version 0.5.1

Fixes #194

CHANGELOG.rst

@@ -3,6 +3,23 @@ Changelog
 
 kitty is a feature full, cross-platform, *fast*, GPU based terminal emulator.
 
+version 0.5.1 [2017-12-01]
+---------------------------
+
+- Add an option to control the thickness of lines in box drawing characters
+
+- Increase max. allowed ligature length to nine characters
+
+- Fix text not vertically centered when adjusting line height
+
+- Fix unicode block characters not being rendered properly
+
+- Fix shift+up/down not generating correct escape codes
+
+- Image display: Fix displaying images taller than two screen heights not
+  scrolling properly
+
+
 version 0.5.0 [2017-11-19]
 ---------------------------
 

kitty/boss.py

@@ -12,7 +12,7 @@ from .fast_data_types import (
     destroy_sprite_map, glfw_post_empty_event, layout_sprite_map
 )
 from .fonts.render import prerender, resize_fonts, set_font_family
-from .keys import get_key_map, get_sent_data, get_shortcut
+from .keys import get_key_map, get_shortcut
 from .session import create_session
 from .tabs import SpecialWindow, TabManager
 from .utils import (
@@ -199,13 +199,6 @@ class Boss:
                 passthrough = f(*key_action.args)
                 if passthrough is not True:
                     return True
-        key, scancode, action, mods = self.current_key_press_info
-        data = get_sent_data(
-            self.opts.send_text_map, key, scancode, mods, window, action
-        )
-        if data:
-            window.write_to_child(data)
-            return True
         return False
 
     def combine(self, *actions):

kitty/child-monitor.c

@@ -391,7 +391,7 @@ resize_pty(ChildMonitor *self, PyObject *args) {
     if (fd == -1) FIND(add_queue, add_queue_count);
     if (fd != -1) {
         if (!pty_resize(fd, &dim)) PyErr_SetFromErrno(PyExc_OSError);
-    } else fprintf(stderr, "Failed to send resize signal to child with id: %lu (children count: %u) (add queue: %lu)\n", window_id, self->count, add_queue_count);
+    } else fprintf(stderr, "Failed to send resize signal to child with id: %lu (children count: %u) (add queue: %zu)\n", window_id, self->count, add_queue_count);
     children_mutex(unlock);
     if (PyErr_Occurred()) return NULL;
     Py_RETURN_NONE;

kitty/config.py

@@ -19,7 +19,7 @@ from .rgb import to_color
 from .utils import safe_print
 
 key_pat = re.compile(r'([a-zA-Z][a-zA-Z0-9_-]*)\s+(.+)$')
-MINIMUM_FONT_SIZE = 6
+MINIMUM_FONT_SIZE = 4
 
 
 def to_font_size(x):
@@ -175,7 +175,7 @@ def parse_send_text_bytes(text):
     return ast.literal_eval("'''" + text + "'''").encode('utf-8')
 
 
-def parse_send_text(val):
+def parse_send_text(val, keymap):
     parts = val.split(' ')
 
     def abort(msg):
@@ -187,28 +187,10 @@ def parse_send_text(val):
 
     if len(parts) < 3:
         return abort('Incomplete')
-
-    text = ' '.join(parts[2:])
     mode, sc = parts[:2]
-    mods, key = parse_shortcut(sc.strip())
-    if key is None:
-        return abort('Invalid shortcut')
-    text = parse_send_text_bytes(text)
-    if not text:
-        return abort('Empty text')
-
-    if mode in ('all', '*'):
-        modes = parse_send_text.all_modes
-    else:
-        modes = frozenset(mode.split(',')).intersection(
-            parse_send_text.all_modes
-        )
-        if not modes:
-            return abort('Invalid keyboard modes')
-    return {mode: {(mods, key): text} for mode in modes}
-
-
-parse_send_text.all_modes = frozenset({'normal', 'application', 'kitty'})
+    text = ' '.join(parts[2:])
+    key_str = '{} send_text {} {}'.format(sc, mode, text)
+    return parse_key(key_str, keymap)
 
 
 def to_open_url_modifiers(val):
@@ -238,6 +220,13 @@ def adjust_line_height(x):
     return int(x)
 
 
+def box_drawing_scale(x):
+    ans = tuple(float(x.strip()) for x in x.split(','))
+    if len(ans) != 4:
+        raise ValueError('Invalid box_drawing scale, must have four entries')
+    return ans
+
+
 type_map = {
     'adjust_line_height': adjust_line_height,
     'scrollback_lines': positive_int,
@@ -267,6 +256,7 @@ type_map = {
     'use_system_wcwidth': to_bool,
     'macos_hide_titlebar': to_bool,
     'macos_option_as_alt': to_bool,
+    'box_drawing_scale': box_drawing_scale,
 }
 
 for name in (
@@ -285,11 +275,6 @@ def parse_config(lines, check_keys=True):
     ans = {
         'keymap': {},
         'symbol_map': {},
-        'send_text_map': {
-            'kitty': {},
-            'normal': {},
-            'application': {}
-        }
     }
     if check_keys:
         all_keys = defaults._asdict()
@@ -307,9 +292,8 @@ def parse_config(lines, check_keys=True):
                 ans['symbol_map'].update(parse_symbol_map(val))
                 continue
             if key == 'send_text':
-                stvals = parse_send_text(val)
-                for k, v in ans['send_text_map'].items():
-                    v.update(stvals.get(k, {}))
+                # For legacy compatibility
+                parse_send_text(val, ans['keymap'])
                 continue
             if check_keys:
                 if key not in all_keys:
@@ -360,11 +344,6 @@ def merge_configs(defaults, vals):
             newvals = vals.get(k, {})
             if k == 'keymap':
                 ans['keymap'] = merge_keymaps(v, newvals)
-            elif k == 'send_text_map':
-                ans[k] = {
-                    m: merge_dicts(mm, newvals.get(m, {}))
-                    for m, mm in v.items()
-                }
             else:
                 ans[k] = merge_dicts(v, newvals)
         else:

