funcs(do_search_backward, MBROWSER,
 		N_("Where Was"), WITHORSANS(browserwherewas_gist), TOGETHER, VIEW);
+
+	add_to_funcs(do_findprevious, MBROWSER,
+		N_("Previous"), WITHORSANS(findprev_gist), TOGETHER, VIEW);
+	add_to_funcs(do_findnext, MBROWSER,
+		N_("Next"), WITHORSANS(findnext_gist), BLANKAFTER, VIEW);
 #endif
 
-#ifndef NANO_TINY
+#ifdef NANO_TINY
+	add_to_funcs(to_prev_word, MMAIN,
+		"Prev Word", WITHORSANS(prevword_gist), TOGETHER, VIEW);
+	add_to_funcs(to_next_word, MMAIN,
+		"Next Word", WITHORSANS(nextword_gist), BLANKAFTER, VIEW);
+#else
 	add_to_funcs(do_find_bracket, MMAIN,
 		N_("To Bracket"), WITHORSANS(bracket_gist), BLANKAFTER, VIEW);
 
 	add_to_funcs(do_search_backward, MMAIN|MHELP,
 		/* TRANSLATORS: This starts a backward search. */
 		N_("Where Was"), WITHORSANS(wherewas_gist), TOGETHER, VIEW);
-#else
-	add_to_funcs(do_search_backward, MHELP,
-		N_("Where Was"), WITHORSANS(wherewas_gist), TOGETHER, VIEW);
-#endif
 
-	add_to_funcs(do_findprevious, MMAIN|MBROWSER|MHELP,
+	add_to_funcs(do_findprevious, MMAIN|MHELP,
 		/* TRANSLATORS: This refers to searching the preceding occurrence. */
 		N_("Previous"), WITHORSANS(findprev_gist), TOGETHER, VIEW);
-	add_to_funcs(do_findnext, MMAIN|MBROWSER|MHELP,
+	add_to_funcs(do_findnext, MMAIN|MHELP,
 		N_("Next"), WITHORSANS(findnext_gist), BLANKAFTER, VIEW);
+#endif
 
 	add_to_funcs(do_left, MMAIN,
 		/* TRANSLATORS: This means move the cursor one character back. */
@@ -885,11 +884,13 @@ void shortcut_init(void)
 		N_("Forward"), WITHORSANS(forwardfile_gist), TOGETHER, VIEW);
 #endif
 
+#ifndef NANO_TINY
 	add_to_funcs(to_prev_word, MMAIN,
 		/* TRANSLATORS: Try to keep the next ten strings at most 12 characters. */
 		N_("Prev Word"), WITHORSANS(prevword_gist), TOGETHER, VIEW);
 	add_to_funcs(to_next_word, MMAIN,
 		N_("Next Word"), WITHORSANS(nextword_gist), TOGETHER, VIEW);
+#endif
 
 	add_to_funcs(do_home, MMAIN,
 		N_("Home"), WITHORSANS(home_gist), TOGETHER, VIEW);
@@ -913,7 +914,7 @@ void shortcut_init(void)
 		N_("Next Block"), WITHORSANS(nextblock_gist), TOGETHER, VIEW);
 #ifdef ENABLE_JUSTIFY
 	add_to_funcs(to_para_begin, MMAIN|MGOTOLINE,
-		/* TRANSLATORS: Try to keep these two strings at most 15 characters. */
+		/* TRANSLATORS: Try to keep these two strings at most 16 characters. */
 		N_("Begin of Paragr."), WITHORSANS(parabegin_gist), TOGETHER, VIEW);
 	add_to_funcs(to_para_end, MMAIN|MGOTOLINE,
 		N_("End of Paragraph"), WITHORSANS(paraend_gist), BLANKAFTER, VIEW);
@@ -938,7 +939,7 @@ void shortcut_init(void)
 #endif
 
 #if !defined(NANO_TINY) && !defined(ENABLE_JUSTIFY)
-	add_to_funcs(do_gotolinecolumn_void, MMAIN,
+	add_to_funcs(do_gotolinecolumn, MMAIN,
 		N_("Go To Line"), WITHORSANS(gotoline_gist), BLANKAFTER, VIEW);
 #endif
 
@@ -975,18 +976,21 @@ void shortcut_init(void)
 #endif
 
 #ifndef NANO_TINY
-	add_to_funcs(do_wordlinechar_count, MMAIN,
+	add_to_funcs(count_lines_words_and_characters, MMAIN,
 		N_("Word Count"), WITHORSANS(wordcount_gist), TOGETHER, VIEW);
 #endif
 
 	add_to_funcs(do_verbatim_input, MMAIN,
 		N_("Verbatim"), WITHORSANS(verbatim_gist), BLANKAFTER, NOVIEW);
 
+#ifndef NANO_TINY
+	add_to_funcs(do_suspend, MMAIN,
+		N_("Suspend"), WITHORSANS(suspend_gist), TOGETHER, VIEW);
+#endif
+#ifdef ENABLE_HELP
 	add_to_funcs(full_refresh, MMAIN,
-		N_("Refresh"), WITHORSANS(refresh_gist), TOGETHER, VIEW);
-
-	add_to_funcs(do_suspend_void, MMAIN,
-		N_("Suspend"), WITHORSANS(suspend_gist), BLANKAFTER, VIEW);
+		N_("Refresh"), WITHORSANS(refresh_gist), BLANKAFTER, VIEW);
+#endif
 
 #ifndef NANO_TINY
 	add_to_funcs(do_indent, MMAIN,
@@ -1002,6 +1006,7 @@ void shortcut_init(void)
 	add_to_funcs(complete_a_word, MMAIN,
 		N_("Complete"), WITHORSANS(completion_gist), BLANKAFTER, NOVIEW);
 #endif
+
 #ifndef NANO_TINY
 	add_to_funcs(record_macro, MMAIN,
 		N_("Record"), WITHORSANS(recordmacro_gist), TOGETHER, VIEW);
@@ -1032,10 +1037,12 @@ void shortcut_init(void)
 #endif
 	}
 #endif /* !NANO_TINY */
+
 #ifdef NANO_TINY
 	add_to_funcs(do_search_backward, MMAIN,
 		N_("Where Was"), WITHORSANS(wherewas_gist), BLANKAFTER, VIEW);
 #endif
+
 #if !defined(NANO_TINY) || defined(ENABLE_HELP)
 	add_to_funcs(do_center, MMAIN,
 		N_("Center"), WITHORSANS(center_gist), BLANKAFTER, VIEW);
@@ -1070,13 +1077,15 @@ void shortcut_init(void)
 			N_("Formatter"), WITHORSANS(formatter_gist), BLANKAFTER, NOVIEW);
 #endif
 
+#ifdef ENABLE_HELP
 	add_to_funcs(flip_goto, MGOTOLINE,
 		N_("Go To Text"), WITHORSANS(whereis_gist), BLANKAFTER, VIEW);
+#endif
 
 #ifndef NANO_TINY
-	add_to_funcs(dos_format_void, MWRITEFILE,
+	add_to_funcs(dos_format, MWRITEFILE,
 		N_("DOS Format"), WITHORSANS(dos_gist), TOGETHER, NOVIEW);
-	add_to_funcs(mac_format_void, MWRITEFILE,
+	add_to_funcs(mac_format, MWRITEFILE,
 		N_("Mac Format"), WITHORSANS(mac_gist), TOGETHER, NOVIEW);
 
 	/* If we're using restricted mode, the Append, Prepend, and Backup toggles
@@ -1084,12 +1093,12 @@ void shortcut_init(void)
 	 * reduplicating the current file, and the third is not allowed as it
 	 * would write to a file not specified on the command line. */
 	if (!ISSET(RESTRICTED)) {
-		add_to_funcs(append_void, MWRITEFILE,
+		add_to_funcs(append_it, MWRITEFILE,
 			N_("Append"), WITHORSANS(append_gist), TOGETHER, NOVIEW);
-		add_to_funcs(prepend_void, MWRITEFILE,
+		add_to_funcs(prepend_it, MWRITEFILE,
 			N_("Prepend"), WITHORSANS(prepend_gist), TOGETHER, NOVIEW);
 
-		add_to_funcs(backup_file_void, MWRITEFILE,
+		add_to_funcs(back_it_up, MWRITEFILE,
 			N_("Backup File"), WITHORSANS(backup_gist), BLANKAFTER, NOVIEW);
 	}
 
@@ -1104,10 +1113,11 @@ void shortcut_init(void)
 		add_to_funcs(cut_till_eof, MEXECUTE,
 			N_("Cut Till End"), WITHORSANS(cuttilleof_gist), BLANKAFTER, NOVIEW);
 
-		add_to_funcs(do_suspend_void, MEXECUTE,
+		add_to_funcs(do_suspend, MEXECUTE,
 			N_("Suspend"), WITHORSANS(suspend_gist), BLANKAFTER, VIEW);
 	}
 #endif /* !NANO_TINY */
+
 #ifdef ENABLE_BROWSER
 	/* The file browser is only available when not in restricted mode. */
 	if (!ISSET(RESTRICTED))
@@ -1124,6 +1134,7 @@ void shortcut_init(void)
 		N_("First File"), WITHORSANS(firstfile_gist), TOGETHER, VIEW);
 	add_to_funcs(to_last_file, MBROWSER|MWHEREISFILE,
 		N_("Last File"), WITHORSANS(lastfile_gist), BLANKAFTER, VIEW);
+
 #ifndef NANO_TINY
 	add_to_funcs(to_prev_word, MBROWSER,
 		N_("Left Column"), WITHORSANS(browserlefthand_gist), TOGETHER, VIEW);
@@ -1147,6 +1158,12 @@ void shortcut_init(void)
 		N_("Next Linter message"), WITHORSANS(nextlint_gist), TOGETHER, VIEW);
 #endif
 
+#ifdef __linux__
+#define SLASH_OR_DASH  (on_a_vt) ? "^-" : "^/"
+#else
+#define SLASH_OR_DASH  "^/"
+#endif
+
 	/* Link key combos to functions in certain menus. */
 	add_to_sclist(MMOST|MBROWSER, "^M", '\r', do_enter, 0);
 	add_to_sclist(MMOST|MBROWSER, "Enter", KEY_ENTER, do_enter, 0);
@@ -1161,9 +1178,9 @@ void shortcut_init(void)
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "^X", 0, do_exit, 0);
 	if (!ISSET(PRESERVE))
 		add_to_sclist(MMAIN, "^S", 0, do_savefile, 0);
-	add_to_sclist(MMAIN, "^O", 0, do_writeout_void, 0);
-	add_to_sclist(MMAIN, "^R", 0, do_insertfile_void, 0);
-	add_to_sclist(MMAIN, "Ins", KEY_IC, do_insertfile_void, 0);
+	add_to_sclist(MMAIN, "^O", 0, do_writeout, 0);
+	add_to_sclist(MMAIN, "^R", 0, do_insertfile, 0);
+	add_to_sclist(MMAIN, "Ins", KEY_IC, do_insertfile, 0);
 	if (!ISSET(PRESERVE))
 		add_to_sclist(MMAIN|MBROWSER|MHELP, "^Q", 0, do_search_backward, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "^W", 0, do_search_forward, 0);
@@ -1175,11 +1192,16 @@ void shortcut_init(void)
 	add_to_sclist(MMAIN, "^T", 0, do_execute, 0);
 #endif
 #ifdef ENABLE_JUSTIFY
-	add_to_sclist(MMAIN, "^J", '\n', do_justify_void, 0);
+	add_to_sclist(MMAIN, "^J", '\n', do_justify, 0);
 #endif
 #ifdef ENABLE_SPELLER
-	add_to_sclist(MEXECUTE, "^S", 0, do_spell, 0);
+#ifndef NANO_TINY
+	if (!ISSET(PRESERVE))
+		add_to_sclist(MEXECUTE, "^S", 0, do_spell, 0);
 	add_to_sclist(MEXECUTE, "^T", 0, do_spell, 0);
+#else
+	add_to_sclist(MMAIN, "^T", 0, do_spell, 0);
+#endif
 #endif
 #ifdef ENABLE_COLOR
 	add_to_sclist(MMAIN, "M-B", 0, do_linter, 0);
@@ -1188,8 +1210,9 @@ void shortcut_init(void)
 	add_to_sclist(MEXECUTE, "^O", 0, do_formatter, 0);
 #endif
 	add_to_sclist(MMAIN, "^C", 0, report_cursor_position, 0);
-	add_to_sclist(MMAIN, "^_", 0, do_gotolinecolumn_void, 0);
-	add_to_sclist(MMAIN, "M-G", 0, do_gotolinecolumn_void, 0);
+	add_to_sclist(MMAIN, SLASH_OR_DASH, 0, do_gotolinecolumn, 0);
+	add_to_sclist(MMAIN, "M-G", 0, do_gotolinecolumn, 0);
+	add_to_sclist(MMAIN, "^_", 0, do_gotolinecolumn, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP|MLINTER, "^Y", 0, do_page_up, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP|MLINTER, "PgUp", KEY_PPAGE, do_page_up, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP|MLINTER, "^V", 0, do_page_down, 0);
@@ -1203,7 +1226,16 @@ void shortcut_init(void)
 	add_to_sclist(MMAIN|MHELP, "^End", CONTROL_END, to_last_line, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "M-W", 0, do_findnext, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "M-Q", 0, do_findprevious, 0);
-#ifndef NANO_TINY
+#ifdef NANO_TINY
+#ifdef ENABLE_LINENUMBERS
+	add_to_sclist(MMAIN, "M-N", 0, toggle_numbers, 0);
+#else
+	add_to_sclist(MMAIN, "M-B", 0, to_prev_word, 0);
+	add_to_sclist(MMAIN, "M-N", 0, to_next_word, 0);
+#endif
+	add_to_sclist(MMAIN, "M-D", 0, to_prev_word, 0);
+	add_to_sclist(MMAIN, "M-F", 0, to_next_word, 0);
+#else
 	add_to_sclist(MMAIN, "M-]", 0, do_find_bracket, 0);
 	add_to_sclist(MMAIN, "M-A", 0, do_mark, 0);
 	add_to_sclist(MMAIN, "^6", 0, do_mark, 0);
@@ -1218,6 +1250,7 @@ void shortcut_init(void)
 	add_to_sclist(MMAIN, "M-;", 0, run_macro, 0);
 	add_to_sclist(MMAIN, "M-U", 0, do_undo, 0);
 	add_to_sclist(MMAIN, "M-E", 0, do_redo, 0);
+	add_to_sclist(MMAIN, "M-Bsp", CONTROL_SHIFT_DELETE, chop_previous_word, 0);
 	add_to_sclist(MMAIN, "Sh-^Del", CONTROL_SHIFT_DELETE, chop_previous_word, 0);
 	add_to_sclist(MMAIN, "^Del", CONTROL_DELETE, chop_next_word, 0);
 	add_to_sclist(MMAIN, "M-Del", ALT_DELETE, zap_text, 0);
@@ -1235,14 +1268,14 @@ void shortcut_init(void)
 	add_to_sclist(MMOST|MBROWSER, "^F", 0, do_right, 0);
 #ifdef ENABLE_UTF8
 	if (using_utf8()) {
-		add_to_sclist(MMOST|MBROWSER|MHELP, "\xE2\x97\x80", KEY_LEFT, do_left, 0);
-		add_to_sclist(MMOST|MBROWSER|MHELP, "\xE2\x96\xb6", KEY_RIGHT, do_right, 0);
-		add_to_sclist(MSOME, "^\xE2\x97\x80", CONTROL_LEFT, to_prev_word, 0);
-		add_to_sclist(MSOME, "^\xE2\x96\xb6", CONTROL_RIGHT, to_next_word, 0);
+		add_to_sclist(MMOST|MBROWSER|MHELP, "\xE2\x97\x82", KEY_LEFT, do_left, 0);
+		add_to_sclist(MMOST|MBROWSER|MHELP, "\xE2\x96\xb8", KEY_RIGHT, do_right, 0);
+		add_to_sclist(MSOME, "^\xE2\x97\x82", CONTROL_LEFT, to_prev_word, 0);
+		add_to_sclist(MSOME, "^\xE2\x96\xb8", CONTROL_RIGHT, to_next_word, 0);
 #if !defined(NANO_TINY) && defined(ENABLE_MULTIBUFFER)
 		if (!on_a_vt) {
-			add_to_sclist(MMAIN, "M-\xE2\x97\x80", ALT_LEFT, switch_to_prev_buffer, 0);
-			add_to_sclist(MMAIN, "M-\xE2\x96\xb6", ALT_RIGHT, switch_to_next_buffer, 0);
+			add_to_sclist(MMAIN, "M-\xE2\x97\x82", ALT_LEFT, switch_to_prev_buffer, 0);
+			add_to_sclist(MMAIN, "M-\xE2\x96\xb8", ALT_RIGHT, switch_to_next_buffer, 0);
 		}
 #endif
 	} else
@@ -1259,12 +1292,6 @@ void shortcut_init(void)
 		}
 #endif
 	}
-#ifdef NANO_TINY
-	add_to_sclist(MMAIN, "M-B", 0, to_prev_word, 0);
-	add_to_sclist(MMAIN, "M-D", 0, to_prev_word, 0);
-	add_to_sclist(MMAIN, "M-F", 0, to_next_word, 0);
-	add_to_sclist(MMAIN, "M-N", 0, to_next_word, 0);
-#endif
 	add_to_sclist(MMOST, "M-Space", 0, to_prev_word, 0);
 	add_to_sclist(MMOST, "^Space", 0, to_next_word, 0);
 	add_to_sclist(MMOST, "^A", 0, do_home, 0);
@@ -1275,10 +1302,10 @@ void shortcut_init(void)
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "^N", 0, do_down, 0);
 #ifdef ENABLE_UTF8
 	if (using_utf8()) {
-		add_to_sclist(MMAIN|MBROWSER|MHELP, "\xE2\x96\xb2", KEY_UP, do_up, 0);
-		add_to_sclist(MMAIN|MBROWSER|MHELP, "\xE2\x96\xbc", KEY_DOWN, do_down, 0);
-		add_to_sclist(MMAIN|MBROWSER|MLINTER, "^\xE2\x96\xb2", CONTROL_UP, to_prev_block, 0);
-		add_to_sclist(MMAIN|MBROWSER|MLINTER, "^\xE2\x96\xbc", CONTROL_DOWN, to_next_block, 0);
+		add_to_sclist(MMAIN|MBROWSER|MHELP, "\xE2\x96\xb4", KEY_UP, do_up, 0);
+		add_to_sclist(MMAIN|MBROWSER|MHELP, "\xE2\x96\xbe", KEY_DOWN, do_down, 0);
+		add_to_sclist(MMAIN|MBROWSER|MLINTER, "^\xE2\x96\xb4", CONTROL_UP, to_prev_block, 0);
+		add_to_sclist(MMAIN|MBROWSER|MLINTER, "^\xE2\x96\xbe", CONTROL_DOWN, to_next_block, 0);
 	} else
 #endif
 	{
@@ -1298,8 +1325,8 @@ void shortcut_init(void)
 #ifndef NANO_TINY
 #ifdef ENABLE_UTF8
 	if (using_utf8()) {
-		add_to_sclist(MMAIN|MHELP, "M-\xE2\x96\xb2", ALT_UP, do_scroll_up, 0);
-		add_to_sclist(MMAIN|MHELP, "M-\xE2\x96\xbc", ALT_DOWN, do_scroll_down, 0);
+		add_to_sclist(MMAIN|MHELP, "M-\xE2\x96\xb4", ALT_UP, do_scroll_up, 0);
+		add_to_sclist(MMAIN|MHELP, "M-\xE2\x96\xbe", ALT_DOWN, do_scroll_down, 0);
 	} else
 #endif
 	{
@@ -1323,7 +1350,11 @@ void shortcut_init(void)
 #ifndef NANO_TINY
 	add_to_sclist(MMAIN, "M-T", 0, cut_till_eof, 0);
 	add_to_sclist(MEXECUTE, "^V", 0, cut_till_eof, 0);
-	add_to_sclist(MMAIN, "M-D", 0, do_wordlinechar_count, 0);
+	add_to_sclist(MEXECUTE, "^Z", 0, do_suspend, 0);
+	add_to_sclist(MMAIN, "^Z", 0, suggest_ctrlT_ctrlZ, 0);
+	add_to_sclist(MMAIN, "M-D", 0, count_lines_words_and_characters, 0);
+#else
+	add_to_sclist(MMAIN, "M-H", 0, do_help, 0);
 #endif
 #ifdef ENABLE_JUSTIFY
 	add_to_sclist(MMAIN, "M-J", 0, do_full_justify, 0);
@@ -1336,37 +1367,34 @@ void shortcut_init(void)
 		add_to_sclist(MMOST|MBROWSER|MHELP|MYESNO, "^L", 0, full_refresh, 0);
 	else
 		add_to_sclist(MMOST|MBROWSER|MYESNO, "^L", 0, full_refresh, 0);
-	add_to_sclist(MMAIN|MEXECUTE, "^Z", 0, do_suspend_void, 0);
 
