Add support for XTVERSION version reporting escape code

docs/changelog.rst

@@ -4,6 +4,11 @@ Changelog
 |kitty| is a feature-rich, cross-platform, *fast*, GPU based terminal.
 To update |kitty|, :doc:`follow the instructions <binary>`.
 
+0.21.2 [future]
+----------------------
+
+- Add support for the XTVERSION escape code
+
 0.21.1 [2021-06-14]
 ----------------------
 

kitty/parser.c

@@ -935,7 +935,14 @@ dispatch_csi(Screen *screen, PyObject DUMP_UNUSED *dump_callback) {
             REPORT_ERROR("Unknown CSI x sequence with start and end modifiers: '%c' '%c'", start_modifier, end_modifier);
             break;
         case DECSCUSR:
-            CALL_CSI_HANDLER1M(screen_set_cursor, 1);
+            if (!start_modifier && end_modifier == ' ') {
+                CALL_CSI_HANDLER1M(screen_set_cursor, 1);
+            }
+            if (start_modifier == '>' && !end_modifier) {
+                CALL_CSI_HANDLER1(screen_xtversion, 0);
+            }
+            REPORT_ERROR("Unknown CSI q sequence with start and end modifiers: '%c' '%c'", start_modifier, end_modifier);
+            break;
         case SU:
             NO_MODIFIERS(end_modifier, ' ', "Select presentation directions escape code not implemented");
             CALL_CSI_HANDLER1(screen_scroll, 1);

kitty/screen.c

@@ -1527,6 +1527,13 @@ report_device_attributes(Screen *self, unsigned int mode, char start_modifier) {
     }
 }
 
+void
+screen_xtversion(Screen *self, unsigned int mode) {
+    if (mode == 0) {
+        write_escape_code_to_child(self, DCS, ">|kitty(" XT_VERSION ")");
+    }
+}
+
 void
 screen_report_size(Screen *self, unsigned int which) {
     char buf[32] = {0};

kitty/screen.h

@@ -166,6 +166,7 @@ void screen_clear_tab_stop(Screen *self, unsigned int how);
 void screen_set_mode(Screen *self, unsigned int mode);
 void screen_reset_mode(Screen *self, unsigned int mode);
 void screen_decsace(Screen *self, unsigned int);
+void screen_xtversion(Screen *self, unsigned int);
 void screen_insert_characters(Screen *self, unsigned int count);
 void screen_cursor_up(Screen *self, unsigned int count/*=1*/, bool do_carriage_return/*=false*/, int move_direction/*=-1*/);
 void screen_set_cursor(Screen *self, unsigned int mode, uint8_t secondary);

setup.py

@@ -374,6 +374,7 @@ def kitty_env() -> Env:
     cppflags = ans.cppflags
     cppflags.append('-DPRIMARY_VERSION={}'.format(version[0] + 4000))
     cppflags.append('-DSECONDARY_VERSION={}'.format(version[1]))
+    cppflags.append('-DXT_VERSION="{}"'.format('.'.join(map(str, version))))
     at_least_version('harfbuzz', 1, 5)
     cflags.extend(pkg_config('libpng', '--cflags-only-I'))
     cflags.extend(pkg_config('lcms2', '--cflags-only-I'))