kitty/constants.py

@@ -11,7 +11,7 @@ from collections import namedtuple
 from .fast_data_types import set_boss as set_c_boss
 
 appname = 'kitty'
-version = (0, 5, 0)
+version = (0, 5, 1)
 str_version = '.'.join(map(str, version))
 _plat = sys.platform.lower()
 isosx = 'darwin' in _plat
@@ -67,7 +67,11 @@ cell_size = ViewportSize()
 base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 terminfo_dir = os.path.join(base_dir, 'terminfo')
 logo_data_file = os.path.join(base_dir, 'logo', 'kitty.rgba')
-shell_path = pwd.getpwuid(os.geteuid()).pw_shell or '/bin/sh'
+try:
+    shell_path = pwd.getpwuid(os.geteuid()).pw_shell or '/bin/sh'
+except KeyError:
+    print('Failed to read login shell from /etc/passwd for current user, falling back to /bin/sh', file=sys.stderr)
+    shell_path = '/bin/sh'
 
 GLint = ctypes.c_int if ctypes.sizeof(ctypes.c_int) == 4 else ctypes.c_long
 GLuint = ctypes.c_uint if ctypes.sizeof(ctypes.c_uint) == 4 else ctypes.c_ulong

kitty/fonts.c

@@ -9,6 +9,7 @@
 #include "state.h"
 
 #define MISSING_GLYPH 4
+#define MAX_NUM_EXTRA_GLYPHS 8
 
 typedef uint16_t glyph_index;
 typedef void (*send_sprite_to_gpu_func)(unsigned int, unsigned int, unsigned int, uint8_t*);
@@ -21,13 +22,17 @@ typedef struct SpecialGlyphCache SpecialGlyphCache;
 enum {NO_FONT=-3, MISSING_FONT=-2, BLANK_FONT=-1, BOX_FONT=0};
 
 
+typedef struct {
+    glyph_index data[MAX_NUM_EXTRA_GLYPHS];
+} ExtraGlyphs;
+
 struct SpritePosition {
     SpritePosition *next;
     bool filled, rendered;
     sprite_index x, y, z;
     uint8_t ligature_index;
     glyph_index glyph;
-    uint64_t extra_glyphs;
+    ExtraGlyphs extra_glyphs;
 };
 
 struct SpecialGlyphCache {
@@ -70,6 +75,7 @@ typedef struct {
 
 static Fonts fonts = {0};
 
+
 // Sprites {{{
 
 static inline void 
@@ -104,15 +110,25 @@ do_increment(int *error) {
 }
 
 
+static inline bool
+extra_glyphs_equal(ExtraGlyphs *a, ExtraGlyphs *b) {
+    for (size_t i = 0; i < MAX_NUM_EXTRA_GLYPHS; i++) {
+        if (a->data[i] != b->data[i]) return false;
+        if (a->data[i] == 0) return true;
+    }
+    return true;
+}
+
+
 static SpritePosition*
-sprite_position_for(Font *font, glyph_index glyph, uint64_t extra_glyphs, uint8_t ligature_index, int *error) {
+sprite_position_for(Font *font, glyph_index glyph, ExtraGlyphs *extra_glyphs, uint8_t ligature_index, int *error) {
     glyph_index idx = glyph & 0x3ff;
     SpritePosition *s = font->sprite_map + idx;
     // Optimize for the common case of glyph under 1024 already in the cache
-    if (LIKELY(s->glyph == glyph && s->filled && s->extra_glyphs == extra_glyphs && s->ligature_index == ligature_index)) return s;  // Cache hit
+    if (LIKELY(s->glyph == glyph && s->filled && extra_glyphs_equal(&s->extra_glyphs, extra_glyphs) && s->ligature_index == ligature_index)) return s;  // Cache hit
     while(true) {
         if (s->filled) {
-            if (s->glyph == glyph && s->extra_glyphs == extra_glyphs && s->ligature_index == ligature_index) return s;  // Cache hit
+            if (s->glyph == glyph && extra_glyphs_equal(&s->extra_glyphs, extra_glyphs) && s->ligature_index == ligature_index) return s;  // Cache hit
         } else {
             break;
         }
@@ -123,7 +139,7 @@ sprite_position_for(Font *font, glyph_index glyph, uint64_t extra_glyphs, uint8_
         s = s->next;
     }
     s->glyph = glyph;
-    s->extra_glyphs = extra_glyphs;
+    memcpy(&s->extra_glyphs, extra_glyphs, sizeof(ExtraGlyphs));
     s->ligature_index = ligature_index;
     s->filled = true;
     s->rendered = false;
@@ -179,7 +195,7 @@ free_maps(Font *font) {
 
 void
 clear_sprite_map(Font *font) {
-#define CLEAR(s) s->filled = false; s->rendered = false; s->glyph = 0; s->extra_glyphs = 0; s->x = 0; s->y = 0; s->z = 0; s->ligature_index = 0;
+#define CLEAR(s) s->filled = false; s->rendered = false; s->glyph = 0; memset(&s->extra_glyphs, 0, sizeof(ExtraGlyphs)); s->x = 0; s->y = 0; s->z = 0; s->ligature_index = 0;
     SpritePosition *s;
     for (size_t i = 0; i < sizeof(font->sprite_map)/sizeof(font->sprite_map[0]); i++) {
         s = font->sprite_map + i;
@@ -246,7 +262,7 @@ del_font(Font *f) {
 
 static unsigned int cell_width = 0, cell_height = 0, baseline = 0, underline_position = 0, underline_thickness = 0;
 static uint8_t *canvas = NULL;
-#define CELLS_IN_CANVAS 16
+#define CELLS_IN_CANVAS ((MAX_NUM_EXTRA_GLYPHS + 1) * 3)
 static inline void 
 clear_canvas(void) { memset(canvas, 0, CELLS_IN_CANVAS * cell_width * cell_height); }
 