 #ifndef NANO_TINY
 	/* Group of "Appearance" toggles. */
-	add_to_sclist((MMOST|MBROWSER|MYESNO) & ~MFINDINHELP, "M-X", 0, do_toggle_void, NO_HELP);
-	add_to_sclist(MMAIN, "M-C", 0, do_toggle_void, CONSTANT_SHOW);
-	add_to_sclist(MMAIN, "M-S", 0, do_toggle_void, SOFTWRAP);
-	add_to_sclist(MMAIN, "M-$", 0, do_toggle_void, SOFTWRAP);
+	add_to_sclist(MMAIN, "M-Z", 0, do_toggle, ZERO);
+	add_to_sclist((MMOST|MBROWSER|MYESNO) & ~MFINDINHELP, "M-X", 0, do_toggle, NO_HELP);
+	add_to_sclist(MMAIN, "M-C", 0, do_toggle, CONSTANT_SHOW);
+	add_to_sclist(MMAIN, "M-S", 0, do_toggle, SOFTWRAP);
+	add_to_sclist(MMAIN, "M-$", 0, do_toggle, SOFTWRAP);  /* Legacy keystroke. */
 #ifdef ENABLE_LINENUMBERS
-	add_to_sclist(MMAIN, "M-N", 0, do_toggle_void, LINE_NUMBERS);
-	add_to_sclist(MMAIN, "M-#", 0, do_toggle_void, LINE_NUMBERS);
+	add_to_sclist(MMAIN, "M-N", 0, do_toggle, LINE_NUMBERS);
+	add_to_sclist(MMAIN, "M-#", 0, do_toggle, LINE_NUMBERS);  /* Legacy keystroke. */
 #endif
-	add_to_sclist(MMAIN, "M-P", 0, do_toggle_void, WHITESPACE_DISPLAY);
+	add_to_sclist(MMAIN, "M-P", 0, do_toggle, WHITESPACE_DISPLAY);
 #ifdef ENABLE_COLOR
-	add_to_sclist(MMAIN, "M-Y", 0, do_toggle_void, NO_SYNTAX);
+	add_to_sclist(MMAIN, "M-Y", 0, do_toggle, NO_SYNTAX);
 #endif
 
-	/* Group of "Editing-behavior" toggles. */
-	add_to_sclist(MMAIN, "M-H", 0, do_toggle_void, SMART_HOME);
-	add_to_sclist(MMAIN, "M-I", 0, do_toggle_void, AUTOINDENT);
-	add_to_sclist(MMAIN, "M-K", 0, do_toggle_void, CUT_FROM_CURSOR);
+	/* Group of "Behavior" toggles. */
+	add_to_sclist(MMAIN, "M-H", 0, do_toggle, SMART_HOME);
+	add_to_sclist(MMAIN, "M-I", 0, do_toggle, AUTOINDENT);
+	add_to_sclist(MMAIN, "M-K", 0, do_toggle, CUT_FROM_CURSOR);
 #ifdef ENABLE_WRAPPING
-	add_to_sclist(MMAIN, "M-L", 0, do_toggle_void, BREAK_LONG_LINES);
+	add_to_sclist(MMAIN, "M-L", 0, do_toggle, BREAK_LONG_LINES);
 #endif
-	add_to_sclist(MMAIN, "M-O", 0, do_toggle_void, TABS_TO_SPACES);
-
-	/* Group of "Peripheral-feature" toggles. */
+	add_to_sclist(MMAIN, "M-O", 0, do_toggle, TABS_TO_SPACES);
 #ifdef ENABLE_MOUSE
-	add_to_sclist(MMAIN, "M-M", 0, do_toggle_void, USE_MOUSE);
+	add_to_sclist(MMAIN, "M-M", 0, do_toggle, USE_MOUSE);
 #endif
-	add_to_sclist(MMAIN, "M-Z", 0, do_toggle_void, SUSPENDABLE);
 #endif /* !NANO_TINY */
 
 	add_to_sclist(((MMOST & ~MMAIN) | MYESNO), "^C", 0, do_cancel, 0);
@@ -1377,28 +1405,26 @@ void shortcut_init(void)
 	add_to_sclist(MWHEREIS|MREPLACE, "^R", 0, flip_replace, 0);
 	add_to_sclist(MWHEREIS|MGOTOLINE, "^T", 0, flip_goto, 0);
 #ifdef ENABLE_HISTORIES
-	add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "^P", 0, get_history_older_void, 0);
-	add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "^N", 0, get_history_newer_void, 0);
+	add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "^P", 0, get_older_item, 0);
+	add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "^N", 0, get_newer_item, 0);
 #ifdef ENABLE_UTF8
 	if (using_utf8()) {
-		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "\xE2\x96\xb2", KEY_UP, get_history_older_void, 0);
-		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "\xE2\x96\xbc", KEY_DOWN, get_history_newer_void, 0);
+		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "\xE2\x96\xb4", KEY_UP, get_older_item, 0);
+		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "\xE2\x96\xbe", KEY_DOWN, get_newer_item, 0);
 	} else
 #endif
 	{
-		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "Up", KEY_UP, get_history_older_void, 0);
-		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "Down", KEY_DOWN, get_history_newer_void, 0);
+		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "Up", KEY_UP, get_older_item, 0);
+		add_to_sclist(MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE|MFINDINHELP|MEXECUTE, "Down", KEY_DOWN, get_newer_item, 0);
 	}
 #endif
 #ifdef ENABLE_JUSTIFY
 	add_to_sclist(MGOTOLINE, "^W", 0, to_para_begin, 0);
 	add_to_sclist(MGOTOLINE, "^O", 0, to_para_end, 0);
 #endif
-	add_to_sclist(MGOTOLINE, "^Y", 0, to_first_line, 0);
-	add_to_sclist(MGOTOLINE, "^V", 0, to_last_line, 0);
 	/* Some people are used to having these keystrokes in the Search menu. */
-	add_to_sclist(MWHEREIS, "^Y", 0, to_first_line, 0);
-	add_to_sclist(MWHEREIS, "^V", 0, to_last_line, 0);
+	add_to_sclist(MGOTOLINE|MWHEREIS|MFINDINHELP, "^Y", 0, to_first_line, 0);
+	add_to_sclist(MGOTOLINE|MWHEREIS|MFINDINHELP, "^V", 0, to_last_line, 0);
 #ifdef ENABLE_BROWSER
 	add_to_sclist(MWHEREISFILE, "^Y", 0, to_first_file, 0);
 	add_to_sclist(MWHEREISFILE, "^V", 0, to_last_file, 0);
@@ -1408,20 +1434,21 @@ void shortcut_init(void)
 	add_to_sclist(MBROWSER, "End", KEY_END, to_last_file, 0);
 	add_to_sclist(MBROWSER, "^Home", CONTROL_HOME, to_first_file, 0);
 	add_to_sclist(MBROWSER, "^End", CONTROL_END, to_last_file, 0);
-	add_to_sclist(MBROWSER, "^_", 0, goto_dir, 0);
+	add_to_sclist(MBROWSER, SLASH_OR_DASH, 0, goto_dir, 0);
 	add_to_sclist(MBROWSER, "M-G", 0, goto_dir, 0);
+	add_to_sclist(MBROWSER, "^_", 0, goto_dir, 0);
 #endif
 	if (ISSET(SAVE_ON_EXIT) && !ISSET(PRESERVE))
 		add_to_sclist(MWRITEFILE, "^Q", 0, discard_buffer, 0);
 #ifndef NANO_TINY
-	add_to_sclist(MWRITEFILE, "M-D", 0, dos_format_void, 0);
-	add_to_sclist(MWRITEFILE, "M-M", 0, mac_format_void, 0);
+	add_to_sclist(MWRITEFILE, "M-D", 0, dos_format, 0);
+	add_to_sclist(MWRITEFILE, "M-M", 0, mac_format, 0);
 	/* Only when not in restricted mode, allow Appending, Prepending,
 	 * making backups, and executing a command. */
 	if (!ISSET(RESTRICTED) && !ISSET(VIEW_MODE)) {
-		add_to_sclist(MWRITEFILE, "M-A", 0, append_void, 0);
-		add_to_sclist(MWRITEFILE, "M-P", 0, prepend_void, 0);
-		add_to_sclist(MWRITEFILE, "M-B", 0, backup_file_void, 0);
+		add_to_sclist(MWRITEFILE, "M-A", 0, append_it, 0);
+		add_to_sclist(MWRITEFILE, "M-P", 0, prepend_it, 0);
+		add_to_sclist(MWRITEFILE, "M-B", 0, back_it_up, 0);
 		add_to_sclist(MINSERTFILE|MEXECUTE, "^X", 0, flip_execute, 0);
 	}
 	add_to_sclist(MINSERTFILE, "M-N", 0, flip_convert, 0);
@@ -1457,11 +1484,11 @@ void shortcut_init(void)
 #endif
 	add_to_sclist(MMOST & ~MFINDINHELP, "F1", KEY_F(1), do_help, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "F2", KEY_F(2), do_exit, 0);
-	add_to_sclist(MMAIN, "F3", KEY_F(3), do_writeout_void, 0);
+	add_to_sclist(MMAIN, "F3", KEY_F(3), do_writeout, 0);
 #ifdef ENABLE_JUSTIFY
-	add_to_sclist(MMAIN, "F4", KEY_F(4), do_justify_void, 0);
+	add_to_sclist(MMAIN, "F4", KEY_F(4), do_justify, 0);
 #endif
-	add_to_sclist(MMAIN, "F5", KEY_F(5), do_insertfile_void, 0);
+	add_to_sclist(MMAIN, "F5", KEY_F(5), do_insertfile, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "F6", KEY_F(6), do_search_forward, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP|MLINTER, "F7", KEY_F(7), do_page_up, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP|MLINTER, "F8", KEY_F(8), do_page_down, 0);
@@ -1471,30 +1498,33 @@ void shortcut_init(void)
 #ifdef ENABLE_SPELLER
 	add_to_sclist(MMAIN, "F12", KEY_F(12), do_spell, 0);
 #endif
-#if defined(KEY_CANCEL) && defined(KEY_SUSPEND) && defined(KEY_SIC)
-	add_to_sclist((MMOST & ~MMAIN) | MYESNO, "", KEY_CANCEL, do_cancel, 0);
-	add_to_sclist(MMAIN|MEXECUTE, "", KEY_SUSPEND, do_suspend_void, 0);
-	add_to_sclist(MMAIN, "", KEY_SIC, do_insertfile_void, 0);
-#endif
 #ifndef NANO_TINY
+	add_to_sclist((MMOST & ~MMAIN) | MYESNO, "", KEY_CANCEL, do_cancel, 0);
+	add_to_sclist(MMAIN, "", KEY_SIC, do_insertfile, 0);
 	/* Catch and ignore bracketed paste marker keys. */
 	add_to_sclist(MMOST|MBROWSER|MHELP|MYESNO, "", BRACKETED_PASTE_MARKER, do_nothing, 0);
+#else
+	add_to_sclist(MMOST|MBROWSER|MHELP|MYESNO, "", KEY_FRESH, full_refresh, 0);
 #endif
 }
 
 #ifndef NANO_TINY
 /* Return the textual description that corresponds to the given flag. */
-const char *flagtostr(int flag)
+const char *epithet_of_flag(int flag)
 {
 	switch (flag) {
-		case NO_HELP:
+		case ZERO:
 			/* TRANSLATORS: The next thirteen strings are toggle descriptions;
 			 * they are best kept shorter than 40 characters, but may be longer. */
+			return N_("Hidden interface");
+		case NO_HELP:
 			return N_("Help mode");
 		case CONSTANT_SHOW:
 			return N_("Constant cursor position display");
 		case SOFTWRAP:
 			return N_("Soft wrapping of overlong lines");
+		case LINE_NUMBERS:
+			return N_("Line numbering");
 		case WHITESPACE_DISPLAY:
 			return N_("Whitespace display");
 		case NO_SYNTAX:
@@ -1511,13 +1541,8 @@ const char *flagtostr(int flag)
 			return N_("Conversion of typed tabs to spaces");
 		case USE_MOUSE:
 			return N_("Mouse support");
-		case SUSPENDABLE:
-			return N_("Suspension");
-		case LINE_NUMBERS:
-			return N_("Line numbering");
 		default:
-			die("Bad toggle -- please report a bug\n");
-			return "";
+			return "Ehm...";
 	}
 }
 #endif /* !NANO_TINY */

src/help.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   help.c  --  This file is part of GNU nano.                           *
  *                                                                        *
- *   Copyright (C) 2000-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2000-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2017 Rishabh Dave                                      *
  *   Copyright (C) 2014-2019 Benno Schulenberg                            *
  *                                                                        *
@@ -50,7 +50,7 @@ void help_init(void)
 	char *ptr;
 
 	/* First, set up the initial help text for the current function. */
-	if (currmenu == MWHEREIS || currmenu == MREPLACE || currmenu == MREPLACEWITH) {
+	if (currmenu & (MWHEREIS|MREPLACE|MREPLACEWITH)) {
 		htx[0] = N_("Search Command Help Text\n\n "
 				"Enter the words or characters you would like to "
 				"search for, and then press Enter.  If there is a "
@@ -234,13 +234,13 @@ void help_init(void)
 		size_t onoff_len = strlen(_("enable/disable"));
 
 		for (s = sclist; s != NULL; s = s->next)
-			if (s->func == do_toggle_void)
-				allocsize += strlen(_(flagtostr(s->toggle))) + onoff_len + 9;
+			if (s->func == do_toggle)
+				allocsize += strlen(_(epithet_of_flag(s->toggle))) + onoff_len + 9;
 	}
 #endif
 
 	/* Allocate memory for the help text. */
-	help_text = charalloc(allocsize + 1);
+	help_text = nmalloc(allocsize + 1);
 
 	/* Now add the text we want. */
 	strcpy(help_text, htx[0]);
@@ -302,15 +302,16 @@ void help_init(void)
 			counter++;
 			for (s = sclist; s != NULL; s = s->next)
 				if (s->toggle && s->ordinal == counter) {
-					ptr += sprintf(ptr, "%s\t\t %s %s\n", (s->menus == MMAIN ? s->keystr : ""),
-								_(flagtostr(s->toggle)), _("enable/disable"));
-					if (s->toggle == NO_SYNTAX || s->toggle == TABS_TO_SPACES)
+					ptr += sprintf(ptr, "%s\t\t %s %s\n", (s->menus & MMAIN ? s->keystr : ""),
+								_(epithet_of_flag(s->toggle)), _("enable/disable"));
+					/* Add a blank like between two groups. */
+					if (s->toggle == NO_SYNTAX)
 						ptr += sprintf(ptr, "\n");
 					break;
 				}
 		}
 	}
-#endif /* !NANO_TINY */
+#endif
 }
 
 /* Hard-wrap the concatenated help text, and write it into a new buffer. */
@@ -323,6 +324,13 @@ void wrap_help_text_into_buffer(void)
 
 	make_new_buffer();
 
+	/* Ensure there is a blank line at the top of the text, for esthetics. */
+	if ((ISSET(MINIBAR) || !ISSET(EMPTY_LINE)) && LINES > 6) {
+		openfile->current->data = mallocstrcpy(openfile->current->data, " ");
+		openfile->current->next = make_new_node(openfile->current);
+		openfile->current = openfile->current->next;
+	}
+
 	/* Copy the help text into the just-created new buffer. */
 	while (*ptr != '\0') {
 		int length, shim;
@@ -403,8 +411,9 @@ void show_help(void)
 	memcpy(stash, flags, sizeof(flags));
 
 	/* Ensure that the help screen's shortcut list can be displayed. */
-	if (ISSET(NO_HELP) && LINES > 4) {
+	if (ISSET(NO_HELP) || ISSET(ZERO)) {
 		UNSET(NO_HELP);
+		UNSET(ZERO);
 		window_init();
 	} else
 		blank_statusbar();
@@ -415,10 +424,8 @@ void show_help(void)
 	UNSET(USE_REGEXP);
 
 	UNSET(WHITESPACE_DISPLAY);
-	UNSET(NOREAD_MODE);
 
 #ifdef ENABLE_LINENUMBERS
-	UNSET(LINE_NUMBERS);
 	editwincols = COLS - thebar;
 	margin = 0;
 #endif
@@ -457,9 +464,12 @@ void show_help(void)
 
 		/* Show the cursor when we searched and found something. */
 		kbinput = get_kbinput(edit, didfind == 1 || ISSET(SHOW_CURSOR));
+
 		didfind = 0;
 
 #ifndef NANO_TINY
+		spotlighted = FALSE;
+
 		if (bracketed_paste || kbinput == BRACKETED_PASTE_MARKER) {
 			beep();
 			continue;
@@ -475,14 +485,13 @@ void show_help(void)
 		} else if (func == do_up || func == do_scroll_up) {
 			do_scroll_up();
 		} else if (func == do_down || func == do_scroll_down) {
-			if (openfile->edittop->lineno + editwinrows - 1 <
-								openfile->filebot->lineno)
+			if (openfile->edittop->lineno + editwinrows - 1 < openfile->filebot->lineno)
 				do_scroll_down();
 		} else if (func == do_page_up || func == do_page_down ||
-					func == to_first_line || func == to_last_line ||
-					func == do_findprevious || func == do_findnext) {
+					func == to_first_line || func == to_last_line) {
 			func();
-		} else if (func == do_search_forward || func == do_search_backward) {
+		} else if (func == do_search_backward || func == do_search_forward ||
+					func == do_findprevious || func == do_findnext) {
 			func();
 			bottombars(MHELP);
 #ifdef ENABLE_NANORC
@@ -503,7 +512,6 @@ void show_help(void)
 		} else
 			unbound_key(kbinput);
 
-		currmenu = MHELP;
 		edit_refresh();
 
 		location = 0;
@@ -541,16 +549,15 @@ void show_help(void)
 
 	curs_set(0);
 
-	if (ISSET(NO_HELP)) {
-		currmenu = oldmenu;
+	if (ISSET(NO_HELP) || ISSET(ZERO))
 		window_init();
-	} else {
+	else
 		blank_statusbar();
-		bottombars(oldmenu);
-	}
+
+	bottombars(oldmenu);
 
 #ifdef ENABLE_BROWSER
-	if (oldmenu == MBROWSER || oldmenu == MWHEREISFILE || oldmenu == MGOTODIR)
+	if (oldmenu & (MBROWSER|MWHEREISFILE|MGOTODIR))
 		browser_refresh();
 	else
 #endif
@@ -568,8 +575,8 @@ void do_help(void)
 #ifdef ENABLE_HELP
 	show_help();
 #else
-	if (currmenu == MMAIN)
-		say_there_is_no_help();
+	if (currmenu & (MMAIN|MBROWSER))
+		statusbar(_("^W = Ctrl+W    M-W = Alt+W"));
 	else
 		beep();
 #endif

src/history.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   history.c  --  This file is part of GNU nano.                        *
  *                                                                        *
- *   Copyright (C) 2003-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2003-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2016, 2017, 2019 Benno Schulenberg                     *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
@@ -63,21 +63,21 @@ void history_init(void)
 	executebot = execute_history;
 }
 
-/* Set the current position in the given history list to the bottom. */
-void history_reset(const linestruct *list)
+/* Reset the pointer into the history list that contains item to the bottom. */
+void reset_history_pointer_for(const linestruct *item)
 {
-	if (list == search_history)
+	if (item == search_history)
 		search_history = searchbot;
-	else if (list == replace_history)
+	else if (item == replace_history)
 		replace_history = replacebot;
-	else if (list == execute_history)
+	else if (item == execute_history)
 		execute_history = executebot;
 }
 
 /* Return from the history list that starts at start and ends at end
  * the first node that contains the first len characters of the given
  * text, or NULL if there is no such node. */
-linestruct *find_history(const linestruct *start, const linestruct *end,
+linestruct *find_in_history(const linestruct *start, const linestruct *end,
 		const char *text, size_t len)
 {
 	const linestruct *item;
@@ -92,9 +92,10 @@ linestruct *find_history(const linestruct *start, const linestruct *end,
 
 /* Update a history list (the one in which item is the current position)
  * with a fresh string text.  That is: add text, or move it to the end. */
-void update_history(linestruct **item, const char *text)
+void update_history(linestruct **item, const char *text, bool avoid_duplicates)
 {
-	linestruct **htop = NULL, **hbot = NULL, *thesame;
+	linestruct **htop = NULL, **hbot = NULL;
+	linestruct *thesame = NULL;
 
 	if (*item == search_history) {
 		htop = &searchtop;
@@ -107,11 +108,12 @@ void update_history(linestruct **item, const char *text)
 		hbot = &executebot;
 	}
 
-	/* See if the string is already in the history. */
-	thesame = find_history(*hbot, *htop, text, HIGHEST_POSITIVE);
+	/* When requested, check if the string is already in the history. */
+	if (avoid_duplicates)
+		thesame = find_in_history(*hbot, *htop, text, HIGHEST_POSITIVE);
 
 	/* If an identical string was found, delete that item. */
-	if (thesame != NULL) {
+	if (thesame) {
 		linestruct *after = thesame->next;
 
 		/* If the string is at the head of the list, move the head. */
@@ -145,98 +147,67 @@ void update_history(linestruct **item, const char *text)
 	*item = *hbot;
 }
 
-/* Move h to the string in the history list just before it, and return
- * that string.  If there isn't one, don't move h and return NULL. */
-char *get_history_older(linestruct **h)
-{
-	if ((*h)->prev == NULL)
-		return NULL;
-
-	*h = (*h)->prev;
-
-	return (*h)->data;
-}
-
-/* Move h to the string in the history list just after it, and return
- * that string.  If there isn't one, don't move h and return NULL. */
-char *get_history_newer(linestruct **h)
-{
-	if ((*h)->next == NULL)
-		return NULL;
-
-	*h = (*h)->next;
-
-	return (*h)->data;
-}
-
-/* Two empty placeholder functions. */
-void get_history_older_void(void)
-{
-}
-void get_history_newer_void(void)
-{
-}
-
 #ifdef ENABLE_TABCOMP
-/* Go backward through one of three history lists, starting at its item h,
- * searching for a string that is a tab completion of the given string s,
- * looking at only the first len characters of s.  When found, make h point
- * at it and return that string; otherwise, don't move h and return s. */
-char *get_history_completion(linestruct **h, char *s, size_t len)
+/* Go backward through one of three history lists, starting at item *here,
+ * searching for a string that is a tab completion of the given string,
+ * looking at only its first len characters.  When found, make *here point
+ * at the item and return its string; otherwise, just return the string. */
+char *get_history_completion(linestruct **here, char *string, size_t len)
 {
-	linestruct *htop = NULL, *hbot = NULL, *p;
+	linestruct *htop = NULL, *hbot = NULL;
+	linestruct *item;
 
