Add support for ctrl+Fn keys under rxvt

CHANGELOG.md

@@ -21,6 +21,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Widgets can now have an ALLOW_CHILDREN (bool) classvar to disallow adding children to a widget https://github.com/Textualize/textual/pull/3758
 - Added the ability to set the `label` property of a `Checkbox` https://github.com/Textualize/textual/pull/3765
 - Added the ability to set the `label` property of a `RadioButton` https://github.com/Textualize/textual/pull/3765
+- Added support for Ctrl+Fn and Ctrl+Shift+Fn keys in urxvt https://github.com/Textualize/textual/pull/3737
+- Added support for various modified edit and navigation keys in urxvt https://github.com/Textualize/textual/pull/3739
 
 ### Changed
 

src/textual/_ansi_sequences.py

@@ -140,6 +140,30 @@
     "\x1b[21;6~": (Keys.ControlF22,),
     "\x1b[23;6~": (Keys.ControlF23,),
     "\x1b[24;6~": (Keys.ControlF24,),
+    # rxvt-unicode control function keys:
+    "\x1b[11^": (Keys.ControlF1,),
+    "\x1b[12^": (Keys.ControlF2,),
+    "\x1b[13^": (Keys.ControlF3,),
+    "\x1b[14^": (Keys.ControlF4,),
+    "\x1b[15^": (Keys.ControlF5,),
+    "\x1b[17^": (Keys.ControlF6,),
+    "\x1b[18^": (Keys.ControlF7,),
+    "\x1b[19^": (Keys.ControlF8,),
+    "\x1b[20^": (Keys.ControlF9,),
+    "\x1b[21^": (Keys.ControlF10,),
+    "\x1b[23^": (Keys.ControlF11,),
+    "\x1b[24^": (Keys.ControlF12,),
+    # rxvt-unicode control+shift function keys:
+    "\x1b[25^": (Keys.ControlF13,),
+    "\x1b[26^": (Keys.ControlF14,),
+    "\x1b[28^": (Keys.ControlF15,),
+    "\x1b[29^": (Keys.ControlF16,),
+    "\x1b[31^": (Keys.ControlF17,),
+    "\x1b[32^": (Keys.ControlF18,),
+    "\x1b[33^": (Keys.ControlF19,),
+    "\x1b[34^": (Keys.ControlF20,),
+    "\x1b[23@": (Keys.ControlF21,),
+    "\x1b[24@": (Keys.ControlF22,),
     # --
     # Tmux (Win32 subsystem) sends the following scroll events.
     "\x1b[62~": (Keys.ScrollUp,),