@@ -267,11 +283,17 @@ update_cell_metrics() {
     CALL(fonts.bold_font_idx, 0, false); CALL(fonts.italic_font_idx, 0, false); CALL(fonts.bi_font_idx, 0, false);
     cell_metrics(fonts.fonts[fonts.medium_font_idx].face, &cell_width, &cell_height, &baseline, &underline_position, &underline_thickness);
     if (!cell_width) { PyErr_SetString(PyExc_ValueError, "Failed to calculate cell width for the specified font."); return NULL; }
+    unsigned int before_cell_height = cell_height;
     if (OPT(adjust_line_height_px) != 0) cell_height += OPT(adjust_line_height_px);
     if (OPT(adjust_line_height_frac) != 0.f) cell_height *= OPT(adjust_line_height_frac);
+    int line_height_adjustment = cell_height - before_cell_height;
     if (cell_height < 4) { PyErr_SetString(PyExc_ValueError, "line height too small after adjustment"); return NULL; }
     if (cell_height > 1000) { PyErr_SetString(PyExc_ValueError, "line height too large after adjustment"); return NULL; }
     underline_position = MIN(cell_height - 1, underline_position);
+    if (line_height_adjustment > 1) {
+        baseline += MIN(cell_height - 1, (unsigned)line_height_adjustment / 2);
+        underline_position += MIN(cell_height - 1, (unsigned)line_height_adjustment / 2);
+    }
     sprite_tracker_set_layout(cell_width, cell_height);
     global_state.cell_width = cell_width; global_state.cell_height = cell_height;
     free(canvas); canvas = malloc(CELLS_IN_CANVAS * cell_width * cell_height);
@@ -360,7 +382,7 @@ START_ALLOW_CASE_RANGE
         case ' ':
             return BLANK_FONT;
         case 0x2500 ... 0x2570:
-        case 0x2574 ... 0x257f:
+        case 0x2574 ... 0x259f:
         case 0xe0b0:
         case 0xe0b2:
             return BOX_FONT;
@@ -393,14 +415,14 @@ static inline glyph_index
 box_glyph_id(char_type ch) {
 START_ALLOW_CASE_RANGE
     switch(ch) {
-        case 0x2500 ... 0x257f:
+        case 0x2500 ... 0x259f:
             return ch - 0x2500;
         case 0xe0b0:
-            return 0x80;
+            return 0xfa;
         case 0xe0b2:
-            return 0x81;
+            return 0xfb;
         default:
-            return 0x82;
+            return 0xff;
     }
 END_ALLOW_CASE_RANGE
 }
@@ -411,7 +433,8 @@ static void
 render_box_cell(Cell *cell) {
     int error = 0;
     glyph_index glyph = box_glyph_id(cell->ch);
-    SpritePosition *sp = sprite_position_for(&fonts.fonts[BOX_FONT], glyph, 0, false, &error);
+    static ExtraGlyphs extra_glyphs = {{0}};
+    SpritePosition *sp = sprite_position_for(&fonts.fonts[BOX_FONT], glyph, &extra_glyphs, false, &error);
     if (sp == NULL) {
         sprite_map_set_error(error); PyErr_Print();
         set_sprite(cell, 0, 0, 0);
@@ -462,7 +485,7 @@ extract_cell_from_canvas(unsigned int i, unsigned int num_cells) {
 }
 
 static inline void
-render_group(unsigned int num_cells, unsigned int num_glyphs, Cell *cells, hb_glyph_info_t *info, hb_glyph_position_t *positions, Font *font, glyph_index glyph, uint64_t extra_glyphs) {
+render_group(unsigned int num_cells, unsigned int num_glyphs, Cell *cells, hb_glyph_info_t *info, hb_glyph_position_t *positions, Font *font, glyph_index glyph, ExtraGlyphs *extra_glyphs) {
     static SpritePosition* sprite_position[16];
     int error = 0;
     num_cells = MIN(sizeof(sprite_position)/sizeof(sprite_position[0]), num_cells);
@@ -550,7 +573,7 @@ check_cell_consumed(CellData *cell_data, Cell *last_cell) {
 }
 
 static inline glyph_index
-next_group(Font *font, unsigned int *num_group_cells, unsigned int *num_group_glyphs, Cell *cells, hb_glyph_info_t *info, unsigned int max_num_glyphs, unsigned int max_num_cells, uint64_t *extra_glyphs) {
+next_group(Font *font, unsigned int *num_group_cells, unsigned int *num_group_glyphs, Cell *cells, hb_glyph_info_t *info, unsigned int max_num_glyphs, unsigned int max_num_cells, ExtraGlyphs *extra_glyphs) {
     // See https://github.com/behdad/harfbuzz/issues/615 for a discussion of
     // how to break text into cells. In addition, we have to deal with
     // monospace ligature fonts that use dummy glyphs of zero size to implement
@@ -558,7 +581,7 @@ next_group(Font *font, unsigned int *num_group_cells, unsigned int *num_group_gl
     