-	if (*h == search_history) {
+	if (*here == search_history) {
 		htop = searchtop;
 		hbot = searchbot;
-	} else if (*h == replace_history) {
+	} else if (*here == replace_history) {
 		htop = replacetop;
 		hbot = replacebot;
-	} else if (*h == execute_history) {
+	} else if (*here == execute_history) {
 		htop = executetop;
 		hbot = executebot;
 	}
 
 	/* First search from the current position to the top of the list
 	 * for a match of len characters.  Skip over an exact match. */
-	p = find_history((*h)->prev, htop, s, len);
+	item = find_in_history((*here)->prev, htop, string, len);
 
-	while (p != NULL && strcmp(p->data, s) == 0)
-		p = find_history(p->prev, htop, s, len);
+	while (item != NULL && strcmp(item->data, string) == 0)
+		item = find_in_history(item->prev, htop, string, len);
 
-	if (p != NULL) {
-		*h = p;
-		return mallocstrcpy(s, (*h)->data);
+	if (item) {
+		*here = item;
+		return mallocstrcpy(string, item->data);
 	}
 
 	/* Now search from the bottom of the list to the original position. */
-	p = find_history(hbot, *h, s, len);
+	item = find_in_history(hbot, *here, string, len);
 
-	while (p != NULL && strcmp(p->data, s) == 0)
-		p = find_history(p->prev, *h, s, len);
+	while (item != NULL && strcmp(item->data, string) == 0)
+		item = find_in_history(item->prev, *here, string, len);
 
-	if (p != NULL) {
-		*h = p;
-		return mallocstrcpy(s, (*h)->data);
+	if (item) {
+		*here = item;
+		return mallocstrcpy(string, item->data);
 	}
 
 	/* When no useful match was found, simply return the given string. */
-	return (char *)s;
+	return (char *)string;
 }
 #endif /* ENABLE_TABCOMP */
 
 /* Check whether we have or could make a directory for history files. */
 bool have_statedir(void)
 {
-	struct stat dirstat;
 	const char *xdgdatadir;
+	struct stat dirinfo;
 
 	get_homedir();
 
 	if (homedir != NULL) {
 		statedir = concatenate(homedir, "/.nano/");
 
-		if (stat(statedir, &dirstat) == 0 && S_ISDIR(dirstat.st_mode)) {
+		if (stat(statedir, &dirinfo) == 0 && S_ISDIR(dirinfo.st_mode)) {
 			poshistname = concatenate(statedir, POSITION_HISTORY);
 			return TRUE;
 		}
@@ -253,7 +224,7 @@ bool have_statedir(void)
 	else
 		statedir = concatenate(homedir, "/.local/share/nano/");
 
-	if (stat(statedir, &dirstat) == -1) {
+	if (stat(statedir, &dirinfo) == -1) {
 		if (xdgdatadir == NULL) {
 			char *statepath = concatenate(homedir, "/.local");
 			mkdir(statepath, S_IRWXU | S_IRWXG | S_IRWXO);
@@ -269,7 +240,7 @@ bool have_statedir(void)
 								statedir, strerror(errno));
 			return FALSE;
 		}
-	} else if (!S_ISDIR(dirstat.st_mode)) {
+	} else if (!S_ISDIR(dirinfo.st_mode)) {
 		jot_error(N_("Path %s is not a directory and needs to be.\n"
 								"Nano will be unable to load or save "
 								"search history or cursor positions.\n"),
@@ -299,17 +270,17 @@ void load_history(void)
 	}
 
 	linestruct **history = &search_history;
-	char *line = NULL;
-	size_t buf_len = 0;
+	char *stanza = NULL;
+	size_t dummy = 0;
 	ssize_t read;
 
 	/* Load the three history lists (first search, then replace, then execute)
 	 * from oldest entry to newest.  Between two lists there is an empty line. */
-	while ((read = getline(&line, &buf_len, histfile)) > 0) {
-		line[--read] = '\0';
+	while ((read = getline(&stanza, &dummy, histfile)) > 0) {
+		stanza[--read] = '\0';
 		if (read > 0) {
-			recode_NUL_to_LF(line, read);
-			update_history(history, line);
+			recode_NUL_to_LF(stanza, read);
+			update_history(history, stanza, IGNORE_DUPLICATES);
 		} else if (history == &search_history)
 			history = &replace_history;
 		else
@@ -320,7 +291,7 @@ void load_history(void)
 		jot_error(N_("Error reading %s: %s"), histname, strerror(errno));
 
 	free(histname);
-	free(line);
+	free(stanza);
 
 	/* Reading in the lists has marked them as changed; undo this side effect. */
 	history_changed = FALSE;
@@ -361,20 +332,21 @@ void save_history(void)
 	histfile = fopen(histname, "wb");
 
 	if (histfile == NULL) {
-		jot_error(N_("Error writing %s: %s\n"), histname, strerror(errno));
+		jot_error(N_("Error writing %s: %s"), histname, strerror(errno));
 		free(histname);
 		return;
 	}
 
 	/* Don't allow others to read or write the history file. */
-	chmod(histname, S_IRUSR | S_IWUSR);
+	if (chmod(histname, S_IRUSR | S_IWUSR) < 0)
+		jot_error(N_("Cannot limit permissions on %s: %s"), histname, strerror(errno));
 
 	if (!write_list(searchtop, histfile) || !write_list(replacetop, histfile) ||
 											!write_list(executetop, histfile))
-		jot_error(N_("Error writing %s: %s\n"), histname, strerror(errno));
+		jot_error(N_("Error writing %s: %s"), histname, strerror(errno));
 
 	if (fclose(histfile) == EOF)
-		jot_error(N_("Error writing %s: %s\n"), histname, strerror(errno));
+		jot_error(N_("Error writing %s: %s"), histname, strerror(errno));
 
 	free(histname);
 }
@@ -393,43 +365,46 @@ void load_poshistory(void)
 	if (histfile == NULL)
 		return;
 
-	char *line = NULL, *lineptr, *xptr;
-	size_t buf_len = 0;
-	ssize_t read, count = 0;
+	poshiststruct *lastitem = NULL;
+	poshiststruct *newitem;
+	char *lineptr, *columnptr;
+	char *stanza = NULL;
 	struct stat fileinfo;
-	poshiststruct *record_ptr = NULL, *newrecord;
+	size_t dummy = 0;
+	ssize_t count = 0;
+	ssize_t read;
 
 	/* Read and parse each line, and store the extracted data. */
-	while ((read = getline(&line, &buf_len, histfile)) > 5) {
+	while ((read = getline(&stanza, &dummy, histfile)) > 5) {
 		/* Decode NULs as embedded newlines. */
-		recode_NUL_to_LF(line, read);
+		recode_NUL_to_LF(stanza, read);
 
-		/* Find where the x index and line number are in the line. */
-		xptr = revstrstr(line, " ", line + read - 3);
-		if (xptr == NULL)
+		/* Find the spaces before column number and line number. */
+		columnptr = revstrstr(stanza, " ", stanza + read - 3);
+		if (columnptr == NULL)
 			continue;
-		lineptr = revstrstr(line, " ", xptr - 2);
+		lineptr = revstrstr(stanza, " ", columnptr - 2);
 		if (lineptr == NULL)
 			continue;
 
 		/* Now separate the three elements of the line. */
-		*(xptr++) = '\0';
+		*(columnptr++) = '\0';
 		*(lineptr++) = '\0';
 
 		/* Create a new position record. */
-		newrecord = (poshiststruct *)nmalloc(sizeof(poshiststruct));
-		newrecord->filename = copy_of(line);
-		newrecord->lineno = atoi(lineptr);
-		newrecord->xno = atoi(xptr);
-		newrecord->next = NULL;
+		newitem = nmalloc(sizeof(poshiststruct));
+		newitem->filename = copy_of(stanza);
+		newitem->linenumber = atoi(lineptr);
+		newitem->columnnumber = atoi(columnptr);
+		newitem->next = NULL;
 
 		/* Add the record to the list. */
 		if (position_history == NULL)
-			position_history = newrecord;
+			position_history = newitem;
 		else
-			record_ptr->next = newrecord;
+			lastitem->next = newitem;
 
-		record_ptr = newrecord;
+		lastitem = newitem;
 
 		/* Impose a limit, so the file will not grow indefinitely. */
 		if (++count > 200) {
@@ -445,38 +420,37 @@ void load_poshistory(void)
 	if (fclose(histfile) == EOF)
 		jot_error(N_("Error reading %s: %s"), poshistname, strerror(errno));
 
-	free(line);
+	free(stanza);
 
-	if (stat(poshistname, &fileinfo) == -1)
-		jot_error(N_("Error reading %s: %s\n"), poshistname, strerror(errno));
-	else
+	if (stat(poshistname, &fileinfo) == 0)
 		latest_timestamp = fileinfo.st_mtime;
 }
 
 /* Save the recorded cursor positions for files that were edited. */
 void save_poshistory(void)
 {
-	poshiststruct *posptr;
-	struct stat fileinfo;
 	FILE *histfile = fopen(poshistname, "wb");
+	struct stat fileinfo;
+	poshiststruct *item;
 
 	if (histfile == NULL) {
-		jot_error(N_("Error writing %s: %s\n"), poshistname, strerror(errno));
+		jot_error(N_("Error writing %s: %s"), poshistname, strerror(errno));
 		return;
 	}
 
 	/* Don't allow others to read or write the history file. */
-	chmod(poshistname, S_IRUSR | S_IWUSR);
+	if (chmod(poshistname, S_IRUSR | S_IWUSR) < 0)
+		jot_error(N_("Cannot limit permissions on %s: %s"), poshistname, strerror(errno));
 
-	for (posptr = position_history; posptr != NULL; posptr = posptr->next) {
+	for (item = position_history; item != NULL; item = item->next) {
 		char *path_and_place;
 		size_t length;
 
 		/* Assume 20 decimal positions each for line and column number,
 		 * plus two spaces, plus the line feed, plus the null byte. */
-		path_and_place = charalloc(strlen(posptr->filename) + 44);
+		path_and_place = nmalloc(strlen(item->filename) + 44);
 		sprintf(path_and_place, "%s %zd %zd\n",
-								posptr->filename, posptr->lineno, posptr->xno);
+								item->filename, item->linenumber, item->columnnumber);
 		length = strlen(path_and_place);
 
 		/* Encode newlines in filenames as NULs. */
@@ -485,48 +459,45 @@ void save_poshistory(void)
 		path_and_place[length - 1] = '\n';
 
 		if (fwrite(path_and_place, sizeof(char), length, histfile) < length)
-			jot_error(N_("Error writing %s: %s\n"), poshistname, strerror(errno));
+			jot_error(N_("Error writing %s: %s"), poshistname, strerror(errno));
 
 		free(path_and_place);
 	}
 
 	if (fclose(histfile) == EOF)
-		jot_error(N_("Error writing %s: %s\n"), poshistname, strerror(errno));
+		jot_error(N_("Error writing %s: %s"), poshistname, strerror(errno));
 
-	if (stat(poshistname, &fileinfo) == -1)
-		jot_error(N_("Error writing %s: %s\n"), poshistname, strerror(errno));
-	else
+	if (stat(poshistname, &fileinfo) == 0)
 		latest_timestamp = fileinfo.st_mtime;
 }
 
 /* Reload the position history file if it has been modified since last load. */
 void reload_positions_if_needed(void)
 {
+	poshiststruct *item, *nextone;
 	struct stat fileinfo;
 
-	if (stat(poshistname, &fileinfo) == -1)
-		jot_error(N_("Error reading %s: %s\n"), poshistname, strerror(errno));
-	else if (fileinfo.st_mtime != latest_timestamp) {
-		poshiststruct *item, *nextone;
+	if (stat(poshistname, &fileinfo) != 0 || fileinfo.st_mtime == latest_timestamp)
+		return;
 
-		for (item = position_history; item != NULL; item = nextone) {
-			nextone = item->next;
-			free(item->filename);
-			free(item);
-		}
-
-		position_history = NULL;
-
-		load_poshistory();
+	for (item = position_history; item != NULL; item = nextone) {
+		nextone = item->next;
+		free(item->filename);
+		free(item);
 	}
+
+	position_history = NULL;
+
+	load_poshistory();
 }
 
 /* Update the recorded last file positions with the current position in the
  * current buffer.  If no existing entry is found, add a new one at the end. */
 void update_poshistory(void)
 {
-	poshiststruct *posptr, *theone, *posprev = NULL;
 	char *fullpath = get_full_path(openfile->filename);
+	poshiststruct *previous = NULL;
+	poshiststruct *item, *theone;
 
 	if (fullpath == NULL || openfile->filename[0] == '\0') {
 		free(fullpath);
@@ -536,51 +507,51 @@ void update_poshistory(void)
 	reload_positions_if_needed();
 
 	/* Look for a matching filename in the list. */
-	for (posptr = position_history; posptr != NULL; posptr = posptr->next) {
-		if (!strcmp(posptr->filename, fullpath))
+	for (item = position_history; item != NULL; item = item->next) {
+		if (!strcmp(item->filename, fullpath))
 			break;
-		posprev = posptr;
+		previous = item;
 	}
 
 	/* Don't record files that have the default cursor position. */
 	if (openfile->current->lineno == 1 && openfile->current_x == 0) {
-		if (posptr != NULL) {
-			if (posprev == NULL)
-				position_history = posptr->next;
+		if (item != NULL) {
+			if (previous == NULL)
+				position_history = item->next;
 			else
-				posprev->next = posptr->next;
-			free(posptr->filename);
-			free(posptr);
+				previous->next = item->next;
+			free(item->filename);
+			free(item);
 			save_poshistory();
 		}
 		free(fullpath);
 		return;
 	}
 
-	theone = posptr;
+	theone = item;
 
 	/* If we didn't find it, make a new node; otherwise, if we're
 	 * not at the end, move the matching one to the end. */
 	if (theone == NULL) {
-		theone = (poshiststruct *)nmalloc(sizeof(poshiststruct));
+		theone = nmalloc(sizeof(poshiststruct));
 		theone->filename = copy_of(fullpath);
 		if (position_history == NULL)
 			position_history = theone;
 		else
-			posprev->next = theone;
-	} else if (posptr->next != NULL) {
-		if (posprev == NULL)
-			position_history = posptr->next;
+			previous->next = theone;
+	} else if (item->next != NULL) {
+		if (previous == NULL)
+			position_history = item->next;
 		else
-			posprev->next = posptr->next;
-		while (posptr->next != NULL)
-			posptr = posptr->next;
-		posptr->next = theone;
+			previous->next = item->next;
+		while (item->next != NULL)
+			item = item->next;
+		item->next = theone;
 	}
 
 	/* Store the last cursor position. */
-	theone->lineno = openfile->current->lineno;
-	theone->xno = xplustabs() + 1;
+	theone->linenumber = openfile->current->lineno;
+	theone->columnnumber = xplustabs() + 1;
 	theone->next = NULL;
 
 	free(fullpath);
@@ -593,25 +564,25 @@ void update_poshistory(void)
  * set line and column to the retrieved values. */
 bool has_old_position(const char *file, ssize_t *line, ssize_t *column)
 {
-	poshiststruct *posptr;
 	char *fullpath = get_full_path(file);
+	poshiststruct *item;
 
 	if (fullpath == NULL)
 		return FALSE;
 
 	reload_positions_if_needed();
 
-	posptr = position_history;
-	while (posptr != NULL && strcmp(posptr->filename, fullpath) != 0)
-		posptr = posptr->next;
+	item = position_history;
+	while (item != NULL && strcmp(item->filename, fullpath) != 0)
+		item = item->next;
 
 	free(fullpath);
 
-	if (posptr == NULL)
+	if (item == NULL)
 		return FALSE;
 
-	*line = posptr->lineno;
-	*column = posptr->xno;
+	*line = item->linenumber;
+	*column = item->columnnumber;
 	return TRUE;
 }
 #endif /* ENABLE_HISTORIES */

src/move.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   move.c  --  This file is part of GNU nano.                           *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2014-2018 Benno Schulenberg                            *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
@@ -115,6 +115,7 @@ void do_page_up(void)
 	int mustmove = (editwinrows < 3) ? 1 : editwinrows - 2;
 	size_t leftedge, target_column;
 
+#ifndef NANO_TINY
 	/* If we're not in smooth scrolling mode, put the cursor at the
 	 * beginning of the top line of the edit window, as Pico does. */
 	if (ISSET(JUMPY_SCROLLING)) {
@@ -123,6 +124,7 @@ void do_page_up(void)
 		openfile->current_y = 0;
 		target_column = 0;
 	} else
+#endif
 		get_edge_and_target(&leftedge, &target_column);
 
 	/* Move up the required number of lines or chunks.  If we can't, we're
@@ -145,6 +147,7 @@ void do_page_down(void)
 	int mustmove = (editwinrows < 3) ? 1 : editwinrows - 2;
 	size_t leftedge, target_column;
 
+#ifndef NANO_TINY
 	/* If we're not in smooth scrolling mode, put the cursor at the
 	 * beginning of the top line of the edit window, as Pico does. */
 	if (ISSET(JUMPY_SCROLLING)) {
@@ -153,6 +156,7 @@ void do_page_down(void)
 		openfile->current_y = 0;
 		target_column = 0;
 	} else
+#endif
 		get_edge_and_target(&leftedge, &target_column);
 
 	/* Move down the required number of lines or chunks.  If we can't, we're
@@ -234,8 +238,8 @@ void to_prev_block(void)
 		seen_text = seen_text || is_text;
 	}
 
-	/* Step forward one line again if this one is blank. */
-	if (openfile->current->next != NULL &&
+	/* Step forward one line again if we passed text but this line is blank. */
+	if (seen_text && openfile->current->next != NULL &&
 				white_string(openfile->current->data))
 		openfile->current = openfile->current->next;
 
@@ -261,10 +265,10 @@ void to_next_block(void)
 	edit_redraw(was_current, CENTERING);
 }
 
-/* Move to the previous word.  If allow_punct is TRUE, treat punctuation
- * as part of a word. */
-void do_prev_word(bool allow_punct)
+/* Move to the previous word. */
+void do_prev_word(void)
 {
+	bool punctuation_as_letters = ISSET(WORD_BOUNDS);
 	bool seen_a_word = FALSE, step_forward = FALSE;
 
 	/* Move backward until we pass over the start of a word. */
@@ -282,11 +286,15 @@ void do_prev_word(bool allow_punct)
 												openfile->current_x);
 
 		if (is_word_char(openfile->current->data + openfile->current_x,
-								allow_punct)) {
+								punctuation_as_letters)) {
 			seen_a_word = TRUE;
 			/* If at the head of a line now, this surely is a word start. */
 			if (openfile->current_x == 0)
 				break;
+#ifdef ENABLE_UTF8
+		} else if (is_zerowidth(openfile->current->data + openfile->current_x)) {
+			; /* skip */
+#endif
 		} else if (seen_a_word) {
 			/* This is space now: we've overshot the start of the word. */
 			step_forward = TRUE;
@@ -301,12 +309,12 @@ void do_prev_word(bool allow_punct)
 }
 
 /* Move to the next word.  If after_ends is TRUE, stop at the ends of words
- * instead of their beginnings.  If allow_punct is TRUE, treat punctuation as
- * part of a word.  Return TRUE if we started on a word, and FALSE otherwise. */
-bool do_next_word(bool after_ends, bool allow_punct)
+ * instead of at their beginnings.  Return TRUE if we started on a word. */
+bool do_next_word(bool after_ends)
 {
+	bool punctuation_as_letters = ISSET(WORD_BOUNDS);
 	bool started_on_word = is_word_char(openfile->current->data +
-								openfile->current_x, allow_punct);
+								openfile->current_x, punctuation_as_letters);
 	bool seen_space = !started_on_word;
 #ifndef NANO_TINY
 	bool seen_word = started_on_word;
@@ -333,17 +341,26 @@ bool do_next_word(bool after_ends, bool allow_punct)
 			/* If this is a word character, continue; else it's a separator,
 			 * and if we've already seen a word, then it's a word end. */
 			if (is_word_char(openfile->current->data + openfile->current_x,
-								allow_punct))
+								punctuation_as_letters))
 				seen_word = TRUE;
+#ifdef ENABLE_UTF8
+			else if (is_zerowidth(openfile->current->data + openfile->current_x))
+				; /* skip */
+#endif
 			else if (seen_word)
 				break;
 		} else
 #endif
 		{
+#ifdef ENABLE_UTF8
+			if (is_zerowidth(openfile->current->data + openfile->current_x))
+				; /* skip */
+			else
+#endif
 			/* If this is not a word character, then it's a separator; else
 			 * if we've already seen a separator, then it's a word start. */
 			if (!is_word_char(openfile->current->data + openfile->current_x,
-								allow_punct))
+								punctuation_as_letters))
 				seen_space = TRUE;
 			else if (seen_space)
 				break;
@@ -353,25 +370,23 @@ bool do_next_word(bool after_ends, bool allow_punct)
 	return started_on_word;
 }
 
-/* Move to the previous word in the file, treating punctuation as part of a
- * word if the WORD_BOUNDS flag is set, and update the screen afterwards. */
+/* Move to the previous word in the file, and update the screen afterwards. */
 void to_prev_word(void)
 {
 	linestruct *was_current = openfile->current;
 
-	do_prev_word(ISSET(WORD_BOUNDS));
+	do_prev_word();
 
 	edit_redraw(was_current, FLOWING);
 }
 
 /* Move to the next word in the file.  If the AFTER_ENDS flag is set, stop
- * at word ends instead of beginnings.  If the WORD_BOUNDS flag is set, treat
- * punctuation as part of a word.  Update the screen afterwards. */
+ * at word ends instead of beginnings.  Update the screen afterwards. */
 void to_next_word(void)
 {
 	linestruct *was_current = openfile->current;
 
