Silence the errors about OSC 7

Up to now this poorly designed and completely unnecessary escape code
was relegated to only GNOME, however, off late Apple has started using
it as well, so silently ignore it, instead of spamming error messages
for it.

kitty/client.py

@@ -207,14 +207,15 @@ def write_osc(code: int, string: str = '') -> None:
     write(OSC + str(code) + string + '\x07')
 
 
-set_dynamic_color = set_color_table_color = write_osc
+set_dynamic_color = set_color_table_color = process_cwd_notification = write_osc
 
 
 def replay(raw: str) -> None:
+    specials = {'draw', 'set_title', 'set_icon', 'set_dynamic_color', 'set_color_table_color', 'process_cwd_notification'}
     for line in raw.splitlines():
         if line.strip() and not line.startswith('#'):
             cmd, rest = line.partition(' ')[::2]
-            if cmd in {'draw', 'set_title', 'set_icon', 'set_dynamic_color', 'set_color_table_color'}:
+            if cmd in specials:
                 globals()[cmd](rest)
             else:
                 r = map(int, rest.split()) if rest else ()

kitty/parser.c

@@ -392,6 +392,10 @@ dispatch_osc(Screen *screen, PyObject DUMP_UNUSED *dump_callback) {
             START_DISPATCH
             DISPATCH_OSC_WITH_CODE(set_color_table_color);
             END_DISPATCH
+        case 7:
+            START_DISPATCH
+            DISPATCH_OSC_WITH_CODE(process_cwd_notification);
+            END_DISPATCH
         case 8:
             dispatch_hyperlink(screen, i, limit-i, dump_callback);
             break;

kitty/screen.c

@@ -1630,6 +1630,13 @@ set_color_table_color(Screen *self, unsigned int code, PyObject *color) {
     else { CALLBACK("set_color_table_color", "IO", code, color); }
 }
 
+void
+process_cwd_notification(Screen *self, unsigned int code, PyObject *cwd) {
+    (void)self; (void)code; (void)cwd;
+    // we ignore this as we dont need the stupid OSC 7 cwd reporting protocol,
+    // since, being moderately intelligent, we can get CWD directly.
+}
+
 void
 screen_handle_cmd(Screen *self, PyObject *cmd) {
     CALLBACK("handle_remote_cmd", "O", cmd);

kitty/screen.h

@@ -193,6 +193,7 @@ void set_icon(Screen *self, PyObject*);
 void set_dynamic_color(Screen *self, unsigned int code, PyObject*);
 void clipboard_control(Screen *self, PyObject*);
 void set_color_table_color(Screen *self, unsigned int code, PyObject*);
+void process_cwd_notification(Screen *self, unsigned int code, PyObject*);
 uint32_t* translation_table(uint32_t which);
 void screen_request_capabilities(Screen *, char, PyObject *);
 void screen_set_8bit_controls(Screen *, bool);