     CellData cell_data;
     cell_data.cell = cells; cell_data.num_codepoints = num_codepoints_in_cell(cells); cell_data.codepoints_consumed = 0; cell_data.current_codepoint = cells->ch;
-#define LIMIT 5
+#define LIMIT (MAX_NUM_EXTRA_GLYPHS + 1)
     glyph_index glyphs_in_group[LIMIT];
     unsigned int ncells = 0, nglyphs = 0, n;
     uint32_t previous_cluster = UINT32_MAX, cluster;
@@ -584,27 +607,16 @@ next_group(Font *font, unsigned int *num_group_cells, unsigned int *num_group_gl
     }
     *num_group_cells = MAX(1, MIN(ncells, cell_limit));
     *num_group_glyphs = MAX(1, MIN(nglyphs, glyph_limit));
+    memset(extra_glyphs, 0, sizeof(ExtraGlyphs));
 
-#define G(n) ((uint64_t)(glyphs_in_group[n] & 0xffff))
     switch(nglyphs) {
         case 0:
         case 1:
-            *extra_glyphs = 0;
             break;
-        case 2:
-            *extra_glyphs = G(1);
-            break;
-        case 3:
-            *extra_glyphs = G(1) | (G(2) << 16);
-            break;
-        case 4:
-            *extra_glyphs = G(1) | (G(2) << 16) | (G(3) << 32);
-            break;
-        default:  // we only support a maximum of four extra glyphs per cell
-            *extra_glyphs = G(1) | (G(2) << 16) | (G(3) << 32) | (G(4) << 48);
+        default:
+            memcpy(&extra_glyphs->data, glyphs_in_group + 1, sizeof(glyph_index) * MIN(MAX_NUM_EXTRA_GLYPHS, nglyphs - 1));
             break;
     }
-#undef G
 #undef LIMIT
     return glyphs_in_group[0];
 }
@@ -633,11 +645,12 @@ shape_run(Cell *first_cell, index_type num_cells, Font *font) {
         clear_canvas();
 #endif
     unsigned int run_pos = 0, cell_pos = 0, num_group_glyphs, num_group_cells;
-    uint64_t extra_glyphs; glyph_index first_glyph;
+    ExtraGlyphs extra_glyphs;
+    glyph_index first_glyph;
     while(run_pos < num_glyphs && cell_pos < num_cells) {
         first_glyph = next_group(font, &num_group_cells, &num_group_glyphs, first_cell + cell_pos, info + run_pos, num_glyphs - run_pos, num_cells - cell_pos, &extra_glyphs);
         /* printf("Group: num_group_cells: %u num_group_glyphs: %u\n", num_group_cells, num_group_glyphs); */
-        render_group(num_group_cells, num_group_glyphs, first_cell + cell_pos, info + run_pos, positions + run_pos, font, first_glyph, extra_glyphs);
+        render_group(num_group_cells, num_group_glyphs, first_cell + cell_pos, info + run_pos, positions + run_pos, font, first_glyph, &extra_glyphs);
         run_pos += num_group_glyphs; cell_pos += num_group_cells;
     }
 }
@@ -665,10 +678,13 @@ test_shape(PyObject UNUSED *self, PyObject *args) {
 
     PyObject *ans = PyList_New(0);
     unsigned int run_pos = 0, cell_pos = 0, num_group_glyphs, num_group_cells;
-    uint64_t extra_glyphs; glyph_index first_glyph;
+    ExtraGlyphs extra_glyphs; 
+    glyph_index first_glyph;
     while(run_pos < num_glyphs && cell_pos < num) {
         first_glyph = next_group(font, &num_group_cells, &num_group_glyphs, line->cells + cell_pos, info + run_pos, num_glyphs - run_pos, num - cell_pos, &extra_glyphs);
-        PyList_Append(ans, Py_BuildValue("IIIK", num_group_cells, num_group_glyphs, first_glyph, extra_glyphs));
+        PyObject *eg = PyTuple_New(MAX_NUM_EXTRA_GLYPHS);
+        for (size_t g = 0; g < MAX_NUM_EXTRA_GLYPHS; g++) PyTuple_SET_ITEM(eg, g, Py_BuildValue("H", extra_glyphs.data[g]));
+        PyList_Append(ans, Py_BuildValue("IIIN", num_group_cells, num_group_glyphs, first_glyph, eg));
         run_pos += num_group_glyphs; cell_pos += num_group_cells;
     }
     if (face) { Py_CLEAR(face); free(font); }
@@ -778,10 +794,10 @@ sprite_map_set_layout(PyObject UNUSED *self, PyObject *args) {
 static PyObject*
 test_sprite_position_for(PyObject UNUSED *self, PyObject *args) {
     glyph_index glyph;
-    uint64_t extra_glyphs = 0;
-    if (!PyArg_ParseTuple(args, "H|I", &glyph, &extra_glyphs)) return NULL;
+    ExtraGlyphs extra_glyphs = {{0}};
+    if (!PyArg_ParseTuple(args, "H|I", &glyph, &extra_glyphs.data)) return NULL;
     int error;
-    SpritePosition *pos = sprite_position_for(&fonts.fonts[fonts.medium_font_idx], glyph, extra_glyphs, 0, &error);
+    SpritePosition *pos = sprite_position_for(&fonts.fonts[fonts.medium_font_idx], glyph, &extra_glyphs, 0, &error);
     if (pos == NULL) { sprite_map_set_error(error); return NULL; }
     return Py_BuildValue("HHH", pos->x, pos->y, pos->z);
 }

kitty/fonts/box_drawing.py

@@ -3,15 +3,23 @@
 # License: GPL v3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
 
 import math
+import os
 from functools import partial as p
 from itertools import repeat
 
 from kitty.utils import get_logical_dpi
 
+scale = (0.001, 1, 1.5, 2)
+
+
+def set_scale(new_scale):
+    global scale
+    scale = tuple(new_scale)
+
 
 def thickness(level=1, horizontal=True):
     dpi = get_logical_dpi()[0 if horizontal else 1]
-    pts = (0.001, 1, 1.5, 2)[level]
+    pts = scale[level]
     return int(math.ceil(pts * dpi / 72.0))
 