-	do_next_word(ISSET(AFTER_ENDS), ISSET(WORD_BOUNDS));
+	do_next_word(ISSET(AFTER_ENDS));
 
 	edit_redraw(was_current, FLOWING);
 }
@@ -577,10 +592,16 @@ void do_left(void)
 {
 	linestruct *was_current = openfile->current;
 
-	if (openfile->current_x > 0)
+	if (openfile->current_x > 0) {
 		openfile->current_x = step_left(openfile->current->data,
 												openfile->current_x);
-	else if (openfile->current != openfile->filetop) {
+#ifdef ENABLE_UTF8
+		while (openfile->current_x > 0 &&
+					is_zerowidth(openfile->current->data + openfile->current_x))
+			openfile->current_x = step_left(openfile->current->data,
+												openfile->current_x);
+#endif
+	} else if (openfile->current != openfile->filetop) {
 		openfile->current = openfile->current->prev;
 		openfile->current_x = strlen(openfile->current->data);
 	}
@@ -593,10 +614,16 @@ void do_right(void)
 {
 	linestruct *was_current = openfile->current;
 
-	if (openfile->current->data[openfile->current_x] != '\0')
+	if (openfile->current->data[openfile->current_x] != '\0') {
 		openfile->current_x = step_right(openfile->current->data,
 												openfile->current_x);
-	else if (openfile->current != openfile->filebot) {
+#ifdef ENABLE_UTF8
+		while (openfile->current->data[openfile->current_x] != '\0' &&
+					is_zerowidth(openfile->current->data + openfile->current_x))
+			openfile->current_x = step_right(openfile->current->data,
+												openfile->current_x);
+#endif
+	} else if (openfile->current != openfile->filebot) {
 		openfile->current = openfile->current->next;
 		openfile->current_x = 0;
 	}

src/prompt.c

@@ -1,8 +1,8 @@
 /**************************************************************************
  *   prompt.c  --  This file is part of GNU nano.                         *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
- *   Copyright (C) 2016, 2018 Benno Schulenberg                           *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2016, 2018, 2020 Benno Schulenberg                     *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -57,9 +57,18 @@ void do_statusbar_next_word(void)
 			 * and if we've already seen a word, then it's a word end. */
 			if (is_word_char(answer + typing_x, FALSE))
 				seen_word = TRUE;
+#ifdef ENABLE_UTF8
+			else if (is_zerowidth(answer + typing_x))
+				; /* skip */
+#endif
 			else if (seen_word)
 				break;
 		} else {
+#ifdef ENABLE_UTF8
+			if (is_zerowidth(answer + typing_x))
+				; /* skip */
+			else
+#endif
 			/* If this is not a word character, then it's a separator; else
 			 * if we've already seen a separator, then it's a word start. */
 			if (!is_word_char(answer + typing_x, FALSE))
@@ -81,6 +90,10 @@ void do_statusbar_prev_word(void)
 
 		if (is_word_char(answer + typing_x, FALSE))
 			seen_a_word = TRUE;
+#ifdef ENABLE_UTF8
+		else if (is_zerowidth(answer + typing_x))
+			; /* skip */
+#endif
 		else if (seen_a_word) {
 			/* This is space now: we've overshot the start of the word. */
 			step_forward = TRUE;
@@ -97,15 +110,25 @@ void do_statusbar_prev_word(void)
 /* Move left one character in the answer. */
 void do_statusbar_left(void)
 {
-	if (typing_x > 0)
+	if (typing_x > 0) {
 		typing_x = step_left(answer, typing_x);
+#ifdef ENABLE_UTF8
+		while (typing_x > 0 && is_zerowidth(answer + typing_x))
+			typing_x = step_left(answer, typing_x);
+#endif
+	}
 }
 
 /* Move right one character in the answer. */
 void do_statusbar_right(void)
 {
-	if (answer[typing_x] != '\0')
+	if (answer[typing_x] != '\0') {
 		typing_x = step_right(answer, typing_x);
+#ifdef ENABLE_UTF8
+		while (answer[typing_x] != '\0' && is_zerowidth(answer + typing_x))
+			typing_x = step_right(answer, typing_x);
+#endif
+	}
 }
 
 /* Delete one character in the answer. */
@@ -116,6 +139,10 @@ void do_statusbar_delete(void)
 
 		memmove(answer + typing_x, answer + typing_x + charlen,
 						strlen(answer) - typing_x - charlen + 1);
+#ifdef ENABLE_UTF8
+		if (is_zerowidth(answer + typing_x))
+			do_statusbar_delete();
+#endif
 	}
 }
 
@@ -123,8 +150,10 @@ void do_statusbar_delete(void)
 void do_statusbar_backspace(void)
 {
 	if (typing_x > 0) {
+		size_t was_x = typing_x;
+
 		typing_x = step_left(answer, typing_x);
-		do_statusbar_delete();
+		memmove(answer + typing_x, answer + was_x, strlen(answer) - was_x + 1);
 	}
 }
 
@@ -141,7 +170,7 @@ void do_statusbar_cut_text(void)
 void paste_into_answer(void)
 {
 	size_t pastelen = strlen(cutbuffer->data);
-	char *fusion = charalloc(strlen(answer) + pastelen + 1);
+	char *fusion = nmalloc(strlen(answer) + pastelen + 1);
 
 	/* Concatenate: the current answer before the cursor, the first line
 	 * of the cutbuffer, plus the rest of the current answer. */
@@ -184,7 +213,7 @@ void inject_into_answer(char *burst, size_t count)
 		if (burst[index] == '\0')
 			burst[index] = '\n';
 
-	answer = charealloc(answer, strlen(answer) + count + 1);
+	answer = nrealloc(answer, strlen(answer) + count + 1);
 	memmove(answer + typing_x + count, answer + typing_x,
 								strlen(answer) - typing_x + 1);
 	strncpy(answer + typing_x, burst , count);
@@ -195,14 +224,14 @@ void inject_into_answer(char *burst, size_t count)
 /* Get a verbatim keystroke and insert it into the answer. */
 void do_statusbar_verbatim_input(void)
 {
+	size_t count = 1;
 	char *bytes;
-	size_t count;
 
 	bytes = get_verbatim_kbinput(bottomwin, &count);
 
-	if (count > 0)
+	if (0 < count && count < 999)
 		inject_into_answer(bytes, count);
-	else
+	else if (count == 0)
 		beep();
 
 	free(bytes);
@@ -253,7 +282,7 @@ int do_statusbar_input(bool *finished)
 			beep();
 		else if (!ISSET(RESTRICTED) || currmenu != MWRITEFILE ||
 						openfile->filename[0] == '\0') {
-			puddle = charealloc(puddle, depth + 2);
+			puddle = nrealloc(puddle, depth + 2);
 			puddle[depth++] = (char)input;
 		}
 	}
@@ -275,8 +304,8 @@ int do_statusbar_input(bool *finished)
 		if (shortcut->func == do_tab || shortcut->func == do_enter)
 			;
 #ifdef ENABLE_HISTORIES
-		else if (shortcut->func == get_history_older_void ||
-					shortcut->func == get_history_newer_void)
+		else if (shortcut->func == get_older_item ||
+					shortcut->func == get_newer_item)
 			;
 #endif
 		else if (shortcut->func == do_left)
@@ -351,18 +380,19 @@ void put_cursor_at_end_of_answer(void)
 	typing_x = HIGHEST_POSITIVE;
 }
 
-/* Redraw the promptbar and place the cursor at the right spot. */
+/* Redraw the prompt bar and place the cursor at the right spot. */
 void draw_the_promptbar(void)
 {
 	size_t base = breadth(prompt) + 2;
-	size_t the_page, end_page, column;
+	size_t column = base + wideness(answer, typing_x);
+	size_t the_page, end_page;
 	char *expanded;
 
-	the_page = get_statusbar_page_start(base, base + wideness(answer, typing_x));
+	the_page = get_statusbar_page_start(base, column);
 	end_page = get_statusbar_page_start(base, base + breadth(answer) - 1);
 
-	/* Color the promptbar over its full width. */
-	wattron(bottomwin, interface_color_pair[TITLE_BAR]);
+	/* Color the prompt bar over its full width. */
+	wattron(bottomwin, interface_color_pair[PROMPT_BAR]);
 	mvwprintw(bottomwin, 0, 0, "%*s", COLS, " ");
 
 	mvwaddstr(bottomwin, 0, 0, prompt);
@@ -373,18 +403,21 @@ void draw_the_promptbar(void)
 	waddstr(bottomwin, expanded);
 	free(expanded);
 
-	if (base + breadth(answer) != COLS && the_page < end_page)
+	if (the_page < end_page && base + breadth(answer) - the_page > COLS)
 		mvwaddch(bottomwin, 0, COLS - 1, '>');
 
-	wattroff(bottomwin, interface_color_pair[TITLE_BAR]);
+	wattroff(bottomwin, interface_color_pair[PROMPT_BAR]);
 
-	/* Work around a cursor-misplacement bug in VTEs. */
-	wmove(bottomwin, 0, 0);
-	wrefresh(bottomwin);
+#if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH < 20210220)
+	/* Work around a cursor-misplacement bug -- https://sv.gnu.org/bugs/?59808. */
+	if (ISSET(NO_HELP)) {
+		wmove(bottomwin, 0, 0);
+		wrefresh(bottomwin);
+	}
+#endif
 
 	/* Place the cursor at the right spot. */
-	column = base + wideness(answer, typing_x);
-	wmove(bottomwin, 0, column - get_statusbar_page_start(base, column));
+	wmove(bottomwin, 0, column - the_page);
 	wnoutrefresh(bottomwin);
 }
 
@@ -393,11 +426,11 @@ void draw_the_promptbar(void)
 void add_or_remove_pipe_symbol_from_answer(void)
 {
 	if (answer[0] == '|') {
-		memmove(answer, answer + 1, strlen(answer) + 1);
+		memmove(answer, answer + 1, strlen(answer));
 		if (typing_x > 0)
 			typing_x--;
 	} else {
-		answer = charealloc(answer, strlen(answer) + 2);
+		answer = nrealloc(answer, strlen(answer) + 2);
 		memmove(answer + 1, answer, strlen(answer) + 1);
 		answer[0] = '|';
 		typing_x++;
@@ -413,10 +446,8 @@ functionptrtype acquire_an_answer(int *actual, bool *listed,
 	bool finished;
 	functionptrtype func;
 #ifdef ENABLE_HISTORIES
-	char *history = NULL;
-		/* The current history string. */
-	char *magichistory = NULL;
-		/* The (partial) answer that was typed at the prompt, if any. */
+	char *stored_string = NULL;
+		/* Whatever the answer was before the user foraged into history. */
 #ifdef ENABLE_TABCOMP
 	bool previous_was_tab = FALSE;
 		/* Whether the previous keystroke was an attempt at tab completion. */
@@ -439,7 +470,7 @@ functionptrtype acquire_an_answer(int *actual, bool *listed,
 			refresh_func();
 			*actual = KEY_WINCH;
 #ifdef ENABLE_HISTORIES
-			free(magichistory);
+			free(stored_string);
 #endif
 			return NULL;
 		}
@@ -465,42 +496,38 @@ functionptrtype acquire_an_answer(int *actual, bool *listed,
 			} else
 #endif
 			/* Allow tab completion of filenames, but not in restricted mode. */
-			if ((currmenu == MINSERTFILE || currmenu == MWRITEFILE ||
-								currmenu == MGOTODIR) && !ISSET(RESTRICTED))
+			if ((currmenu & (MINSERTFILE|MWRITEFILE|MGOTODIR)) && !ISSET(RESTRICTED))
 				answer = input_tab(answer, &typing_x, refresh_func, listed);
 		} else
 #endif /* ENABLE_TABCOMP */
 #ifdef ENABLE_HISTORIES
-		if (func == get_history_older_void) {
-			if (history_list != NULL) {
-				/* If we're scrolling up at the bottom of the history list
-				 * and answer isn't blank, save answer in magichistory. */
-				if ((*history_list)->next == NULL && *answer != '\0')
-					magichistory = mallocstrcpy(magichistory, answer);
+		if (func == get_older_item && history_list != NULL) {
+			/* If this is the first step into history, start at the bottom. */
+			if (stored_string == NULL)
+				reset_history_pointer_for(*history_list);
 
-				/* Get the older search from the history list and save it in
-				 * answer.  If there is no older search, don't do anything. */
-				if ((history = get_history_older(history_list)) != NULL) {
-					answer = mallocstrcpy(answer, history);
-					typing_x = strlen(answer);
-				}
+			/* When moving up from the bottom, remember the current answer. */
+			if ((*history_list)->next == NULL)
+				stored_string = mallocstrcpy(stored_string, answer);
+
+			/* If there is an older item, move to it and copy its string. */
+			if ((*history_list)->prev != NULL) {
+				*history_list = (*history_list)->prev;
+				answer = mallocstrcpy(answer, (*history_list)->data);
+				typing_x = strlen(answer);
+			}
+		} else if (func == get_newer_item && history_list != NULL) {
+			/* If there is a newer item, move to it and copy its string. */
+			if ((*history_list)->next != NULL) {
+				*history_list = (*history_list)->next;
+				answer = mallocstrcpy(answer, (*history_list)->data);
+				typing_x = strlen(answer);
 			}
-		} else if (func == get_history_newer_void) {
-			if (history_list != NULL) {
-				/* Get the newer search from the history list and save it in
-				 * answer.  If there is no newer search, don't do anything. */
-				if ((history = get_history_newer(history_list)) != NULL) {
-					answer = mallocstrcpy(answer, history);
-					typing_x = strlen(answer);
-				}
 
-				/* If we've reached the bottom of the history list, and answer
-				 * is blank, and magichistory is set, restore the old answer. */
-				if ((*history_list)->next == NULL &&
-						*answer == '\0' && magichistory != NULL) {
-					answer = mallocstrcpy(answer, magichistory);
-					typing_x = strlen(answer);
-				}
+			/* When at the bottom of the history list, restore the old answer. */
+			if ((*history_list)->next == NULL && stored_string && *answer == '\0') {
+				answer = mallocstrcpy(answer, stored_string);
+				typing_x = strlen(answer);
 			}
 		} else
 #endif /* ENABLE_HISTORIES */
@@ -510,7 +537,7 @@ functionptrtype acquire_an_answer(int *actual, bool *listed,
 #ifndef NANO_TINY
 		else if (func == do_nothing)
 			finished = FALSE;
-		else if (func == do_toggle_void) {
+		else if (func == do_toggle) {
 			TOGGLE(NO_HELP);
 			window_init();
 			focusing = FALSE;
@@ -531,10 +558,10 @@ functionptrtype acquire_an_answer(int *actual, bool *listed,
 	}
 
 #ifdef ENABLE_HISTORIES
-	/* Set the current position in the history list to the bottom. */
-	if (history_list != NULL) {
-		history_reset(*history_list);
-		free(magichistory);
+	/* If the history pointer was moved, point it at the bottom again. */
+	if (stored_string != NULL) {
+		reset_history_pointer_for(*history_list);
+		free(stored_string);
 	}
 #endif
 
@@ -566,7 +593,7 @@ int do_prompt(int menu, const char *provided, linestruct **history_list,
 #ifndef NANO_TINY
   redo_theprompt:
 #endif
-	prompt = charalloc((COLS * MAXCHARLEN) + 1);
+	prompt = nmalloc((COLS * MAXCHARLEN) + 1);
 	va_start(ap, msg);
 	vsnprintf(prompt, COLS * MAXCHARLEN, msg, ap);
 	va_end(ap);
@@ -659,11 +686,11 @@ int do_yesno_prompt(bool all, const char *msg)
 			post_one_key(cancelshortcut->keystr, _("Cancel"), width);
 		}
 
-		/* Color the promptbar over its full width and display the question. */
-		wattron(bottomwin, interface_color_pair[TITLE_BAR]);
+		/* Color the prompt bar over its full width and display the question. */
+		wattron(bottomwin, interface_color_pair[PROMPT_BAR]);
 		mvwprintw(bottomwin, 0, 0, "%*s", COLS, " ");
 		mvwaddnstr(bottomwin, 0, 0, msg, actual_x(msg, COLS - 1));
-		wattroff(bottomwin, interface_color_pair[TITLE_BAR]);
+		wattroff(bottomwin, interface_color_pair[PROMPT_BAR]);
 		wnoutrefresh(bottomwin);
 
 		currmenu = MYESNO;
@@ -734,16 +761,17 @@ int do_yesno_prompt(bool all, const char *msg)
 					choice = -2;
 			}
 		}
-#endif /* ENABLE_MOUSE */
+#endif
 		else if (func_from_key(&kbinput) == full_refresh)
 			full_refresh();
 #ifndef NANO_TINY
-		else if (func_from_key(&kbinput) == do_toggle_void) {
+		else if (func_from_key(&kbinput) == do_toggle) {
 			TOGGLE(NO_HELP);
 			window_init();
 			titlebar(NULL);
 			focusing = FALSE;
 			edit_refresh();
+			focusing = TRUE;
 		}
 #endif
 		else

src/prototypes.h

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   prototypes.h  --  This file is part of GNU nano.                     *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -36,7 +36,7 @@ extern bool bracketed_paste;
 
 extern bool we_are_running;
 extern bool more_than_one;
-
+extern bool report_size;
 extern bool ran_a_tool;
 
 extern bool inhelp;
@@ -186,15 +186,12 @@ extern size_t light_to_col;
 
 typedef void (*functionptrtype)(void);
 
-/* Most functions in browser.c. */
+/* The two needed functions from browser.c. */
 #ifdef ENABLE_BROWSER
-char *browse_in(const char *inpath);
-void read_the_list(const char *path, DIR *dir);
 void browser_refresh(void);
-void browser_select_dirname(const char *needle);
-void do_filesearch(bool forwards);
-void do_fileresearch(bool forwards);
-char *strip_last_component(const char *path);
+char *browse_in(const char *inpath);
+void to_first_file(void);
+void to_last_file(void);
 #endif
 
 /* Most functions in chars.c. */
@@ -208,8 +205,9 @@ bool is_cntrl_char(const char *c);
 bool is_word_char(const char *c, bool allow_punct);
 char control_mbrep(const char *c, bool isdata);
 #ifdef ENABLE_UTF8
-int mbwidth(const char *c);
-char *make_mbchar(long code, int *length);
+int mbtowide(wchar_t *wc, const char *c);
+bool is_doublewidth(const char *ch);
+bool is_zerowidth(const char *ch);
 #endif
 int char_length(const char *pointer);
 size_t mbstrlen(const char *pointer);
@@ -233,16 +231,12 @@ char *mbrevstrpbrk(const char *head, const char *accept, const char *pointer);
 bool has_blank_char(const char *string);
 #endif
 bool white_string(const char *string);
-#ifdef ENABLE_UTF8
-bool is_valid_unicode(wchar_t wc);
-#endif
 
 /* Most functions in color.c. */
 #ifdef ENABLE_COLOR
 void set_interface_colorpairs(void);
 void prepare_palette(void);
 void find_and_prime_applicable_syntax(void);
-void set_up_multicache(linestruct *line);
 void check_the_multis(linestruct *line);
 void precalc_multicolorinfo(void);
 #endif
@@ -287,7 +281,7 @@ void close_buffer(void);
 void read_file(FILE *f, int fd, const char *filename, bool undoable);
 int open_file(const char *filename, bool new_one, FILE **f);
 char *get_next_filename(const char *name, const char *suffix);
-void do_insertfile_void(void);
+void do_insertfile(void);
 #ifndef NANO_TINY
 void do_execute(void);
 #endif
@@ -301,14 +295,14 @@ bool outside_of_confinement(const char *currpath, bool allow_tabcomp);
 void init_backup_dir(void);
 #endif
 int copy_file(FILE *inn, FILE *out, bool close_out);
-bool write_file(const char *name, FILE *thefile, bool tmp,
-		kind_of_writing_type method, bool fullbuffer);
+bool write_file(const char *name, FILE *thefile, bool normal,
+				kind_of_writing_type method, bool annotate);
 #ifndef NANO_TINY
-bool write_marked_file(const char *name, FILE *stream, bool tmp,
-		kind_of_writing_type method);
+bool write_region_to_file(const char *name, FILE *stream, bool normal,
+				kind_of_writing_type method);
 #endif
-int do_writeout(bool exiting, bool withprompt);
-void do_writeout_void(void);
+int write_it_out(bool exiting, bool withprompt);
+void do_writeout(void);
 void do_savefile(void);
 char *real_dir_from_tilde(const char *path);
 #if defined(ENABLE_TABCOMP) || defined(ENABLE_BROWSER)
@@ -328,7 +322,7 @@ functionptrtype interpret(int *keycode);
 #endif
 int keycode_from_string(const char *keystring);
 void shortcut_init(void);
-const char *flagtostr(int flag);
+const char *epithet_of_flag(int flag);
 
