From 287bd2e76b34de7af8b8197e5253ed942c72a1fb Mon Sep 17 00:00:00 2001
From: Stephan Hilb <stephan@ecshi.net>
Date: Sat, 19 Feb 2011 14:06:28 +0100
Subject: [PATCH] Add option to bind Control modifier to <CAPS> key while preserving the keysym

Allows the <CAPS> key to act as a Control modifier while still being recognized as the caps lock key through its keysym (CapsLock).
See #30898 for usecases and arguments.
---
 rules/base.o_s.part |    1 +
 symbols/capslock    |    9 +++++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/rules/base.o_s.part b/rules/base.o_s.part
index 285a701..3e23396 100644
--- a/rules/base.o_s.part
+++ b/rules/base.o_s.part
@@ -60,6 +60,7 @@
   caps:super		=	+capslock(super)
   caps:hyper		=	+capslock(hyper)
   caps:none		=	+capslock(none)
+  caps:ctrl_modifier	=	+capslock(ctrl_modifier)
   ctrl:nocaps		=	+ctrl(nocaps)
   ctrl:lctrl_meta	=	+ctrl(lctrl_meta)
   ctrl:swapcaps		=	+ctrl(swapcaps)
diff --git a/symbols/capslock b/symbols/capslock
index 415e4db..2b7e53b 100644
--- a/symbols/capslock
+++ b/symbols/capslock
@@ -63,3 +63,12 @@ xkb_symbols "numlock" {
     key <CAPS> {        [       Num_Lock  ]       };
 };
 
+// This just changes the modifier behavior of the <CAPS> key.
+// The keysym will be preserved (in most cases Caps_Lock)
+partial modifier_keys xkb_symbols "ctrl_modifier" {
+    replace key <CAPS> {
+        type[Group1] = "ONE_LEVEL",
+        actions[Group1] = [ SetMods(modifiers=Control) ]    
+    };
+    modifier_map Control { <CAPS> };
+};
-- 
1.7.1