 
@@ -264,6 +272,49 @@ def inner_corner(buf, width, height, which='tl', level=1):
     draw_vline(buf, width, y1, y2, width // 2 + (xd * hgap), level)
 
 
+def vblock(buf, width, height, frac=1, gravity='top'):
+    num_rows = min(height, round(frac * height))
+    start = 0 if gravity == 'top' else height - num_rows
+    for r in range(start, start + num_rows):
+        off = r * width
+        for c in range(off, off + width):
+            buf[c] = 255
+
+
+def hblock(buf, width, height, frac=1, gravity='left'):
+    num_cols = min(width, round(frac * width))
+    start = 0 if gravity == 'left' else width - num_cols
+    for r in range(height):
+        off = r * width + start
+        for c in range(off, off + num_cols):
+            buf[c] = 255
+
+
+def shade(buf, width, height, frac=1/4):
+    rand = bytearray(os.urandom(width * height))
+    cutoff = int(frac * 255)
+
+    for r in range(height):
+        off = width * r
+        for c in range(width):
+            q = off + c
+            if rand[q] < cutoff:
+                buf[q] = 255
+
+
+def quad(buf, width, height, x=0, y=0):
+    num_cols = width // 2
+    left = x * num_cols
+    right = width if x else num_cols
+    num_rows = height // 2
+    top = y * num_rows
+    bottom = height if y else num_rows
+    for r in range(top, bottom):
+        off = r * width
+        for c in range(left, right):
+            buf[off + c] = 255
+
+
 box_chars = {
     '─': [hline],
     '━': [p(hline, level=3)],
@@ -308,6 +359,38 @@ box_chars = {
     '╣': [p(inner_corner, which='tl'), p(inner_corner, which='bl'), p(dvline, only='right')],
     '╦': [p(inner_corner, which='bl'), p(inner_corner, which='br'), p(dhline, only='top')],
     '╩': [p(inner_corner, which='tl'), p(inner_corner, which='tr'), p(dhline, only='bottom')],
+    '▀': [p(vblock, frac=1/2)],
+    '▁': [p(vblock, frac=1/8, gravity='bottom')],
+    '▂': [p(vblock, frac=1/4, gravity='bottom')],
+    '▃': [p(vblock, frac=3/8, gravity='bottom')],
+    '▄': [p(vblock, frac=1/2, gravity='bottom')],
+    '▅': [p(vblock, frac=5/8, gravity='bottom')],
+    '▆': [p(vblock, frac=3/4, gravity='bottom')],
+    '▇': [p(vblock, frac=7/8, gravity='bottom')],
+    '█': [p(vblock, frac=1, gravity='bottom')],
+    '▉': [p(hblock, frac=7/8)],
+    '▊': [p(hblock, frac=3/4)],
+    '▋': [p(hblock, frac=5/8)],
+    '▌': [p(hblock, frac=1/2)],
+    '▍': [p(hblock, frac=3/8)],
+    '▎': [p(hblock, frac=1/4)],
+    '▏': [p(hblock, frac=1/8)],
+    '▐': [p(hblock, frac=1/2, gravity='right')],
+    '░': [p(shade, frac=1/4)],
+    '▒': [p(shade, frac=2/4)],
+    '▓': [p(shade, frac=3/4)],
+    '▔': [p(vblock, frac=1/8)],
+    '▕': [p(hblock, frac=1/8, gravity='right')],
+    '▖': [p(quad, y=1)],
+    '▗': [p(quad, x=1, y=1)],
+    '▘': [quad],
+    '▙': [quad, p(quad, y=1), p(quad, x=1, y=1)],
+    '▚': [quad, p(quad, x=1, y=1)],
+    '▛': [quad, p(quad, x=1), p(quad, y=1)],
+    '▜': [quad, p(quad, x=1, y=1), p(quad, x=1)],
+    '▝': [p(quad, x=1)],
+    '▞': [p(quad, x=1), p(quad, y=1)],
+    '▟': [p(quad, x=1), p(quad, y=1), p(quad, x=1, y=1)],
 }
 
 t, f = 1, 3
@@ -336,8 +419,6 @@ for chars, func in (('╒╕╘╛', dvcorner), ('╓╖╙╜', dhcorner), ('
     for ch in chars:
         box_chars[ch] = [p(func, which=ch)]
 
-is_renderable_box_char = box_chars.__contains__
-
 
 def render_box_char(ch, buf, width, height):
     for func in box_chars[ch]:
@@ -354,34 +435,41 @@ def render_missing_glyph(buf, width, height):
     draw_vline(buf, width, vgap, height - vgap + 1, width - hgap, 0)
 
 
-def join_rows(width, height, rows):
-    import ctypes
-    ans = (ctypes.c_ubyte * (width * height * len(rows)))()
-    pos = ctypes.addressof(ans)
-    row_sz = width * height
-    for row in rows:
-        ctypes.memmove(pos, ctypes.addressof(row), row_sz)
-        pos += row_sz
-    return ans
-
-
 def test_drawing(sz=32, family='monospace'):
-    from .render import join_cells, display_bitmap, render_cell, set_font_family
-    from kitty.config import defaults
-    opts = defaults._replace(font_family=family, font_size=sz)
-    width, height = set_font_family(opts)
+    from .render import display_bitmap, setup_for_testing
+    from kitty.fast_data_types import concat_cells, set_send_sprite_to_gpu
+
+    width, height = setup_for_testing(family, sz)[1:]
+    space = bytearray(width * height)
+
+    def join_cells(cells):
+        cells = tuple(bytes(x) for x in cells)
+        return concat_cells(width, height, cells)
+
+    def render_chr(ch):
+        if ch in box_chars:
+            cell = bytearray(len(space))
+            render_box_char(ch, cell, width, height)
+            return cell
+        return space
+
     pos = 0x2500
     rows = []
-    space = render_cell()[0]
-    space_row = join_cells(width, height, *repeat(space, 32))
+    space_row = join_cells(repeat(space, 32))
 