 /* Some functions in help.c. */
 #ifdef ENABLE_HELP
@@ -339,12 +333,8 @@ void do_help(void);
 /* Most functions in history.c. */
 #ifdef ENABLE_HISTORIES
 void history_init(void);
-void history_reset(const linestruct *list);
-void update_history(linestruct **item, const char *text);
-char *get_history_older(linestruct **h);
-char *get_history_newer(linestruct **h);
-void get_history_older_void(void);
-void get_history_newer_void(void);
+void reset_history_pointer_for(const linestruct *list);
+void update_history(linestruct **item, const char *text, bool avoid_duplicates);
 #ifdef ENABLE_TABCOMP
 char *get_history_completion(linestruct **h, char *s, size_t len);
 #endif
@@ -369,8 +359,8 @@ void to_para_end(void);
 #endif
 void to_prev_block(void);
 void to_next_block(void);
-void do_prev_word(bool allow_punct);
-bool do_next_word(bool after_ends, bool allow_punct);
+void do_prev_word(void);
+bool do_next_word(bool after_ends);
 void to_prev_word(void);
 void to_next_word(void);
 void do_home(void);
@@ -395,8 +385,8 @@ void free_lines(linestruct *src);
 void renumber_from(linestruct *line);
 void print_view_warning(void);
 bool in_restricted_mode(void);
-#ifndef ENABLE_HELP
-void say_there_is_no_help(void);
+#ifndef NANO_TINY
+void suggest_ctrlT_ctrlZ(void);
 #endif
 void finish(void);
 void close_and_go(void);
@@ -405,21 +395,22 @@ void die(const char *msg, ...);
 void window_init(void);
 void install_handler_for_Ctrl_C(void);
 void restore_handler_for_Ctrl_C(void);
+#ifndef NANO_TINY
 void reconnect_and_store_state(void);
-RETSIGTYPE handle_hupterm(int signal);
-#ifndef DEBUG
-RETSIGTYPE handle_crash(int signal);
 #endif
-RETSIGTYPE do_suspend(int signal);
-RETSIGTYPE do_continue(int signal);
+void handle_hupterm(int signal);
+#ifndef DEBUG
+void handle_crash(int signal);
+#endif
+void suspend_nano(int signal);
+void do_suspend(void);
+void continue_nano(int signal);
 #if !defined(NANO_TINY) || defined(ENABLE_SPELLER) || defined(ENABLE_COLOR)
 void block_sigwinch(bool blockit);
 #endif
 #ifndef NANO_TINY
-RETSIGTYPE handle_sigwinch(int signal);
-void compute_the_extra_rows_per_line_from(linestruct *fromline);
+void handle_sigwinch(int signal);
 void regenerate_screen(void);
-void do_toggle(int flag);
 #endif
 void disable_kb_interrupt(void);
 void enable_kb_interrupt(void);
@@ -472,9 +463,9 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 void do_replace(void);
 void ask_for_and_do_replacements(void);
 void goto_line_posx(ssize_t line, size_t pos_x);
-void do_gotolinecolumn(ssize_t line, ssize_t column, bool retain_answer,
+void goto_line_and_column(ssize_t line, ssize_t column, bool retain_answer,
 		bool interactive);
-void do_gotolinecolumn_void(void);
+void do_gotolinecolumn(void);
 #ifndef NANO_TINY
 void do_find_bracket(void);
 void put_or_lift_anchor(void);
@@ -504,7 +495,7 @@ void update_multiline_undo(ssize_t lineno, char *indentation);
 void update_undo(undo_type action);
 #endif /* !NANO_TINY */
 #ifdef ENABLE_WRAPPING
-bool do_wrap(void);
+void do_wrap(void);
 #endif
 #if defined(ENABLE_HELP) || defined(ENABLED_WRAPORJUSTIFY)
 ssize_t break_line(const char *textstart, ssize_t goal, bool snap_at_nl);
@@ -516,8 +507,7 @@ size_t indent_length(const char *line);
 size_t quote_length(const char *line);
 bool begpar(const linestruct *const line, int depth);
 bool inpar(const linestruct *const line);
-void do_justify(bool full_justify);
-void do_justify_void(void);
+void do_justify(void);
 void do_full_justify(void);
 #endif
 #ifdef ENABLE_SPELLER
@@ -528,7 +518,7 @@ void do_linter(void);
 void do_formatter(void);
 #endif
 #ifndef NANO_TINY
-void do_wordlinechar_count(void);
+void count_lines_words_and_characters(void);
 #endif
 void do_verbatim_input(void);
 void complete_a_word(void);
@@ -537,9 +527,7 @@ void complete_a_word(void);
 void get_homedir(void);
 const char *tail(const char *path);
 char *concatenate(const char *path, const char *name);
-#ifdef ENABLE_LINENUMBERS
 int digits(ssize_t n);
-#endif
 bool parse_num(const char *str, ssize_t *result);
 bool parse_line_column(const char *str, ssize_t *line, ssize_t *column);
 void recode_NUL_to_LF(char *string, size_t length);
@@ -595,9 +583,11 @@ void blank_statusbar(void);
 void wipe_statusbar(void);
 void blank_bottombars(void);
 void check_statusblank(void);
+void set_blankdelay_to_one(void);
 char *display_string(const char *buf, size_t column, size_t span,
 						bool isdata, bool isprompt);
 void titlebar(const char *path);
+void minibar(void);
 void statusline(message_type importance, const char *msg, ...);
 void statusbar(const char *msg);
 void warn_and_briefly_pause(const char *msg);
@@ -633,9 +623,6 @@ void spotlight(size_t from_col, size_t to_col);
 #ifndef NANO_TINY
 void spotlight_softwrapped(size_t from_col, size_t to_col);
 #endif
-void do_suspend_void(void);
-void disable_waiting(void);
-void enable_waiting(void);
 #ifdef ENABLE_EXTRA
 void do_credits(void);
 #endif
@@ -644,22 +631,24 @@ void do_credits(void);
 void case_sens_void(void);
 void regexp_void(void);
 void backwards_void(void);
+#ifdef ENABLE_HISTORIES
+void get_older_item(void);
+void get_newer_item(void);
+#endif
 void flip_replace(void);
 void flip_goto(void);
 #ifdef ENABLE_BROWSER
 void to_files(void);
-void to_first_file(void);
-void to_last_file(void);
 void goto_dir(void);
 #endif
 #ifndef NANO_TINY
 void do_nothing(void);
-void do_toggle_void(void);
-void dos_format_void(void);
-void mac_format_void(void);
-void append_void(void);
-void prepend_void(void);
-void backup_file_void(void);
+void do_toggle(void);
+void dos_format(void);
+void mac_format(void);
+void append_it(void);
+void prepend_it(void);
+void back_it_up(void);
 void flip_execute(void);
 void flip_pipe(void);
 void flip_convert(void);

src/rcfile.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   rcfile.c  --  This file is part of GNU nano.                         *
  *                                                                        *
- *   Copyright (C) 2001-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2001-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2014 Mike Frysinger                                    *
  *   Copyright (C) 2019 Brand Huntsman                                    *
  *   Copyright (C) 2014-2020 Benno Schulenberg                            *
@@ -48,18 +48,18 @@ static const rcoption rcopts[] = {
 #endif
 	{"casesensitive", CASE_SENSITIVE},
 	{"constantshow", CONSTANT_SHOW},
-	{"emptyline", EMPTY_LINE},
 #ifdef ENABLED_WRAPORJUSTIFY
 	{"fill", 0},
 #endif
 #ifdef ENABLE_HISTORIES
 	{"historylog", HISTORYLOG},
 #endif
-	{"jumpyscrolling", JUMPY_SCROLLING},
 #ifdef ENABLE_LINENUMBERS
 	{"linenumbers", LINE_NUMBERS},
 #endif
-	{"morespace", MORE_SPACE},  /* Deprecated; remove in 2021. */
+#ifdef HAVE_LIBMAGIC
+	{"magic", USE_MAGIC},
+#endif
 #ifdef ENABLE_MOUSE
 	{"mouse", USE_MOUSE},
 #endif
@@ -68,9 +68,8 @@ static const rcoption rcopts[] = {
 #endif
 	{"nohelp", NO_HELP},
 	{"nonewlines", NO_NEWLINES},
-	{"nopauses", NO_PAUSES},  /* Obsolete; remove in 2021. */
 #ifdef ENABLE_WRAPPING
-	{"nowrap", NO_WRAP},  /* Deprecated; remove in 2021. */
+	{"nowrap", NO_WRAP},  /* Deprecated; remove in 2024. */
 #endif
 #ifdef ENABLE_OPERATINGDIR
 	{"operatingdir", 0},
@@ -92,10 +91,8 @@ static const rcoption rcopts[] = {
 	{"speller", 0},
 #endif
 	{"suspend", SUSPENDABLE},  /* Deprecated; remove in 2022. */
-	{"suspendable", SUSPENDABLE},
-	{"tabsize", 0},
+	{"suspendable", SUSPENDABLE},  /* Obsolete; remove in 2022. */
 	{"tempfile", SAVE_ON_EXIT},  /* Deprecated; remove in 2022. */
-	{"view", VIEW_MODE},
 #ifndef NANO_TINY
 	{"afterends", AFTER_ENDS},
 	{"allow_insecure_backup", INSECURE_BACKUP},
@@ -105,15 +102,19 @@ static const rcoption rcopts[] = {
 	{"backupdir", 0},
 	{"bookstyle", BOOKSTYLE},
 	{"cutfromcursor", CUT_FROM_CURSOR},
+	{"emptyline", EMPTY_LINE},
 	{"guidestripe", 0},
 	{"indicator", INDICATOR},
+	{"jumpyscrolling", JUMPY_SCROLLING},
 	{"locking", LOCKING},
 	{"matchbrackets", 0},
+	{"minibar", MINIBAR},
 	{"noconvert", NO_CONVERT},
 	{"showcursor", SHOW_CURSOR},
 	{"smarthome", SMART_HOME},
-	{"smooth", SMOOTH_SCROLL},  /* Deprecated; remove in 2021. */
 	{"softwrap", SOFTWRAP},
+	{"stateflags", STATEFLAGS},
+	{"tabsize", 0},
 	{"tabstospaces", TABS_TO_SPACES},
 	{"trimblanks", TRIM_BLANKS},
 	{"unix", MAKE_IT_UNIX},
@@ -121,12 +122,17 @@ static const rcoption rcopts[] = {
 	{"wordbounds", WORD_BOUNDS},
 	{"wordchars", 0},
 	{"zap", LET_THEM_ZAP},
+	{"zero", ZERO},
 #endif
 #ifdef ENABLE_COLOR
 	{"titlecolor", 0},
 	{"numbercolor", 0},
 	{"stripecolor", 0},
+	{"scrollercolor", 0},
 	{"selectedcolor", 0},
+	{"spotlightcolor", 0},
+	{"minicolor", 0},
+	{"promptcolor", 0},
 	{"statuscolor", 0},
 	{"errorcolor", 0},
 	{"keycolor", 0},
@@ -237,11 +243,11 @@ keystruct *strtosc(const char *input)
 	else if (!strcmp(input, "discardbuffer"))
 		s->func = discard_buffer;
 	else if (!strcmp(input, "writeout"))
-		s->func = do_writeout_void;
+		s->func = do_writeout;
 	else if (!strcmp(input, "savefile"))
 		s->func = do_savefile;
 	else if (!strcmp(input, "insert"))
-		s->func = do_insertfile_void;
+		s->func = do_insertfile;
 	else if (!strcmp(input, "whereis"))
 		s->func = do_search_forward;
 	else if (!strcmp(input, "wherewas"))
@@ -283,10 +289,10 @@ keystruct *strtosc(const char *input)
 	         !strcmp(input, "curpos"))  /* Deprecated; remove in 2022. */
 		s->func = report_cursor_position;
 	else if (!strcmp(input, "gotoline"))
-		s->func = do_gotolinecolumn_void;
+		s->func = do_gotolinecolumn;
 #ifdef ENABLE_JUSTIFY
 	else if (!strcmp(input, "justify"))
-		s->func = do_justify_void;
+		s->func = do_justify;
 	else if (!strcmp(input, "fulljustify"))
 		s->func = do_full_justify;
 	else if (!strcmp(input, "beginpara"))
@@ -307,16 +313,14 @@ keystruct *strtosc(const char *input)
 		s->func = do_indent;
 	else if (!strcmp(input, "unindent"))
 		s->func = do_unindent;
-	else if (!strcmp(input, "chopwordleft") ||
-	         !strcmp(input, "cutwordleft"))  /* Deprecated; remove in 2021. */
+	else if (!strcmp(input, "chopwordleft"))
 		s->func = chop_previous_word;
-	else if (!strcmp(input, "chopwordright") ||
-	         !strcmp(input, "cutwordright"))  /* Deprecated; remove in 2021. */
+	else if (!strcmp(input, "chopwordright"))
 		s->func = chop_next_word;
 	else if (!strcmp(input, "findbracket"))
 		s->func = do_find_bracket;
 	else if (!strcmp(input, "wordcount"))
-		s->func = do_wordlinechar_count;
+		s->func = count_lines_words_and_characters;
 	else if (!strcmp(input, "recordmacro"))
 		s->func = record_macro;
 	else if (!strcmp(input, "runmacro"))
@@ -392,8 +396,10 @@ keystruct *strtosc(const char *input)
 		s->func = do_backspace;
 	else if (!strcmp(input, "refresh"))
 		s->func = full_refresh;
+#ifndef NANO_TINY
 	else if (!strcmp(input, "suspend"))
-		s->func = do_suspend_void;
+		s->func = do_suspend;
+#endif
 	else if (!strcmp(input, "casesens"))
 		s->func = case_sens_void;
 	else if (!strcmp(input, "regexp"))
@@ -406,21 +412,21 @@ keystruct *strtosc(const char *input)
 		s->func = flip_goto;
 #ifdef ENABLE_HISTORIES
 	else if (!strcmp(input, "older"))
-		s->func = get_history_older_void;
+		s->func = get_older_item;
 	else if (!strcmp(input, "newer"))
-		s->func = get_history_newer_void;
+		s->func = get_newer_item;
 #endif
 #ifndef NANO_TINY
 	else if (!strcmp(input, "dosformat"))
-		s->func = dos_format_void;
+		s->func = dos_format;
 	else if (!strcmp(input, "macformat"))
-		s->func = mac_format_void;
+		s->func = mac_format;
 	else if (!strcmp(input, "append"))
-		s->func = append_void;
+		s->func = append_it;
 	else if (!strcmp(input, "prepend"))
-		s->func = prepend_void;
+		s->func = prepend_it;
 	else if (!strcmp(input, "backup"))
-		s->func = backup_file_void;
+		s->func = back_it_up;
 	else if (!strcmp(input, "flipexecute"))
 		s->func = flip_execute;
 	else if (!strcmp(input, "flippipe"))
@@ -445,9 +451,11 @@ keystruct *strtosc(const char *input)
 #endif
 	else {
 #ifndef NANO_TINY
-		s->func = do_toggle_void;
+		s->func = do_toggle;
 		if (!strcmp(input, "nohelp"))
 			s->toggle = NO_HELP;
+		else if (!strcmp(input, "zero"))
+			s->toggle = ZERO;
 		else if (!strcmp(input, "constantshow"))
 			s->toggle = CONSTANT_SHOW;
 		else if (!strcmp(input, "softwrap"))
@@ -469,7 +477,8 @@ keystruct *strtosc(const char *input)
 		else if (!strcmp(input, "cutfromcursor"))
 			s->toggle = CUT_FROM_CURSOR;
 #ifdef ENABLE_WRAPPING
-		else if (!strcmp(input, "nowrap"))
+		else if (!strcmp(input, "breaklonglines") ||
+		         !strcmp(input, "nowrap"))  /* Deprecated; remove in 2024. */
 			s->toggle = BREAK_LONG_LINES;
 #endif
 		else if (!strcmp(input, "tabstospaces"))
@@ -478,9 +487,6 @@ keystruct *strtosc(const char *input)
 		else if (!strcmp(input, "mouse"))
 			s->toggle = USE_MOUSE;
 #endif
-		else if (!strcmp(input, "suspendable") ||
-		         !strcmp(input, "suspendenable"))  /* Deprecated; remove in 2022. */
-			s->toggle = SUSPENDABLE;
 		else
 #endif /* !NANO_TINY */
 		{
@@ -612,14 +618,12 @@ bool compile(const char *expression, int rex_flags, regex_t **packed)
 
 	if (outcome != 0) {
 		size_t length = regerror(outcome, compiled, NULL, 0);
-		char *message = charalloc(length);
+		char *message = nmalloc(length);
 
 		regerror(outcome, compiled, message, length);
 		jot_error(N_("Bad regex \"%s\": %s"), expression, message);
 		free(message);
-	}
 
-	if (packed == NULL || outcome != 0) {
 		regfree(compiled);
 		free(compiled);
 	} else
@@ -662,7 +666,7 @@ void begin_new_syntax(char *ptr)
 	}
 
 	/* Initialize a new syntax struct. */
-	live_syntax = (syntaxtype *)nmalloc(sizeof(syntaxtype));
+	live_syntax = nmalloc(sizeof(syntaxtype));
 	live_syntax->name = copy_of(nameptr);
 	live_syntax->filename = copy_of(nanorc);
 	live_syntax->lineno = lineno;
@@ -824,9 +828,9 @@ void parse_binding(char *ptr, bool dobind)
 	if (is_universal(newsc->func))
 		menu &= MMOST|MBROWSER;
 #ifndef NANO_TINY
-	else if (newsc->func == do_toggle_void && newsc->toggle == NO_HELP)
+	else if (newsc->func == do_toggle && newsc->toggle == NO_HELP)
 		menu &= (MMOST|MBROWSER|MYESNO) & ~MFINDINHELP;
-	else if (newsc->func == do_toggle_void)
+	else if (newsc->func == do_toggle)
 		menu &= MMAIN;
 #endif
 	else if (newsc->func == full_refresh)
@@ -853,8 +857,8 @@ void parse_binding(char *ptr, bool dobind)
 	newsc->keystr = keycopy;
 	newsc->keycode = keycode;
 
-	/* Disallow rebinding ^[ and frequent escape-sequence starter "Esc [". */
-	if (newsc->keycode == ESC_CODE || newsc->keycode == '[') {
+	/* Disallow rebinding <Esc> (^[). */
+	if (newsc->keycode == ESC_CODE) {
 		jot_error(N_("Keystroke %s may not be rebound"), keycopy);
   free_things:
 		free(keycopy);
@@ -864,9 +868,9 @@ void parse_binding(char *ptr, bool dobind)
 
 #ifndef NANO_TINY
 	/* If this is a toggle, find and copy its sequence number. */
-	if (newsc->func == do_toggle_void) {
+	if (newsc->func == do_toggle) {
 		for (keystruct *s = sclist; s != NULL; s = s->next)
-			if (s->func == do_toggle_void && s->toggle == newsc->toggle)
+			if (s->func == do_toggle && s->toggle == newsc->toggle)
 				newsc->ordinal = s->ordinal;
 	} else
 		newsc->ordinal = 0;
@@ -988,19 +992,52 @@ void parse_includes(char *ptr)
 	free(expanded);
 }
 
-const char hues[9][7] = { "pink", "purple", "mauve", "lagoon", "mint",
-						  "lime", "peach", "orange", "latte" };
-short indices[9] = { 204, 163, 134, 38, 48, 148, 215, 208, 137 };
+/* Return the index of the color that is closest to the given RGB levels,
+ * assuming that the terminal uses the 6x6x6 color cube of xterm-256color. */
+short closest_index_color(short red, short green, short blue)
+{
+	/* Translation table, from 16 intended levels to 6 available levels. */
+	static const short level[] = { 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5 };
+
+	if (COLORS == 256)
+		return (36 * level[red] + 6 * level[green] + level[blue] + 16);
+	else
+		return THE_DEFAULT;
+}
+
+#define COLORCOUNT  34
+
+const char hues[COLORCOUNT][8] = { "red", "green", "blue",
+								   "yellow", "cyan", "magenta",
+								   "white", "black", "normal",
+								   "pink", "purple", "mauve",
+								   "lagoon", "mint", "lime",
+								   "peach", "orange", "latte",
+								   "rosy", "beet", "plum",
+								   "sea", "sky", "slate",
+								   "teal", "sage", "brown",
+								   "ocher", "sand", "tawny",
+								   "brick", "crimson",
+								   "grey", "gray" };
+
+short indices[COLORCOUNT] = { COLOR_RED, COLOR_GREEN, COLOR_BLUE,
+							  COLOR_YELLOW, COLOR_CYAN, COLOR_MAGENTA,
+							  COLOR_WHITE, COLOR_BLACK, THE_DEFAULT,
+							  204, 163, 134, 38, 48, 148, 215, 208, 137,
+							  175, 127, 98, 32, 111, 66, 35, 107, 100,
+							  142, 186, 136, 166, 161,
+							  COLOR_BLACK + 8, COLOR_BLACK + 8 };
 
 /* Return the short value corresponding to the given color name, and set
  * vivid to TRUE for a lighter color, and thick for a heavier typeface. */
 short color_to_short(const char *colorname, bool *vivid, bool *thick)
 {
-	if (strncmp(colorname, "bright", 6) == 0) {  /* Deprecated; remove in 2023. */
+	if (strncmp(colorname, "bright", 6) == 0 && colorname[6] != '\0') {
+		/* Prefix "bright" is deprecated; remove in 2024. */
 		*vivid = TRUE;
 		*thick = TRUE;
 		colorname += 6;
-	} else if (strncmp(colorname, "light", 5) == 0) {
+	} else if (strncmp(colorname, "light", 5) == 0 && colorname[5] != '\0') {
 		*vivid = TRUE;
 		*thick = FALSE;
 		colorname += 5;
@@ -1009,35 +1046,28 @@ short color_to_short(const char *colorname, bool *vivid, bool *thick)
 		*thick = FALSE;
 	}
 