-    for r in range(8):
-        row = []
-        for i in range(16):
-            row.append(render_cell(chr(pos))[0]), row.append(space)
-            pos += 1
-        rows.append(join_cells(width, height, *row))
-        rows.append(space_row)
-    width *= 32
-    im = join_rows(width, height, rows)
-    display_bitmap(im, width, height * len(rows))
+    try:
+        for r in range(10):
+            row = []
+            for i in range(16):
+                row.append(render_chr(chr(pos)))
+                row.append(space)
+                pos += 1
+            rows.append(join_cells(row))
+            rows.append(space_row)
+        rgb_data = b''.join(rows)
+        width *= 32
+        height *= len(rows)
+        assert len(rgb_data) == width * height * 3, '{} != {}'.format(len(rgb_data), width * height * 3)
+        display_bitmap(rgb_data, width, height)
+    finally:
+        set_send_sprite_to_gpu(None)

kitty/fonts/render.py

@@ -201,18 +201,22 @@ def shape_string(text="abcd", family='monospace', size=11.0, dpi=96.0, path=None
         set_send_sprite_to_gpu(None)
 
 
-def test_render_string(text='Hello, world!', family='monospace', size=144.0, dpi=96.0):
+def display_bitmap(rgb_data, width, height):
     from tempfile import NamedTemporaryFile
-    from kitty.fast_data_types import concat_cells, current_fonts
     from kitty.icat import detect_support, show
-    if not hasattr(test_render_string, 'detected') and not detect_support():
+    if not hasattr(display_bitmap, 'detected') and not detect_support():
         raise SystemExit('Your terminal does not support the graphics protocol')
-    test_render_string.detected = True
+    display_bitmap.detected = True
+    with NamedTemporaryFile(delete=False) as f:
+        f.write(rgb_data)
+    show(f.name, width, height, 24)
+
+
+def test_render_string(text='Hello, world!', family='monospace', size=144.0, dpi=96.0):
+    from kitty.fast_data_types import concat_cells, current_fonts
 
     cell_width, cell_height, cells = render_string(text, family, size, dpi)
     rgb_data = concat_cells(cell_width, cell_height, tuple(cells))
-    with NamedTemporaryFile(delete=False) as f:
-        f.write(rgb_data)
     cf = current_fonts()
     fonts = [cf['medium'].display_name()]
     fonts.extend(f.display_name() for f in cf['fallback'])
@@ -221,7 +225,7 @@ def test_render_string(text='Hello, world!', family='monospace', size=144.0, dpi
         print(msg)
     except UnicodeEncodeError:
         sys.stdout.buffer.write(msg.encode('utf-8') + b'\n')
-    show(f.name, cell_width * len(cells), cell_height, 24)
+    display_bitmap(rgb_data, cell_width * len(cells), cell_height)
     print('\n')
 
 

kitty/freetype.c

@@ -130,7 +130,8 @@ set_font_size(Face *self, FT_F26Dot6 char_width, FT_F26Dot6 char_height, FT_UInt
 bool
 set_size_for_face(PyObject *s, unsigned int desired_height, bool force) {
     Face *self = (Face*)s;
-    FT_UInt w = (FT_UInt)(ceil(global_state.font_sz_in_pts * 64.0)), xdpi = (FT_UInt)global_state.logical_dpi_x, ydpi = (FT_UInt)global_state.logical_dpi_y;
+    FT_F26Dot6 w = (FT_F26Dot6)(ceil(global_state.font_sz_in_pts * 64.0));
+    FT_UInt xdpi = (FT_UInt)global_state.logical_dpi_x, ydpi = (FT_UInt)global_state.logical_dpi_y;
     if (!force && (self->char_width == w && self->char_height == w && self->xdpi == xdpi && self->ydpi == ydpi)) return true;
     ((Face*)self)->size_in_pts = global_state.font_sz_in_pts;
     return set_font_size(self, w, w, xdpi, ydpi, desired_height);