-	if (strcmp(colorname, "green") == 0)
-		return COLOR_GREEN;
-	else if (strcmp(colorname, "red") == 0)
-		return COLOR_RED;
-	else if (strcmp(colorname, "blue") == 0)
-		return COLOR_BLUE;
-	else if (strcmp(colorname, "white") == 0)
-		return COLOR_WHITE;
-	else if (strcmp(colorname, "yellow") == 0)
-		return COLOR_YELLOW;
-	else if (strcmp(colorname, "cyan") == 0)
-		return COLOR_CYAN;
-	else if (strcmp(colorname, "magenta") == 0)
-		return COLOR_MAGENTA;
-	else if (strcmp(colorname, "black") == 0)
-		return COLOR_BLACK;
-	else if (strcmp(colorname, "normal") == 0)
-		return THE_DEFAULT;
-	else
-		for (int index = 0; index < 9; index++)
-			if (strcmp(colorname, hues[index]) == 0) {
-				if (*vivid) {
-					jot_error(N_("Color '%s' takes no prefix"), colorname);
-					return BAD_COLOR;
-				} else if (COLORS < 255)
-					return THE_DEFAULT;
-				else
-					return indices[index];
-			}
+	if (colorname[0] == '#' && strlen(colorname) == 4) {
+		unsigned short r, g, b;
+
+		if (*vivid) {
+			jot_error(N_("Color '%s' takes no prefix"), colorname);
+			return BAD_COLOR;
+		}
+
+		if (sscanf(colorname, "#%1hX%1hX%1hX", &r, &g, &b) == 3)
+			return closest_index_color(r, g, b);
+	}
+
+	for (int index = 0; index < COLORCOUNT; index++)
+		if (strcmp(colorname, hues[index]) == 0) {
+			if (index > 7 && *vivid) {
+				jot_error(N_("Color '%s' takes no prefix"), colorname);
+				return BAD_COLOR;
+			} else if (index > 8 && COLORS < 255)
+				return THE_DEFAULT;
+			else
+				return indices[index];
+		}
 
 	jot_error(N_("Color \"%s\" not understood"), colorname);
 	return BAD_COLOR;
@@ -1165,7 +1195,7 @@ void parse_rule(char *ptr, int rex_flags)
 		}
 
 		/* Allocate a rule, fill in the data, and link it into the list. */
-		newcolor = (colortype *)nmalloc(sizeof(colortype));
+		newcolor = nmalloc(sizeof(colortype));
 
 		newcolor->start = start_rgx;
 		newcolor->end = end_rgx;
@@ -1195,14 +1225,11 @@ colortype *parse_interface_color(char *combostr)
 {
 	colortype *trio = nmalloc(sizeof(colortype));
 
-	if (parse_combination(combostr, &trio->fg, &trio->bg, &trio->attributes)) {
-		free(combostr);
-		return trio;
-	} else {
-		free(combostr);
+	if (!parse_combination(combostr, &trio->fg, &trio->bg, &trio->attributes)) {
 		free(trio);
 		return NULL;
-	}
+	} else
+		return trio;
 }
 
 /* Read regex strings enclosed in double quotes from the line pointed at
@@ -1236,6 +1263,8 @@ void grab_and_store(const char *kind, char *ptr, regexlisttype **storage)
 
 	/* Now gather any valid regexes and add them to the linked list. */
 	while (*ptr != '\0') {
+		regex_t *packed_rgx = NULL;
+
 		regexstring = ++ptr;
 		ptr = parse_next_regex(ptr);
 
@@ -1243,12 +1272,12 @@ void grab_and_store(const char *kind, char *ptr, regexlisttype **storage)
 			return;
 
 		/* If the regex string is malformed, skip it. */
-		if (!compile(regexstring, NANO_REG_EXTENDED | REG_NOSUB, NULL))
+		if (!compile(regexstring, NANO_REG_EXTENDED | REG_NOSUB, &packed_rgx))
 			continue;
 
 		/* Copy the regex into a struct, and hook this in at the end. */
-		newthing = (regexlisttype *)nmalloc(sizeof(regexlisttype));
-		newthing->full_regex = copy_of(regexstring);
+		newthing = nmalloc(sizeof(regexlisttype));
+		newthing->one_rgx = packed_rgx;
 		newthing->next = NULL;
 
 		if (lastthing == NULL)
@@ -1541,8 +1570,6 @@ void parse_rcfile(FILE *rcstream, bool just_syntax, bool intros_only)
 			continue;
 		}
 #endif
-		argument = copy_of(argument);
-
 #ifdef ENABLE_COLOR
 		if (strcmp(option, "titlecolor") == 0)
 			color_combo[TITLE_BAR] = parse_interface_color(argument);
@@ -1550,8 +1577,16 @@ void parse_rcfile(FILE *rcstream, bool just_syntax, bool intros_only)
 			color_combo[LINE_NUMBER] = parse_interface_color(argument);
 		else if (strcmp(option, "stripecolor") == 0)
 			color_combo[GUIDE_STRIPE] = parse_interface_color(argument);
+		else if (strcmp(option, "scrollercolor") == 0)
+			color_combo[SCROLL_BAR] = parse_interface_color(argument);
 		else if (strcmp(option, "selectedcolor") == 0)
 			color_combo[SELECTED_TEXT] = parse_interface_color(argument);
+		else if (strcmp(option, "spotlightcolor") == 0)
+			color_combo[SPOTLIGHTED] = parse_interface_color(argument);
+		else if (strcmp(option, "minicolor") == 0)
+			color_combo[MINI_INFOBAR] = parse_interface_color(argument);
+		else if (strcmp(option, "promptcolor") == 0)
+			color_combo[PROMPT_BAR] = parse_interface_color(argument);
 		else if (strcmp(option, "statuscolor") == 0)
 			color_combo[STATUS_BAR] = parse_interface_color(argument);
 		else if (strcmp(option, "errorcolor") == 0)
@@ -1564,7 +1599,7 @@ void parse_rcfile(FILE *rcstream, bool just_syntax, bool intros_only)
 #endif
 #ifdef ENABLE_OPERATINGDIR
 		if (strcmp(option, "operatingdir") == 0)
-			operating_dir = argument;
+			operating_dir = mallocstrcpy(operating_dir, argument);
 		else
 #endif
 #ifdef ENABLED_WRAPORJUSTIFY
@@ -1573,31 +1608,21 @@ void parse_rcfile(FILE *rcstream, bool just_syntax, bool intros_only)
 				jot_error(N_("Requested fill size \"%s\" is invalid"), argument);
 				fill = -COLUMNS_FROM_EOL;
 			}
-			free(argument);
 		} else
 #endif
 #ifndef NANO_TINY
-		if (strcmp(option, "guidestripe") == 0) {
-			if (!parse_num(argument, &stripe_column) || stripe_column <= 0) {
-				jot_error(N_("Guide column \"%s\" is invalid"), argument);
-				stripe_column = 0;
-			}
-			free(argument);
-		} else if (strcmp(option, "matchbrackets") == 0) {
-			if (has_blank_char(argument)) {
+		if (strcmp(option, "matchbrackets") == 0) {
+			if (has_blank_char(argument))
 				jot_error(N_("Non-blank characters required"));
-				free(argument);
-			} else if (mbstrlen(argument) % 2 != 0) {
+			else if (mbstrlen(argument) % 2 != 0)
 				jot_error(N_("Even number of characters required"));
-				free(argument);
-			} else
-				matchbrackets = argument;
+			else
+				matchbrackets = mallocstrcpy(matchbrackets, argument);
 		} else if (strcmp(option, "whitespace") == 0) {
-			if (mbstrlen(argument) != 2 || breadth(argument) != 2) {
+			if (mbstrlen(argument) != 2 || breadth(argument) != 2)
 				jot_error(N_("Two single-column characters required"));
-				free(argument);
-			} else {
-				whitespace = argument;
+			else {
+				whitespace = mallocstrcpy(whitespace, argument);
 				whitelen[0] = char_length(whitespace);
 				whitelen[1] = char_length(whitespace + whitelen[0]);
 			}
@@ -1605,41 +1630,43 @@ void parse_rcfile(FILE *rcstream, bool just_syntax, bool intros_only)
 #endif
 #ifdef ENABLE_JUSTIFY
 		if (strcmp(option, "punct") == 0) {
-			if (has_blank_char(argument)) {
+			if (has_blank_char(argument))
 				jot_error(N_("Non-blank characters required"));
-				free(argument);
-			} else
-				punct = argument;
+			else
+				punct = mallocstrcpy(punct, argument);
 		} else if (strcmp(option, "brackets") == 0) {
-			if (has_blank_char(argument)) {
+			if (has_blank_char(argument))
 				jot_error(N_("Non-blank characters required"));
-				free(argument);
-			} else
-				brackets = argument;
+			else
+				brackets = mallocstrcpy(brackets, argument);
 		} else if (strcmp(option, "quotestr") == 0)
-			quotestr = argument;
-		else
-#endif
-#ifndef NANO_TINY
-		if (strcmp(option, "backupdir") == 0)
-			backup_dir = argument;
-		else
-		if (strcmp(option, "wordchars") == 0)
-			word_chars = argument;
+			quotestr = mallocstrcpy(quotestr, argument);
 		else
 #endif
 #ifdef ENABLE_SPELLER
 		if (strcmp(option, "speller") == 0)
-			alt_speller = argument;
+			alt_speller = mallocstrcpy(alt_speller, argument);
 		else
 #endif
-		if (strcmp(option, "tabsize") == 0) {
+#ifndef NANO_TINY
+		if (strcmp(option, "backupdir") == 0)
+			backup_dir = mallocstrcpy(backup_dir, argument);
+		else if (strcmp(option, "wordchars") == 0)
+			word_chars = mallocstrcpy(word_chars, argument);
+		else if (strcmp(option, "guidestripe") == 0) {
+			if (!parse_num(argument, &stripe_column) || stripe_column <= 0) {
+				jot_error(N_("Guide column \"%s\" is invalid"), argument);
+				stripe_column = 0;
+			}
+		} else if (strcmp(option, "tabsize") == 0) {
 			if (!parse_num(argument, &tabsize) || tabsize <= 0) {
 				jot_error(N_("Requested tab size \"%s\" is invalid"), argument);
 				tabsize = -1;
 			}
-			free(argument);
 		}
+#else
+		;  /* Properly terminate any earlier 'else'. */
+#endif
 	}
 
 	if (intros_only)

src/search.c

@@ -1,8 +1,8 @@
 /**************************************************************************
  *   search.c  --  This file is part of GNU nano.                         *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
- *   Copyright (C) 2015-2019 Benno Schulenberg                            *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
+ *   Copyright (C) 2015-2020 Benno Schulenberg                            *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
  *   it under the terms of the GNU General Public License as published    *
@@ -22,6 +22,7 @@
 #include "prototypes.h"
 
 #include <string.h>
+#include <time.h>
 
 static bool came_full_circle = FALSE;
 		/* Have we reached the starting line again while searching? */
@@ -38,10 +39,10 @@ bool regexp_init(const char *regexp)
 	/* If regex compilation failed, show the error message. */
 	if (value != 0) {
 		size_t len = regerror(value, &search_regexp, NULL, 0);
-		char *str = charalloc(len);
+		char *str = nmalloc(len);
 
 		regerror(value, &search_regexp, str, len);
-		statusline(ALERT, _("Bad regex \"%s\": %s"), regexp, str);
+		statusline(AHEM, _("Bad regex \"%s\": %s"), regexp, str);
 		free(str);
 
 		return FALSE;
@@ -78,10 +79,10 @@ void search_init(bool replacing, bool retain_answer)
 	if (*last_search != '\0') {
 		char *disp = display_string(last_search, 0, COLS / 3, FALSE, FALSE);
 
-		thedefault = charalloc(strlen(disp) + 7);
+		thedefault = nmalloc(strlen(disp) + 7);
 		/* We use (COLS / 3) here because we need to see more on the line. */
 		sprintf(thedefault, " [%s%s]", disp,
-				(breadth(last_search) > COLS / 3) ? "..." : "");
+					(breadth(last_search) > COLS / 3) ? "..." : "");
 		free(disp);
 	} else
 		thedefault = copy_of("");
@@ -117,7 +118,7 @@ void search_init(bool replacing, bool retain_answer)
 			if (*answer != '\0') {
 				last_search = mallocstrcpy(last_search, answer);
 #ifdef ENABLE_HISTORIES
-				update_history(&search_history, answer);
+				update_history(&search_history, answer, PRUNE_DUPLICATE);
 #endif
 			}
 
@@ -132,6 +133,8 @@ void search_init(bool replacing, bool retain_answer)
 			break;
 		}
 
+		retain_answer = TRUE;
+
 		func = func_from_key(&response);
 
 		/* If we're here, one of the five toggles was pressed, or
@@ -149,7 +152,7 @@ void search_init(bool replacing, bool retain_answer)
 			} else
 				replacing = !replacing;
 		} else if (func == flip_goto) {
-			do_gotolinecolumn(openfile->current->lineno,
+			goto_line_and_column(openfile->current->lineno,
 								openfile->placewewant + 1, TRUE, TRUE);
 			break;
 		} else
@@ -183,35 +186,12 @@ int findnextstr(const char *needle, bool whole_word_only, int modus,
 		/* The time we last looked at the keyboard. */
 
 	/* Set non-blocking input so that we can just peek for a Cancel. */
-	disable_waiting();
+	nodelay(edit, TRUE);
 
 	if (begin == NULL)
 		came_full_circle = FALSE;
 
-	/* Start searching through the lines, looking for the needle. */
 	while (TRUE) {
-		/* Glance at the keyboard once every second. */
-		if (time(NULL) - lastkbcheck > 0) {
-			int input = parse_kbinput(edit);
-
-			lastkbcheck = time(NULL);
-
-			/* Consume all waiting keystrokes until a Cancel. */
-			while (input != ERR) {
-				if (func_from_key(&input) == do_cancel) {
-					statusbar(_("Cancelled"));
-					enable_waiting();
-					return -2;
-				}
-				input = parse_kbinput(NULL);
-			}
-
-			if (++feedback > 0)
-				/* TRANSLATORS: This is shown when searching takes
-				 * more than half a second. */
-				statusbar(_("Searching..."));
-		}
-
 		/* When starting a new search, skip the first character, then
 		 * (in either case) search for the needle in the current line. */
 		if (skipone) {
@@ -243,33 +223,35 @@ int findnextstr(const char *needle, bool whole_word_only, int modus,
 			break;
 		}
 
+#ifndef NANO_TINY
+		if (the_window_resized) {
+			regenerate_screen();
+			nodelay(edit, TRUE);
+			statusbar(_("Searching..."));
+			feedback = 1;
+		}
+#endif
 		/* If we're back at the beginning, then there is no needle. */
 		if (came_full_circle) {
-			enable_waiting();
+			nodelay(edit, FALSE);
 			return 0;
 		}
 
 		/* Move to the previous or next line in the file. */
-		if (ISSET(BACKWARDS_SEARCH))
-			line = line->prev;
-		else
-			line = line->next;
+		line = (ISSET(BACKWARDS_SEARCH)) ? line->prev : line->next;
 
 		/* If we've reached the start or end of the buffer, wrap around;
 		 * but stop when spell-checking or replacing in a region. */
 		if (line == NULL) {
 			if (whole_word_only || modus == INREGION) {
-				enable_waiting();
+				nodelay(edit, FALSE);
 				return 0;
 			}
 
-			if (ISSET(BACKWARDS_SEARCH))
-				line = openfile->filebot;
-			else
-				line = openfile->filetop;
+			line = (ISSET(BACKWARDS_SEARCH)) ? openfile->filebot : openfile->filetop;
 
 			if (modus == JUSTFIND) {
-				statusbar(_("Search Wrapped"));
+				statusline(REMARK, _("Search Wrapped"));
 				/* Delay the "Searching..." message for at least two seconds. */
 				feedback = -2;
 			}
@@ -283,11 +265,48 @@ int findnextstr(const char *needle, bool whole_word_only, int modus,
 		from = line->data;
 		if (ISSET(BACKWARDS_SEARCH))
 			from += strlen(line->data);
+
+		/* Glance at the keyboard once every second, to check for a Cancel. */
+		if (time(NULL) - lastkbcheck > 0) {
+			int input = wgetch(edit);
+
+			lastkbcheck = time(NULL);
+
+			/* Consume any queued-up keystrokes, until a Cancel or nothing. */
+			while (input != ERR) {
+				if (input == ESC_CODE) {
+					napms(20);
+					input = wgetch(edit);
+					meta_key = TRUE;
+				} else
+					meta_key = FALSE;
+
+				if (func_from_key(&input) == do_cancel) {
+#ifndef NANO_TINY
+					if (the_window_resized)
+						regenerate_screen();
+#endif
+					statusbar(_("Cancelled"));
+					/* Clear out the key buffer (in case a macro is running). */
+					while (input != ERR)
+						input = parse_kbinput(NULL);
+					nodelay(edit, FALSE);
+					return -2;
+				}
+
+				input = wgetch(edit);
+			}
+
+			if (++feedback > 0)
+				/* TRANSLATORS: This is shown when searching takes
+				 * more than half a second. */
+				statusbar(_("Searching..."));
+		}
 	}
 
 	found_x = found - line->data;
 
-	enable_waiting();
+	nodelay(edit, FALSE);
 
 	/* Ensure that the found occurrence is not beyond the starting x. */
 	if (came_full_circle && ((!ISSET(BACKWARDS_SEARCH) && (found_x > begin_x ||
@@ -303,11 +322,17 @@ int findnextstr(const char *needle, bool whole_word_only, int modus,
 	if (match_len != NULL)
 		*match_len = found_len;
 
-	/* Wipe the "Searching..." message and unsuppress cursor-position display. */
-	if (feedback > 0) {
-		wipe_statusbar();
-		lastmessage = VACUUM;
+#ifndef NANO_TINY
+	if (modus == JUSTFIND && (!openfile->mark || openfile->softmark)) {
+		spotlighted = TRUE;
+		light_from_col = xplustabs();
+		light_to_col = wideness(line->data, found_x + found_len);
+		refresh_needed = TRUE;
 	}
+#endif
+
+	if (feedback > 0)
+		wipe_statusbar();
 
 	return 1;
 }
@@ -337,7 +362,7 @@ void do_research(void)
 #endif
 
 	if (*last_search == '\0') {
-		statusbar(_("No current search pattern"));
+		statusline(AHEM, _("No current search pattern"));
 		return;
 	}
 
@@ -347,7 +372,8 @@ void do_research(void)
 	/* Use the search-menu key bindings, to allow cancelling. */
 	currmenu = MWHEREIS;
 
-	wipe_statusbar();
+	if (LINES > 1)
+		wipe_statusbar();
 
 	go_looking();
 
@@ -374,7 +400,7 @@ void not_found_msg(const char *str)
 	char *disp = display_string(str, 0, (COLS / 2) + 1, FALSE, FALSE);
 	size_t numchars = actual_x(disp, wideness(disp, COLS / 2));
 
-	statusline(HUSH, _("\"%.*s%s\" not found"), numchars, disp,
+	statusline(AHEM, _("\"%.*s%s\" not found"), numchars, disp,
 						(disp[numchars] == '\0') ? "" : "...");
 	free(disp);
 }
@@ -400,13 +426,13 @@ void go_looking(void)
 	/* If we found something, and we're back at the exact same spot
 	 * where we started searching, then this is the only occurrence. */
 	if (didfind == 1 && openfile->current == was_current &&
-				openfile->current_x == was_current_x)
-		statusbar(_("This is the only occurrence"));
+						openfile->current_x == was_current_x)
+		statusline(REMARK, _("This is the only occurrence"));
 	else if (didfind == 0)
 		not_found_msg(last_search);
 
 #ifdef TIMEIT
-	statusline(HUSH, "Took: %.2f", (double)(clock() - start) / CLOCKS_PER_SEC);
+	statusline(INFO, "Took: %.2f", (double)(clock() - start) / CLOCKS_PER_SEC);
 #endif
 
 	edit_redraw(was_current, CENTERING);
@@ -442,8 +468,7 @@ int replace_regexp(char *string, bool create)
 			/* And if create is TRUE, append the result of the
 			 * subexpression match to the new line. */
 			if (create) {
-				strncpy(string, openfile->current->data +
-										regmatches[num].rm_so, i);
+				strncpy(string, openfile->current->data + regmatches[num].rm_so, i);
 				string += i;
 			}
 		}
@@ -471,7 +496,7 @@ char *replace_line(const char *needle)
 		new_size += strlen(answer) - match_len;
 	}
 
-	copy = charalloc(new_size);
+	copy = nmalloc(new_size);
 
 	/* Copy the head of the original line. */
 	strncpy(copy, openfile->current->data, openfile->current_x);
@@ -488,18 +513,6 @@ char *replace_line(const char *needle)
 	return copy;
 }
 
-#ifdef ENABLE_COLOR
-/* Reset the multiline coloring info and then recalculate it. */
-void wipe_and_recalculate_colorinfo(void)
-{
-	for (linestruct *line = openfile->filetop; line != NULL; line = line->next)
-		for (short index = 0; index < openfile->syntax->nmultis; index++)
-			line->multidata[index] = -1;
-
-	precalc_multicolorinfo();
-}
-#endif
-
 /* Step through each occurrence of the search string and prompt the user
  * before replacing it.  We seek for needle, and replace it with answer.
  * The parameters real_current and real_current_x are needed in order to
@@ -535,7 +548,7 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 			openfile->current_x = bot_x;
 		}
 	}
-#endif /* !NANO_TINY */
+#endif
 
 	came_full_circle = FALSE;
 
@@ -591,17 +604,16 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 		}
 
 		if (choice == 1 || replaceall) {  /* Yes, replace it. */
-			char *copy;
 			size_t length_change;
+			char *altered;
+
+			altered = replace_line(needle);
+
+			length_change = strlen(altered) - strlen(openfile->current->data);
 
 #ifndef NANO_TINY
 			add_undo(REPLACE, NULL);
-#endif
-			copy = replace_line(needle);
 
-			length_change = strlen(copy) - strlen(openfile->current->data);
-
-#ifndef NANO_TINY
 			/* If the mark was on and it was located after the cursor,
 			 * then adjust its x position for any text length changes. */
 			if (was_mark && !right_side_up) {
@@ -617,8 +629,9 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 
 			/* If the mark was not on or it was before the cursor, then
 			 * adjust the cursor's x position for any text length changes. */
-			if (!was_mark || right_side_up) {
+			if (!was_mark || right_side_up)
 #endif
+			{
 				if (openfile->current == real_current &&
 						openfile->current_x < *real_current_x) {
 					if (*real_current_x < openfile->current_x + match_len)
@@ -626,8 +639,8 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 					*real_current_x += length_change;
 #ifndef NANO_TINY
 					bot_x = *real_current_x;
-				}
 #endif
+				}
 			}
 
 			/* Don't find the same zero-length or BOL match again. */
@@ -640,21 +653,10 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 				openfile->current_x += match_len + length_change;
 
 			/* Update the file size, and put the changed line into place. */
-			openfile->totsize += mbstrlen(copy) - mbstrlen(openfile->current->data);
+			openfile->totsize += mbstrlen(altered) - mbstrlen(openfile->current->data);
 			free(openfile->current->data);
-			openfile->current->data = copy;
+			openfile->current->data = altered;
 
-#ifndef NANO_TINY
-			if (ISSET(SOFTWRAP))
-				openfile->current->extrarows = extra_chunks_in(openfile->current);
-#endif
-#ifdef ENABLE_COLOR
-			/* Check whether the replacement requires a change in the coloring. */
-			check_the_multis(openfile->current);
-
-			if (refresh_needed && !replaceall)
-				wipe_and_recalculate_colorinfo();
-#endif
 			set_modified();
 			as_an_at = TRUE;
 			numreplaced++;
@@ -664,11 +666,6 @@ ssize_t do_replace_loop(const char *needle, bool whole_word_only,
 	if (numreplaced == -1)
 		not_found_msg(needle);
 
-#ifdef ENABLE_COLOR
-	if (refresh_needed)
-		wipe_and_recalculate_colorinfo();
-#endif
-
 #ifndef NANO_TINY
 	openfile->mark = was_mark;
 #endif
@@ -701,13 +698,13 @@ void ask_for_and_do_replacements(void)
 	size_t begin_x = openfile->current_x;
 	ssize_t numreplaced;
 	int response = do_prompt(MREPLACEWITH, "", &replace_history,
-						/* TRANSLATORS: This is a prompt. */
-						edit_refresh, _("Replace with"));
+							/* TRANSLATORS: This is a prompt. */
+							edit_refresh, _("Replace with"));
 
 #ifdef ENABLE_HISTORIES
 	/* When not "", add the replace string to the replace history list. */
 	if (response == 0)
-		update_history(&replace_history, answer);
+		update_history(&replace_history, answer, PRUNE_DUPLICATE);
 #endif
 
 	/* When cancelled, or when a function was run, get out. */
@@ -724,11 +721,12 @@ void ask_for_and_do_replacements(void)
 	openfile->firstcolumn = was_firstcolumn;
 	openfile->current = beginline;
 	openfile->current_x = begin_x;
+
 	refresh_needed = TRUE;
 
 	if (numreplaced >= 0)
-		statusline(HUSH, P_("Replaced %zd occurrence",
-				"Replaced %zd occurrences", numreplaced), numreplaced);
+		statusline(REMARK, P_("Replaced %zd occurrence",
+					"Replaced %zd occurrences", numreplaced), numreplaced);
 }
 
 /* Go to the specified line and x position. */
@@ -747,8 +745,8 @@ void goto_line_posx(ssize_t line, size_t pos_x)
 /* Go to the specified line and column, or ask for them if interactive
  * is TRUE.  In the latter case also update the screen afterwards.
  * Note that both the line and column number should be one-based. */
-void do_gotolinecolumn(ssize_t line, ssize_t column, bool retain_answer,
-		bool interactive)
+void goto_line_and_column(ssize_t line, ssize_t column, bool retain_answer,
+							bool interactive)
 {
 	if (interactive) {
 		/* Ask for the line and column. */
@@ -775,7 +773,7 @@ void do_gotolinecolumn(ssize_t line, ssize_t column, bool retain_answer,
 
 		/* Try to extract one or two numbers from the user's response. */
 		if (!parse_line_column(answer, &line, &column)) {
-			statusline(ALERT, _("Invalid line or column number"));
+			statusline(AHEM, _("Invalid line or column number"));
 			return;
 		}
 	} else {
@@ -844,9 +842,9 @@ void do_gotolinecolumn(ssize_t line, ssize_t column, bool retain_answer,
 }
 
 /* Go to the specified line and column, asking for them beforehand. */
-void do_gotolinecolumn_void(void)
+void do_gotolinecolumn(void)
 {
-	do_gotolinecolumn(openfile->current->lineno,
+	goto_line_and_column(openfile->current->lineno,
 						openfile->placewewant + 1, FALSE, TRUE);
 }
 
@@ -923,7 +921,7 @@ void do_find_bracket(void)
 	ch = mbstrchr(matchbrackets, openfile->current->data + openfile->current_x);
 
 	if (ch == NULL) {
-		statusbar(_("Not a bracket"));
+		statusline(AHEM, _("Not a bracket"));
 		return;
 	}
 
@@ -966,7 +964,7 @@ void do_find_bracket(void)
 		}
 	}
 
-	statusbar(_("No matching bracket"));
+	statusline(AHEM, _("No matching bracket"));
 
 	/* Restore the cursor position. */
 	openfile->current = was_current;
@@ -981,9 +979,9 @@ void put_or_lift_anchor(void)
 	update_line(openfile->current, openfile->current_x);
 
 	if (openfile->current->has_anchor)
-		statusbar(_("Placed anchor"));
+		statusline(REMARK, _("Placed anchor"));
 	else
-		statusbar(_("Removed anchor"));
+		statusline(REMARK, _("Removed anchor"));
 }
 
 /* Make the given line the current line, or report the anchoredness. */
@@ -997,9 +995,9 @@ void go_to_and_confirm(linestruct *line)
 		edit_redraw(was_current, CENTERING);
 		statusbar(_("Jumped to anchor"));
 	} else if (openfile->current->has_anchor)
-		statusbar(_("This is the only anchor"));
+		statusline(REMARK, _("This is the only anchor"));
 	else
-		statusbar(_("There are no anchors"));
+		statusline(AHEM, _("There are no anchors"));
 }
 
 /* Jump to the first anchor before the current line; wrap around at the top. */

src/utils.c

@@ -1,7 +1,7 @@
 /**************************************************************************
  *   utils.c  --  This file is part of GNU nano.                          *
  *                                                                        *
- *   Copyright (C) 1999-2011, 2013-2020 Free Software Foundation, Inc.    *
+ *   Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc.    *
  *   Copyright (C) 2016, 2017, 2019 Benno Schulenberg                     *
  *                                                                        *
  *   GNU nano is free software: you can redistribute it and/or modify     *
@@ -61,14 +61,14 @@ const char *tail(const char *path)
 	if (slash == NULL)
 		return path;
 	else
-		return ++slash;
+		return slash + 1;
 }
 
 /* Return a copy of the two given strings, welded together. */
 char *concatenate(const char *path, const char *name)
 {
 	size_t pathlen = strlen(path);
-	char *joined = charalloc(pathlen + strlen(name) + 1);
+	char *joined = nmalloc(pathlen + strlen(name) + 1);
 
 	strcpy(joined, path);
 	strcpy(joined + pathlen, name);
@@ -76,7 +76,6 @@ char *concatenate(const char *path, const char *name)
 	return joined;
 }
 
-#ifdef ENABLE_LINENUMBERS
 /* Return the number of digits that the given integer n takes up. */
 int digits(ssize_t n)
 {
@@ -106,21 +105,20 @@ int digits(ssize_t n)
 		}
 	}
 }
-#endif
 
-/* Read an integer from str.  If it parses okay, store it in *result
- * and return TRUE; otherwise, return FALSE. */
-bool parse_num(const char *str, ssize_t *result)
+/* Read an integer from the given string.  If it parses okay,
+ * store it in *result and return TRUE; otherwise, return FALSE. */
+bool parse_num(const char *string, ssize_t *result)
 {
-	char *first_error;
 	ssize_t value;
+	char *excess;
 
-	/* The manual page for strtol() says this is required. */
+	/* Clear the error number so that we can check it afterward. */
 	errno = 0;
 
-	value = (ssize_t)strtol(str, &first_error, 10);
+	value = (ssize_t)strtol(string, &excess, 10);
 
-	if (errno == ERANGE || *str == '\0' || *first_error != '\0')
+	if (errno == ERANGE || *string == '\0' || *excess != '\0')
 		return FALSE;
 
 	*result = value;
@@ -195,22 +193,18 @@ void free_chararray(char **array, size_t len)
 #endif
 
 #ifdef ENABLE_SPELLER
-/* Is the word starting at the given position in buf and of the given length
- * a separate word?  That is: is it not part of a longer word?*/
-bool is_separate_word(size_t position, size_t length, const char *buf)
+/* Is the word starting at the given position in 'text' and of the given
+ * length a separate word?  That is: is it not part of a longer word? */
+bool is_separate_word(size_t position, size_t length, const char *text)
 {
-	char before[MAXCHARLEN], after[MAXCHARLEN];
-	size_t word_end = position + length;
-
-	/* Get the characters before and after the word, if any. */
-	collect_char(buf + step_left(buf, position), before);
-	collect_char(buf + word_end, after);
+	const char *before = text + step_left(text, position);
+	const char *after = text + position + length;
 
 	/* If the word starts at the beginning of the line OR the character before
 	 * the word isn't a letter, and if the word ends at the end of the line OR
 	 * the character after the word isn't a letter, we have a whole word. */
 	return ((position == 0 || !is_alpha_char(before)) &&
-				(buf[word_end] == '\0' || !is_alpha_char(after)));
+					(*after == '\0' || !is_alpha_char(after)));
 }
 #endif /* ENABLE_SPELLER */
 
@@ -294,7 +288,10 @@ void *nmalloc(size_t howmuch)
 {
 	void *r = malloc(howmuch);
 
-	if (r == NULL && howmuch != 0)
+	if (howmuch == 0)
+		die("Allocating zero bytes.  Please report a bug.\n");
+
+	if (r == NULL)
 		die(_("Nano is out of memory!\n"));
 
 	return r;
@@ -306,7 +303,10 @@ void *nrealloc(void *ptr, size_t howmuch)
 {
 	void *r = realloc(ptr, howmuch);
 
-	if (r == NULL && howmuch != 0)
+	if (howmuch == 0)
+		die("Allocating zero bytes.  Please report a bug.\n");
+
+	if (r == NULL)
 		die(_("Nano is out of memory!\n"));
 
 	return r;
@@ -318,7 +318,7 @@ char *mallocstrcpy(char *dest, const char *src)
 {
 	size_t count = strlen(src) + 1;
 
-	dest = charealloc(dest, count);
+	dest = nrealloc(dest, count);
 	strncpy(dest, src, count);
 
 	return dest;
@@ -328,9 +328,9 @@ char *mallocstrcpy(char *dest, const char *src)
  * of the given string, and NUL-terminate the copy. */
 char *measured_copy(const char *string, size_t count)
 {
-	char *thecopy = charalloc(count + 1);
+	char *thecopy = nmalloc(count + 1);
 
-	strncpy(thecopy, string, count);
+	memcpy(thecopy, string, count);
 	thecopy[count] = '\0';
 
 	return thecopy;
@@ -349,14 +349,12 @@ char *free_and_assign(char *dest, char *src)
 	return src;
 }
 
-/* When not in softwrap mode, nano scrolls horizontally within a line in
- * chunks (a bit smaller than the chunks used in softwrapping).  Return the
- * column number of the first character displayed in the edit window when the
- * cursor is at the given column.  Note that (0 <= column -
- * get_page_start(column) < COLS). */
+/* When not softwrapping, nano scrolls the current line horizontally by
+ * chunks ("pages").  Return the column number of the first character
+ * displayed in the edit window when the cursor is at the given column. */
 size_t get_page_start(size_t column)
 {
-	if (column + 2 < editwincols || ISSET(SOFTWRAP) || column == 0)
+	if (column == 0 || column + 2 < editwincols || ISSET(SOFTWRAP))
 		return 0;
 	else if (editwincols > 8)
 		return column - 6 - (column - 6) % (editwincols - 8);

syntax/Makefile.am

@@ -36,13 +36,12 @@ pkgdata_DATA =	asm.nanorc \
 		tcl.nanorc \
 		tex.nanorc \
 		texinfo.nanorc \
-		xml.nanorc
+		xml.nanorc \
+		yaml.nanorc
 
 nobase_pkgdata_DATA = \
 		extra/ada.nanorc \
-		extra/debian.nanorc \
 		extra/fortran.nanorc \
-		extra/gentoo.nanorc \
 		extra/haskell.nanorc \
 		extra/povray.nanorc \
 		extra/spec.nanorc

syntax/asm.nanorc

@@ -8,11 +8,11 @@ color red "\<[A-Z_]{2,}\>"
 color brightgreen "\.(data|subsection|text)"
 color green "\.(align|file|globl|global|hidden|section|size|type|weak)"
 color brightyellow "\.(ascii|asciz|byte|double|float|hword|int|long|short|single|struct|word)"
-color brightred "^[[:space:]]*[.0-9A-Za-z_]*:"
-color brightcyan "^[[:space:]]*#[[:space:]]*(define|undef|include|ifn?def|endif|elif|else|if|warning|error)"
+color brightred "^[[:blank:]]*[.0-9A-Za-z_]*:"
+color brightcyan "^[[:blank:]]*#[[:blank:]]*(define|undef|include|ifn?def|endif|elif|else|if|warning|error)"
 
-# Strings.
-color brightyellow "<[^= 	]*>" ""(\\.|[^"])*""
+# Strings and names of included files.
+color brightyellow ""([^"\]|\\.)*"|<[^= 	]*>"
 
 # Comments.
 color brightblue "//.*"

syntax/autoconf.nanorc

@@ -1,5 +1,8 @@
 ## Syntax highlighting for Autoconf.
 
+## Original author:  Benno Schulenberg
+## License:  GPL version 3 or newer
+
 syntax autoconf "\.(ac|m4)$"
 comment "#"
 
@@ -14,13 +17,13 @@ color cyan "\<[[:upper:]_[:digit:]]+\>"
 color red "\<[-_.0-9]+\>"
 
 # Strings:
-color red ""[^"]*""  "'[^']*'"
+color red ""[^"]*"|'[^']*'"
 
 # Backticks:
 color green "`[^`]*`"
 
 # Error lines:
-color brightred "^[[:space:]]*\*\*\*.*"
+color brightred "^[[:blank:]]*\*\*\*.*"
 
 # Brackets:
 color magenta "\[|\]|\(|\)"

syntax/awk.nanorc

@@ -29,9 +29,9 @@ color magenta "\<(and|compl|lshift|or|rshift|xor)\>"
 color magenta "\<(bindtextdomain|dcgettext|dcngettext)\>"
 
 # Strings.
-color brightyellow "<[^= 	]*>" ""(\\.|[^"])*""
+color brightyellow ""([^"\]|\\.)*""
 # Comments.
-color brightblue "(^|[[:space:]])#.*$"
+color brightblue "(^|[[:blank:]])#.*"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"

syntax/c.nanorc

@@ -1,33 +1,39 @@
 ## Syntax highlighting for C and C++ files.
 
 syntax c "\.([ch](pp|xx)?|C|cc|c\+\+|cu|H|hh|ii?)$"
-header "-\*-.*\<C(\+\+)?((;|\s).*)?-\*-"
+header "-\*-.*\<C(\+\+)?((;|[[:blank:]]).*)?-\*-"
 magic "^(C|C\+\+) (source|program)"
 comment "//"
 
 # Constants.
-color brightred "\<[A-Z_][0-9A-Z_]+\>"
+color brightred "\<[A-Z_][0-9A-Z_]*\>"
 # Labels.
-color brightmagenta "^[[:space:]]*[A-Z_a-z]+:[[:space:]]*$"
+color brightmagenta "^[[:blank:]]*[A-Z_a-z][0-9A-Z_a-z]*:[[:blank:]]*$"
+color normal ":[[:blank:]]*$"
 
-color green "\<(float|double|bool|char|int|short|long|sizeof|enum|void|auto|static|const|struct|union|typedef|extern|(un)?signed|inline)\>"
+# Types and related keywords.
+color green "\<(auto|bool|char|const|double|enum|extern|float|inline|int|long|restrict|short|signed|sizeof|static|struct|typedef|union|unsigned|void)\>"
 color green "\<([[:lower:]][[:lower:]_]*|(u_?)?int(8|16|32|64))_t\>"
-color green "\<(class|namespace|template|public|protected|private|typename|this|friend|virtual|override|using|mutable|volatile|register|explicit)\>"
-color brightyellow "\<(for|if|while|do|else|case|default|switch)\>"
+color green "\<(_(Alignas|Alignof|Atomic|Bool|Complex|Generic|Imaginary|Noreturn|Static_assert|Thread_local))\>"
+color green "\<(class|explicit|friend|mutable|namespace|override|private|protected|public|register|template|this|typename|using|virtual|volatile)\>"
+
+# Flow control.
+color brightyellow "\<(if|else|for|while|do|switch|case|default)\>"
 color brightyellow "\<(try|throw|catch|operator|new|delete)\>"
-color magenta "\<(goto|continue|break|return)\>"
-color brightmagenta "'([^'\]|(\\["'abfnrtv\\]))'" "'\\(([0-3]?[0-7]{1,2}))'" "'\\x[0-9A-Fa-f]{1,2}'"
+color magenta "\<(break|continue|goto|return)\>"
+
+# Single-quoted stuff (characters, backslash escapes, hex and octal byte codes).
+color brightmagenta "'([^'\]|\\(["'\abfnrtv]|x[[:xdigit:]]{1,2}|[0-3]?[0-7]{1,2}))'"
 
 # GCC builtins.
-color cyan "__attribute__[[:space:]]*\(\([^)]*\)\)" "__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__"
+color cyan "__attribute__[[:blank:]]*\(\([^)]*\)\)" "__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__"
 
-# Strings.  In general you will want your strings and comments to come last,
-# because highlighting rules are applied in the order they are read in.
-color brightyellow ""([^"]|\\")*"" "#[[:space:]]*include[[:space:]]+<[^[:blank:]=]*>"
+# Strings and names of included files.
+color brightyellow ""([^"]|\\")*"" "#[[:blank:]]*include[[:blank:]]*<[^>]+>"
 
 # Preprocessor directives.
-color brightcyan start="^[[:space:]]*#[[:space:]]*(if(n?def)?|elif|warning|error|pragma)\>" end="(\`|[^\\])$"
-color brightcyan "^[[:space:]]*#[[:space:]]*(define|else|endif|include(_next)?|undef)\>"
+color brightcyan start="^[[:blank:]]*#[[:blank:]]*(if(n?def)?|elif|warning|error|pragma)\>" end="(\`|[^\])$"
+color brightcyan "^[[:blank:]]*#[[:blank:]]*((define|else|endif|include(_next)?|line|undef)\>|$)"
 
 # Comments.
 color brightblue "//.*"

syntax/changelog.nanorc

@@ -1,5 +1,8 @@
 ## Syntax highlighting for Changelogs.
 
+## Original author:  Benno Schulenberg
+## License:  GPL version 3 or newer
+
 syntax changelog "Change[Ll]og[^/]*$"
 
 # Author lines.
@@ -10,13 +13,13 @@ color red "^(19|20)[0-9-]{8}"
 color yellow "<[^>]*@[^>]*>"
 
 # Command-line options.
-color cyan "[[:space:]]-[a-zA-Z\$]" "--[8a-z-]+"
+color cyan "[[:blank:]]-[a-zA-Z\$]|--[8a-z-]+"
 # Bug and patch numbers.
-color cyan "(BZ|bug|patch)[ ]#[0-9]+" "PR [[:alnum:]]+/[0-9]+"
+color cyan "(BZ|bug|patch)[ ]#[0-9]+|PR [[:alnum:]]+/[0-9]+"
 # Probable constants, for variety.
 color brightred "\<[A-Z_][0-9A-Z_]+\>"
 # Key sequences.
-color brightblue "\^[A-Z^\]" "\<M-." "\<F1?[0-9]" "(\^|M-)Space"
+color brightblue "\^[A-Z^\]|\<M-.|\<F1?[0-9]|(\^|M-)Space"
 
 # Changed files.
 color magenta start="^(	| {8})\* " end="(:( |$)|^$)"

syntax/cmake.nanorc

@@ -3,17 +3,20 @@
 syntax cmake "(CMakeLists\.txt|\.cmake)$"
 comment "#"
 
-color green "^[[:space:]]*[0-9A-Za-z_]+"
-icolor brightyellow "^[[:space:]]*(include|include_directories|include_external_msproject)\>"
+color green "^[[:blank:]]*[0-9A-Za-z_]+"
+icolor brightyellow "^[[:blank:]]*(include|include_directories|include_external_msproject)\>"
 
-icolor brightgreen "^[[:space:]]*((else|end)?if|else|(end)?while|(end)?foreach|break)\>"
-color brightgreen "\<(NOT|COMMAND|POLICY|TARGET|EXISTS|IS_(DIRECTORY|ABSOLUTE)|DEFINED)[[:space:]]"
-color brightgreen "[[:space:]](OR|AND|IS_NEWER_THAN|MATCHES|(STR|VERSION_)?(LESS|GREATER|EQUAL))[[:space:]]"
+icolor brightgreen "^[[:blank:]]*((else|end)?if|else|(end)?while|(end)?foreach|break)\>"
+color brightgreen "\<(NOT|COMMAND|POLICY|TARGET|EXISTS|IS_(DIRECTORY|ABSOLUTE)|DEFINED)[[:blank:]]"
+color brightgreen "[[:blank:]](OR|AND|IS_NEWER_THAN|MATCHES|(STR|VERSION_)?(LESS|GREATER|EQUAL))[[:blank:]]"
 
-icolor brightred "^[[:space:]]*((end)?(function|macro)|return)"
+icolor brightred "^[[:blank:]]*((end)?(function|macro)|return)"
 
 icolor cyan start="\$(ENV)?\{" end="\}"
 color magenta "\<(APPLE|UNIX|WIN32|CYGWIN|BORLAND|MINGW|MSVC(_IDE|60|71|80|90)?)\>"
 