kitty/keys.h

@@ -569,9 +569,9 @@ key_lookup(uint8_t key, KeyboardMode mode, uint8_t mods, uint8_t action) {
                   case 57: // LEFT
                     return "\x06\x1b\x5b\x31\x3b\x32\x44";
                   case 58: // DOWN
-                    return "\x03\x1b\x5b\x42";
+                    return "\x06\x1b\x5b\x31\x3b\x32\x42";
                   case 59: // UP
-                    return "\x03\x1b\x5b\x41";
+                    return "\x06\x1b\x5b\x31\x3b\x32\x41";
                   case 60: // PAGE_UP
                     return "\x04\x1b\x5b\x35\x7e";
                   case 61: // PAGE_DOWN
@@ -1767,9 +1767,9 @@ key_lookup(uint8_t key, KeyboardMode mode, uint8_t mods, uint8_t action) {
                   case 57: // LEFT
                     return "\x06\x1b\x5b\x31\x3b\x32\x44";
                   case 58: // DOWN
-                    return "\x03\x1b\x5b\x42";
+                    return "\x06\x1b\x5b\x31\x3b\x32\x42";
                   case 59: // UP
-                    return "\x03\x1b\x5b\x41";
+                    return "\x06\x1b\x5b\x31\x3b\x32\x41";
                   case 60: // PAGE_UP
                     return "\x04\x1b\x5b\x35\x7e";
                   case 61: // PAGE_DOWN
@@ -2973,9 +2973,9 @@ key_lookup(uint8_t key, KeyboardMode mode, uint8_t mods, uint8_t action) {
                     case 57: // LEFT
                       return "\x06\x1b\x5b\x31\x3b\x32\x44";
                     case 58: // DOWN
-                      return "\x03\x1b\x4f\x42";
+                      return "\x06\x1b\x5b\x31\x3b\x32\x42";
                     case 59: // UP
-                      return "\x03\x1b\x4f\x41";
+                      return "\x06\x1b\x5b\x31\x3b\x32\x41";
                     case 60: // PAGE_UP
                       return "\x04\x1b\x5b\x35\x7e";
                     case 61: // PAGE_DOWN
@@ -4171,9 +4171,9 @@ key_lookup(uint8_t key, KeyboardMode mode, uint8_t mods, uint8_t action) {
                     case 57: // LEFT
                       return "\x06\x1b\x5b\x31\x3b\x32\x44";
                     case 58: // DOWN
-                      return "\x03\x1b\x4f\x42";
+                      return "\x06\x1b\x5b\x31\x3b\x32\x42";
                     case 59: // UP
-                      return "\x03\x1b\x4f\x41";
+                      return "\x06\x1b\x5b\x31\x3b\x32\x41";
                     case 60: // PAGE_UP
                       return "\x04\x1b\x5b\x35\x7e";
                     case 61: // PAGE_DOWN

kitty/keys.py

@@ -79,6 +79,8 @@ SHIFTED_KEYS = {
     defines.GLFW_KEY_END: key_as_bytes('kEND'),
     defines.GLFW_KEY_LEFT: key_as_bytes('kLFT'),
     defines.GLFW_KEY_RIGHT: key_as_bytes('kRIT'),
+    defines.GLFW_KEY_UP: key_as_bytes('kri'),
+    defines.GLFW_KEY_DOWN: key_as_bytes('kind'),
 }
 
 control_codes.update({
@@ -225,13 +227,6 @@ def get_shortcut(keymap, mods, key, scancode):
     return keymap.get((mods & 0b1111, key))
 
 
-def get_sent_data(send_text_map, key, scancode, mods, window, action):
-    if action in (defines.GLFW_PRESS, defines.GLFW_REPEAT):
-        m = keyboard_mode_name(window.screen)
-        keymap = send_text_map[m]
-        return keymap.get((mods & 0b1111, key))
-
-
 def generate_key_table():
     # To run this, use: python3 . -c "from kitty.keys import *; generate_key_table()"
     import os

kitty/kitty.conf

@@ -31,6 +31,12 @@ font_size_delta 2
 # 100% to reduce line height (but this might cause rendering artifacts).
 adjust_line_height 0
 
+# Change the sizes of the lines used for the box drawing unicode characters
+# These values are in pts. They will be scaled by the monitor DPI to arrive at 
+# a pixel value. There must be four values corresponding to thin, normal, thick,
+# and very thick lines;
+box_drawing_scale 0.001, 1, 1.5, 2
+
 # The foreground color
 foreground       #dddddd
 
@@ -298,8 +304,6 @@ map ctrl+shift+f11      toggle_fullscreen
 # to the start of the line (same as pressing the Home key):
 # map ctrl+alt+a send_text normal Word\x1b[H
 # map ctrl+alt+a send_text application Word\x1bOH
-# There is also a legacy syntax for send_text, which looks like:
-# send_text all ctrl+alt+a some text
 
 # Symbol mapping (special font for specified unicode code points). Map the
 # specified unicode codepoints to a particular font. Useful if you need special

kitty/line-buf.c

@@ -268,7 +268,7 @@ linebuf_index(LineBuf* self, index_type top, index_type bottom) {
 }
 
 static PyObject*
-index(LineBuf *self, PyObject *args) {
+pyw_index(LineBuf *self, PyObject *args) {
 #define index_doc "index(top, bottom) -> Scroll all lines in the range [top, bottom] by one upwards. After scrolling, bottom will be top."
     unsigned int top, bottom;
     if (!PyArg_ParseTuple(args, "II", &top, &bottom)) return NULL;
@@ -435,7 +435,7 @@ static PyMethodDef methods[] = {
     METHOD(set_attribute, METH_VARARGS)
     METHOD(set_continued, METH_VARARGS)
     METHOD(dirty_lines, METH_NOARGS)
-    METHOD(index, METH_VARARGS)
+    {"index", (PyCFunction)pyw_index, METH_VARARGS, NULL},
     METHOD(reverse_index, METH_VARARGS)
     METHOD(insert_lines, METH_VARARGS)
     METHOD(delete_lines, METH_VARARGS)

kitty/line.c

@@ -161,7 +161,7 @@ url_end_at(Line *self, PyObject *x) {
 static PyObject*
 text_at(Line* self, Py_ssize_t xval) {
 #define text_at_doc "[x] -> Return the text in the specified cell"
-    if (xval >= self->xnum) { PyErr_SetString(PyExc_IndexError, "Column number out of bounds"); return NULL; }
+    if ((unsigned)xval >= self->xnum) { PyErr_SetString(PyExc_IndexError, "Column number out of bounds"); return NULL; }
     return line_text_at(self->cells[xval].ch, self->cells[xval].cc);
 }
 

kitty/main.py

@@ -26,6 +26,7 @@ from .fast_data_types import (
     glfw_init, glfw_init_hint_string, glfw_swap_interval, glfw_terminate,
     glfw_window_hint, install_sigchld_handler, set_logical_dpi, set_options
 )
+from .fonts.box_drawing import set_scale
 from .layout import all_layouts
 from .utils import (
     color_as_int, detach, end_startup_notification, get_logical_dpi,
@@ -170,6 +171,7 @@ def initialize_window(window, opts, debug_gl=False):
 def run_app(opts, args):
     set_options(opts)
     setup_opengl(opts)
+    set_scale(opts.box_drawing_scale)
     load_cached_values()
     if 'window-size' in cached_values and opts.remember_window_size:
         ws = cached_values['window-size']

kitty/parser.c

@@ -13,13 +13,13 @@
 extern PyTypeObject Screen_Type;
 