-color brightblue "(^|[[:space:]])#.*"
+# Comments.
+color brightblue "(^|[[:blank:]])#.*"
+
+# Trailing whitespace.
 color ,green "[[:space:]]+$"

syntax/css.nanorc

@@ -3,9 +3,18 @@
 syntax css "\.css$"
 comment "/*|*/"
 
-color brightred     "."
-color brightyellow  start="\{" end="\}"
-color brightwhite   start=":" end="([;^\{]|$)"
-color brightblue    ":active|:focus|:hover|:link|:visited|:link|:after|:before"
-color brightblue    start="/\*" end="\*/"
-color green         ";|:|\{|\}"
+# First make everything red:
+color brightred "."
+# Then everything between braces yellow:
+color brightyellow start="\{" end="\}"
+# Then everything after a colon white:
+color brightwhite start=":" end="([;^{]|$)"
+
+# Pseudo-classes:
+color brightcyan ":(active|checked|focus|hover|link|visited|after|before)\>"
+
+# Comments:
+color brightblue start="/\*" end="\*/"
+
+# Syntactic characters:
+color green ";|:|\{|\}"

syntax/default.nanorc

@@ -4,20 +4,27 @@
 syntax default
 comment "#"
 
-# Comments.
-color cyan "^[[:space:]]*#.*"
-
 # Spaces in front of tabs.
 color ,red " +	+"
 
-# Nano's name, including version.
-color brightred "(GNU )?[Nn]ano [1-4]\.[0-9][-.[:alnum:]]*\>"
+# Nano's release motto, then name plus version.
+color italic,lime "\<[Nn]ano [1-6]\.[0-9][-.[:alnum:]]* "[^"]+""
+color brightred "\<(GNU )?[Nn]ano [1-6]\.[0-9][-.[:alnum:]]*\>"
+
+# Dates
+color latte "\<[12][0-9]{3}\.(0[1-9]|1[012])\.(0[1-9]|[12][0-9]|3[01])\>"
 
 # Email addresses.
 color magenta "<[[:alnum:].%_+-]+@[[:alnum:].-]+\.[[:alpha:]]{2,}>"
 
+# URLs.
+color lightblue "\<https?://\S+\.\S+[^[:space:],.)]"
+
 # Bracketed captions in certain config files.
 color brightgreen "^\[[^][]+\]$"
 
+# Comments.
+color cyan "^[[:blank:]]*#.*"
+
 # Control codes.
-color latte "[[:cntrl:]]"
+color orange "[[:cntrl:]]"

syntax/elisp.nanorc

@@ -28,6 +28,6 @@ color brightred "\<(t|nil)\>"
 color blue ":(\w|[?-])+"
 # Strings
 color yellow start="^[[:blank:]]+"" end="[^\]""
-color yellow ""(\\.|[^"])*""
+color yellow ""([^"\]|\\.)*""
 # Comments
-color cyan "(^|[[:space:]]);.*"
+color cyan "(^|[[:blank:]]);.*"

syntax/email.nanorc

@@ -11,7 +11,7 @@ color yellow "^> ?> ?>.*"
 color brightmagenta "<[^@]+@[^@]+>"
 
 # URLs.
-color brightblue "(https?|ftp)://\S+\.\S+[^\s.)]"
+color brightblue "(https?|ftp)://\S+\.\S+[^[:space:].)]"
 
 # Signatures, even quoted ones.
 color yellow start="^>* ?-- $" end="^>* ?$"

syntax/extra/ada.nanorc

@@ -30,7 +30,7 @@ color cyan "'[[:alnum:]]+"
 color green "\<[0-9][0-9A-Fa-f_#.+-]*"
 
 # Characters / Strings
-color red "'.'" ""[^"]*""
+color red "'.'|"[^"]*""
 
 # Comments
 color brightblue "--.*"

syntax/extra/debian.nanorc

@@ -1,21 +0,0 @@
-## Syntax highlighting for apt's sources.list.
-
-syntax sources.list "sources\.list(\.d/.*\.list)?(~|\.old|\.save)?$"
-comment "#"
-
-# Coloring the deb lines, working from tail to head.  First the
-# components -- well, everything, and thus also the components.
-color brightmagenta "^deb.*"
-# Distribution -- well, everything, except the components.
-color brightred "^deb(-src)?\s+.*((ftp|https?|rsh|ssh|copy|file|spacewalk|tor):/\S+|cdrom:\[.+\]/)\s+\S+"
-# URIs.
-color brightgreen "^deb(-src)?\s+.*(ftp|https?|rsh|ssh|copy|file|spacewalk|tor):/\S+"
-# CDroms.
-color brightgreen "^deb(-src)?\s+.*cdrom:\[.+\]/"
-# Options.
-color brightcyan "^deb(-src)?\s+\[.+\]\s+"
-# And finally the initial deb tag.
-color yellow "^deb(-src)?"
-
-# Comments.
-color brightblue "#.*"

syntax/extra/fortran.nanorc

@@ -34,7 +34,7 @@ icolor yellow "\<(.or.|repeat|select case|then|where|while)\>"
 icolor magenta "\<(continue|cycle|exit|go?to|result|return)\>"
 
 # Strings.
-color yellow "<[^= 	]*>" ""(\\.|[^"])*""
+color yellow ""([^"\]|\\.)*""
 
 # Comments.
 color blue "!.*"

syntax/extra/gentoo.nanorc

@@ -1,74 +0,0 @@
-## Syntax highlighting for Gentoo ebuilds/eclasses,
-## and (further down) for Portage control files.
-
-syntax ebuild "\.e(build|class|blit)$"
-comment "#"
-
-## All the standard portage functions:
-color brightgreen "(^|\<default_)src_(unpack|prepare|configure|compile|install|test)\>"
-color brightgreen "^pkg_(config|nofetch|info|pretend|setup|(pre|post)(inst|rm))\>"
-color brightgreen "\<default(_pkg_nofetch|_src_(unpack|prepare|configure|compile|test))?\>"
-## Bash-related syntax:
-color green "\<(break|case|continue|do|done|elif|else|esac|exit|fi|for|function|if|in|read|return|select|shift|then|time|until|while)\>"
-color green "\<(declare|eval|exec|export|let|local)\>"
-color green "[{}():;|`$<>!=&\\]" "(\]|\[)"
-color green "-[defhnrsuwxzL]\>"
-color green "-(eq|ne|gt|lt|ge|le)\>"
-## Variables... official portage ones in red, all others in bright red:
-color brightred "\$[-0-9@*#?$!]" "\$[[:alpha:]_][[:alnum:]_]*"
-color brightred "\$\{[#!]?([-@*#?$!]|[0-9]+|[[:alpha:]_][[:alnum:]_]*)(\[([[:digit:]]|@)+\])?(([#%/]|:?[-=?+])[^}]*\}|\[|\})"
-color red "\<(EAPI|ARCH|HOMEPAGE|DESCRIPTION|IUSE|SRC_URI|LICENSE|SLOT|KEYWORDS|[BHPR]?DEPEND|PROVIDE|PROPERTIES|REQUIRED_USE|RESTRICT|USERLAND)\>"
-color red "\<(S|E?D|T|PV|PF|P|PN|PR|PVR|A|CATEGORY|DISTDIR|FILESDIR|EPREFIX|E?ROOT|WORKDIR)\>"
-color red "\<(AS|C(PP|XX)?|LD)FLAGS\>" "\<C(HOST|TARGET|BUILD)\>" "\<(MERGE_TYPE|REPLACING_VERSIONS|REPLACED_BY_VERSION)\>"
-color red "\<EBUILD_PHASE(_FUNC)?\>"
-color red "\<QA_((TEXTRELS|EXECSTACK|WX_LOAD)(_[a-zA-Z_0-9]+)?|DT_HASH|PRESTRIPPED)\>"
-color red "\<(PATCHES|(HTML_)?DOCS)\>" "\<WANT_(AUTO(CONF|MAKE)|LIBTOOL)\>" "\<AT_M4DIR\>"
-## Portage commands:
-color magenta "\<(use(_(with|enable|if_iuse)|x)?|in_iuse) [!a-zA-Z0-9_+ -]*" "inherit.*"
-color brightblue "\<e(begin|end|conf|install|make|qmake4|ant|(qa)?warn|infon?|error|log|patch(_user)?|new(group|user))\>"
-color brightblue "\<e(pause|beep|mktemp|(cvs|svn)_clean|punt_cxx)\>" "\<e(aclocal|auto(reconf|header|conf|make)|libtoolize)\>"
-color brightblue "\<e(stack|shopts|umask)_(push|pop)\>" "\<version_is_at_least\>"
-color brightblue "\<make_desktop_entry\>" "\<unpack(_(makeself|pdv))?\>"
-color brightblue "\<(die|hasv?|inherit|nonfatal)\>" "\<(use(_(with|enable|if_iuse)|x)?|in_iuse)\>" "\<(has|best)_version\>"
-color brightblue "\<(do|new)(ins|(games)?s?bin|doc|lib(\.so|\.a)?|man|info|exe|initd|confd|envd|pam|menu|icon)\>"
-color brightblue "\<do(compress|header|python|sed|dir|hard|sym|html|jar|mo)\>" "\<keepdir\>"
-color brightblue "\<prepall(docs|info|man|strip)?\>" "\<prep(info|lib|lib\.(so|a)|man|strip|gamesdirs)\>"
-color brightblue "\<(doc|ins|exe)?into\>" "\<(f|games)(owners|perms)\>" "\<(exe|ins|dir)opts\>"
-color brightblue "\<tc-get(BUILD_)?(AR|AS|CC|CPP|CXX|LD|NM|OBJCOPY|PKG_CONFIG|RANLIB)\>"
-color brightblue "\<tc-(arch(-kernel)?|export|has-(tls|openmp))\>"
-## Common commands used in ebuilds:
-color blue "\<(awk|cat|cd|chmod|chown|cp|echo|env|find|e?grep|ln|make|mkdir|mv|popd|printf|pushd|rm|rmdir|sed|set|tar|touch|unset|xargs)\>"
-## Comments (doesn't work that well):
-color yellow "(^|[[:space:]])#.*"
-## Strings (doesn't work that well):
-color brightyellow ""(\\.|[^\"])*"" "'(\\.|[^'])*'"
-## Trailing space is bad!
-color ,green "[[:space:]]+$"
-## Mixed whitespace is also bad.
-color ,green " 	"
-
-
-syntax /etc/portage "\.(accept_keywords|env|keywords|mask|unmask|use)(/.+)?$"
-comment "#"
-
-## Base text:
-color green ".+"
-## Likely version and slot numbers:
-color magenta "-[[:digit:].]+(_(alpha|beta|pre|rc|p)[[:digit:]]*)*(-r[[:digit:]]+)?([:[:space:]]|$)"
-color magenta ":[^[:space:]]+([[:space:]]|$)"
-## Use flags (must come after version/slot):
-color brightred "[[:space:]]+\+?[A-Za-z0-9+_@-]+"
-color brightblue "[[:space:]]+-[A-Za-z0-9+_@-]+"
-## Accepted arches:
-color white "[~-]?\<(alpha|amd64|arm(64)?|hppa|ia64|m68k|mips|nios2|ppc(64)?|riscv|s390|sh|sparc|x86)(-(aix|(f|free|net|open)bsd|cygwin|hpux|interix|linux|macos|mint|solaris|winnt))?\>"
-color white "[[:space:]][*~-]?\*"
-## Categories:
-color cyan "^[[:space:]]*[^/]*/"
-## Masking regulators:
-color brightmagenta "^[[:space:]]*(=|~|<|<=|>|>=)"
-## Comments:
-color yellow "#.*"
-## Trailing space is bad!
-color ,green "[[:space:]]+$"
-## Mixed whitespace is also bad.
-color ,green " 	"

syntax/extra/haskell.nanorc

@@ -28,9 +28,9 @@ color magenta "\<(Bounded|Data|Enum|Eq|Floating|Fractional|Functor|Integral|Mona
 color brightred "undefined"
 
 # Strings
-color yellow ""([^\"]|\\.)*""
+color yellow ""([^"\]|\\.)*""
 # Characters
-color brightyellow "'([^\']|\\.)'"
+color brightyellow "'([^'\]|\\.)'"
 
 # Comments
 color green "--.*"

syntax/go.nanorc

@@ -1,5 +1,8 @@
 ## Syntax highlighting for Go.
 
+## Original author:  Robert Clausecker
+## License:  CC0 (public domain)
+
 syntax go "\.go$"
 comment "//"
 
@@ -8,7 +11,7 @@ formatter gofmt -w
 # Types.
 color green "\<(bool|u?int(8|16|32|64)?|float(32|64)|complex(64|128)|byte|rune|uintptr|string|error)\>"
 color green "\<(chan|const|func|interface|map|struct|type|var)\>"
-color green "<-[[:space:]]*chan\>|\<chan[[:space:]]*<-"
+color green "<-[[:blank:]]*chan\>|\<chan[[:blank:]]*<-"
 
 # Predefined functions.
 color blue "\<(append|cap|close|complex|copy|delete|imag|len|make|new|panic|print|println|real|recover)\>"
@@ -23,24 +26,23 @@ color magenta "\<(break|continue|fallthrough|goto|return)\>"
 color brightcyan "\<(package|import)\>"
 
 # Literals.
-color red "\<([1-9][0-9]*|0[0-7]*|0[xX][0-9A-Fa-f]+)\>"
+color red "\<(true|false|nil|iota|_)\>"
+color red "\<([1-9][0-9]*|0[0-7]*|0[xX][[:xdigit:]]+)\>"
 color red "\<[0-9]+\.[0-9]*([eE][+-]?[0-9]+)?i?\>"
 color red "\<[0-9]+[eE][+-]?[0-9]+i?\>"
 color red "\B\.[0-9]+([eE][+-]?[0-9]+)?i?\>"
 color red "\<[0-9]+i\>"
 
 # Strings and characters; slightly fuzzy.
-color red "\<(true|false|nil|iota|_)\>"
-color red "'(\\.|[^'])+'"
-color red ""(\\.|[^"])*""
-color red start=""(\\.|[^"])*\\[[:space:]]*$" end="^(\\.|[^"])*""
+color red ""([^"\]|\\.)*"|'([^'\]|\\.)+'"
+color red start=""([^"\]|\\.)*\\[[:blank:]]*$" end="^([^"\]|\\.)*""
 
 # Comments.
 color brightblue "//.*"
 color brightblue start="/\*" end="\*/"
 
 # Special comments.
-color brightcyan "//[[:space:]]*\+build[[:space:]]+(([a-zA-Z_0-9]+[[:space:]]*)+,[[:space:]]*)*[a-zA-Z_0-9]+"
+color brightcyan "//[[:blank:]]*\+build[[:blank:]]+(([a-zA-Z_0-9]+[[:blank:]]*)+,[[:blank:]]*)*[a-zA-Z_0-9]+"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"

syntax/groff.nanorc

@@ -1,6 +1,6 @@
 ## Syntax highlighting for groff.
 
-syntax groff "(/tmac\.[^/]+$|\.(m[ems]|rof|tmac)$)"
+syntax groff "\.(m[ems]|rof|tmac)$|/tmac\.[^/]+$"
 comment ".\""
 
 # The argument of .ds or .nr
@@ -13,7 +13,7 @@ color brightmagenta "\\f(.|\(..)" "\\s(\+|\-)?[0-9]"
 color cyan "\\(\\)?n(.|\(..)"
 color cyan start="\\(\\)?n\[" end="]"
 # Requests
-color brightgreen "^\.[[:space:]]*[^[:space:]]*"
+color brightgreen "^\.[[:blank:]]*[^[:space:]]*"
 # Comments
 color yellow "^\.\\".*"
 # Strings

syntax/guile.nanorc

@@ -11,14 +11,13 @@ color brightcyan "\<define(-macro|-module|-public|-syntax)?\>"
 # Quoted symbols
 color brightyellow "'\<(\w|-)+\>"
 # Chars
-color brightmagenta "#\\."
-color brightmagenta "#\\\w+\>"
+color brightmagenta "#\\(.|\w+)"
 # Booleans
 color brightred "(#t|#f)\>"
 # Keywords
 color blue "#?:(\w|[?-])+"
 # Strings
 color yellow start="^[[:blank:]]+"" end="[^\]""
-color yellow ""(\\.|[^"])*""
+color yellow ""([^"\]|\\.)*""
 # Comments
-color cyan "(^|[[:space:]]);.*"
+color cyan "(^|[[:blank:]]);.*"

syntax/html.nanorc

@@ -25,7 +25,7 @@ color red "\<(rows(pan)?|rules|scheme|scope|scrolling|selected|shape|size|span|s
 color red "\<(tabindex|target|text|title|type|usemap|valign|value(type)?|vlink|vspace|width|xmlns|xml:space)="
 
 # Strings:
-color green ""(\\.|[^"])*""
+color green ""([^"\]|\\.)*""
 
 # Comments:
 color yellow start="<!--" end="-->"

syntax/javascript.nanorc

@@ -12,14 +12,14 @@ color brightyellow "\<(await|export|import|throw|try|catch|finally|new|delete)\>
 color magenta "\<(break|continue|return|yield)\>"
 
 # Octal/decimal and hexadecimal numbers.
-color cyan "\<([0-9]+|0x[0-9A-Fa-f]+)\>"
+color cyan "\<([0-9]+|0x[[:xdigit:]]+)\>"
 # Special values.
 color cyan "\<(true|false|null|undefined)\>"
 
 # Strings.
-color brightmagenta ""(\\.|[^"])*"" "'(\\.|[^'])*'" "`(\\.|[^`])*`"
+color brightmagenta ""([^"\]|\\.)*"|'([^'\]|\\.)*'|`([^`\]|\\.)*`"
 # Comments.
-color brightblue "(^|[[:space:]])//.*"
+color brightblue "(^|[[:blank:]])//.*"
 color brightblue start="/\*" end="\*/"
 
 # Trailing whitespace.

syntax/json.nanorc

@@ -8,18 +8,18 @@ syntax json "\.json$"
 comment ""
 
 # Numbers (used as value).
-color green ":[[:space:]]*\-?(0|[1-9][0-9]*)(\.[0-9]+)?([Ee]?[-+]?[0-9]+)?"
+color green ":[[:blank:]]*\-?(0|[1-9][0-9]*)(\.[0-9]+)?([Ee]?[-+]?[0-9]+)?"
 # Values (well, any string).
 color brightmagenta "".+""
 # Hex numbers (used as value).
-color green ":[[:space:]]*"#[0-9abcdefABCDEF]+""
+color green ":[[:blank:]]*"#[[:xdigit:]]+""
 # Escapes.
-color green "\\\\" "\\"" "\\[bfnrt]" "\\u[0-9abcdefABCDEF]{4})"
+color green "\\(["\/bfnrt]|u[[:xdigit:]]{4})"
 # Special words.
 color green "\<(true|false|null)\>"
 
 # Names (very unlikely to contain a quote).
-color brightblue ""[^"]+"[[:space:]]*:"
+color brightblue ""[^"]+"[[:blank:]]*:"
 
 # Brackets, braces, and separators.
 color brightblue "\[" "\]"
@@ -27,7 +27,7 @@ color brightred "\{" "\}"
 color brightred "," ":"
 
 # Comments.
-color cyan "(^|[[:space:]]+)(//|#).*"
+color cyan "(^|[[:blank:]]+)(//|#).*"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"

syntax/lua.nanorc

@@ -20,7 +20,7 @@ color normal "\.\.\."
 color brightblue "\<(do|end|while|repeat|until|if|elseif|then|else|for|in|function|local|return|break)\>"
 
 # Keywords
-color brightyellow "\<(_G|_VERSION|assert|collectgarbage|dofile|error|getfenv|getmetatable|ipairs|load|loadfile|module|next|pairs|pcall|print|rawequal|rawget|rawlen|rawset|require|select|setfenv|setmetatable|tonumber|tostring|type|unpack|xpcall)\s*\("
+color brightyellow "\<(_G|_VERSION|assert|collectgarbage|dofile|error|getfenv|getmetatable|ipairs|load|loadfile|module|next|pairs|pcall|print|rawequal|rawget|rawlen|rawset|require|select|setfenv|setmetatable|tonumber|tostring|type|unpack|xpcall)[[:blank:]]*\("
 
 # Standard library
 color brightyellow "\<coroutine\.(create|isyieldable|resume|running|status|wrap|yield)\>"
@@ -45,7 +45,7 @@ color brightmagenta "\<(false|nil|true)\>"
 
 # Decimal and hexadecimal numbers
 color red "\<[0-9]+(\.[0-9]*)?([Ee][+-]?[0-9]+)?\>"
-color red "\<0x[0-9A-Fa-f]+(\.[0-9A-Fa-f]*)?([Pp][+-]?[0-9]+)?\>"
+color red "\<0x[[:xdigit:]]+(\.[[:xdigit:]]*)?([Pp][+-]?[0-9]+)?\>"
 
 # Brackets
 color brightmagenta "\(|\)|\[|\]|\{|\}"
@@ -54,7 +54,7 @@ color brightmagenta "\(|\)|\[|\]|\{|\}"
 color brightcyan "^#!.*"
 
 # Strings
-color red ""(\\.|[^"\])*"|'(\\.|[^'\])*'"
+color red ""([^"\]|\\.)*"|'([^'\]|\\.)*'"
 
 # Simple comments and multiline comments
 color green "--.*"

syntax/makefile.nanorc

@@ -18,7 +18,7 @@ color blue "\$+[{(][a-zA-Z0-9_-]+[})]"
 color brightblue "^[^ 	]+:"
 
 # Comments.
-color green "(^|[[:space:]]+)#.*"
+color green "(^|[[:blank:]]+)#.*"
 
 # Trailing whitespace.
 color ,green "[[:space:]]+$"

syntax/markdown.nanorc

@@ -1,5 +1,8 @@
 ## Syntax highlighting for Markdown files.
 
+## Original authors:  Ryan Westlund and Benno Schulenberg
+## License:  GPL version 3 or newer
+
 syntax markdown "\.md$"
 comment "<!--|-->"