 // utils {{{
-static unsigned long pow10[] = {
+static uint64_t pow10[] = {
     1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000
 };
 
-static inline unsigned long
+static inline uint64_t
 utoi(uint32_t *buf, unsigned int sz) {
-    unsigned long ans = 0;
+    uint64_t ans = 0;
     uint32_t *p = buf;
     // Ignore leading zeros
     while(sz > 0) {
@@ -27,7 +27,7 @@ utoi(uint32_t *buf, unsigned int sz) {
         else break;
     }
     if (sz < sizeof(pow10)/sizeof(pow10[0])) {
-        for (int i = sz-1, j=0; i >=0; i--, j++) {
+        for (int i = sz-1, j=0; i >= 0; i--, j++) {
             ans += (p[i] - '0') * pow10[j];
         }
     }
@@ -1053,7 +1053,7 @@ extern uint32_t *latin1_charset;
 static inline void 
 _parse_bytes(Screen *screen, uint8_t *buf, Py_ssize_t len, PyObject DUMP_UNUSED *dump_callback) {
     uint32_t prev = screen->utf8_state;
-    for (unsigned int i = 0; i < len; i++) {
+    for (unsigned int i = 0; i < (unsigned int)len; i++) {
         if (screen->use_latin1) dispatch_unicode_char(screen, latin1_charset[buf[i]], dump_callback);
         else {
             switch (decode_utf8(&screen->utf8_state, &screen->utf8_codepoint, buf[i])) {

kitty/screen.c

@@ -436,7 +436,8 @@ screen_handle_graphics_command(Screen *self, const GraphicsCommand *cmd, const u
     if (response != NULL) write_to_child(self, response, strlen(response));
     if (x != self->cursor->x || y != self->cursor->y) {
         if (self->cursor->x >= self->columns) { self->cursor->x = 0; self->cursor->y++; }
-        if (self->cursor->y > self->margin_bottom) { screen_scroll(self, self->cursor->y - self->margin_bottom); }
+        if (self->cursor->y > self->margin_bottom) screen_scroll(self, self->cursor->y - self->margin_bottom); 
+        screen_ensure_bounds(self, false);
     }
 }
 // }}}
@@ -701,7 +702,6 @@ screen_index(Screen *self) {
 void 
 screen_scroll(Screen *self, unsigned int count) {
     // Scroll the screen up by count lines, not moving the cursor
-    count = MIN(self->lines, count);
     unsigned int top = self->margin_top, bottom = self->margin_bottom;
     while (count > 0) {
         count--;

kitty/state.c

@@ -170,16 +170,10 @@ PYWRAP1(set_options) {
         OPT(select_by_word_characters)[i] = PyUnicode_READ(PyUnicode_KIND(chars), PyUnicode_DATA(chars), i);
     }
     OPT(select_by_word_characters_count) = PyUnicode_GET_LENGTH(chars);
+    Py_DECREF(chars);
 
     GA(keymap); set_special_keys(ret);
     Py_DECREF(ret); if (PyErr_Occurred()) return NULL;
-    GA(send_text_map);
-    dict_iter(ret) {
-        set_special_keys(value);
-    }}
-    Py_DECREF(ret); if (PyErr_Occurred()) return NULL;
-
-    Py_DECREF(chars);
 
     PyObject *al = PyObject_GetAttrString(args, "adjust_line_height");
     if (PyFloat_Check(al)) { 

kitty/terminfo.py

@@ -190,6 +190,8 @@ string_capabilities = {
     'kpp': r'\E[5~',
     # Scroll backwards (reverse index)
     'kri': r'\E[1;2A',
+    # scroll forwards (index)
+    'kind': r'\E[1;2B',
     # Restore cursor
     'rc': r'\E8',
     # Reverse video
@@ -276,8 +278,6 @@ string_capabilities = {
     # 'is2': r'\E[!p\E[?3;4l\E[4l\E>',
     # # Enter/send key
     # 'kent': r'\EOM',
-    # # scroll forwards
-    # 'kind': r'\E[1;2B',
     # # reset2
     # 'rs2': r'\E[!p\E[?3;4l\E[4l\E>',
 }
@@ -350,6 +350,7 @@ termcap_aliases.update({
     'kN': 'knp',
     'kP': 'kpp',
     'kR': 'kri',
+    'kF': 'kind',
     'rc': 'rc',
     'mr': 'rev',
     'sr': 'ri',
@@ -400,7 +401,6 @@ termcap_aliases.update({
     # 'mk': 'invis',
     # 'is': 'is2',
     # '@8': 'kent',
-    # 'kF': 'kind',
     # 'r2': 'rs2',
 })
 

terminfo/kitty.terminfo

@@ -85,6 +85,7 @@ xterm-kitty|KovIdTTY,
 	khlp=,
 	khome=\EOH,
 	kich1=\E[2~,
+	kind=\E[1;2B,
 	kmous=\E[M,
 	knp=\E[6~,
 	kpp=\E[5~,