ctrl revision 0412cded 
1// eliminate the caps lock key completely (replace with control)
2partial modifier_keys 
3xkb_symbols "nocaps" {
4    replace key <CAPS>	{  [ Control_L, Control_L ] };
5    modifier_map  Control { <CAPS>, <LCTL> };
6};
7
8// replace left control with Meta
9xkb_symbols "lctrl_meta" {
10    replace key <LCTL>	{  [ Meta_L ] };
11};
12
13// swap the caps lock key with the left control key
14partial modifier_keys 
15xkb_symbols "swapcaps" {
16    replace key <CAPS>	{  [ Control_L ] };
17    replace key <LCTL>	{  [ Caps_Lock ] };
18};
19
20// moves the control key to the middle row and the caps lock
21// to the bottom row.  Only works if the geometry or keycodes
22// file has defined appropriate aliases for the keys in question.
23partial modifier_keys 
24xkb_symbols "ac_ctrl" {
25    replace key <AC00>	{  [ Control_L ] };
26    replace key <AA00>	{  [ Caps_Lock ] };
27};
28
29// Moves the control key to the bottom row and the caps lock
30// to the middle row.  Only works if the geometry or keycodes
31// file has defined appropriate aliases for the keys in question.
32partial modifier_keys 
33xkb_symbols "aa_ctrl" {
34    replace key <AA00>	{  [ Control_L ] };
35    replace key <AC00>	{  [ Caps_Lock ] };
36};
37
38// Right Ctrl works as Right Alt
39partial modifier_keys 
40xkb_symbols "rctrl_ralt" {
41    key <RCTL>	{  symbols[Group1]= [ Alt_R ] };
42};
43
44// Menu works as Right Ctrl
45partial modifier_keys
46xkb_symbols "menu_rctrl" {
47  replace key <MENU> { [ Control_R, Control_R ] };
48  modifier_map Control { Control_L, <MENU> };
49};
50
51// right alt functions as another ctrl key
52partial modifier_keys 
53xkb_symbols "ralt_rctrl" {
54    replace key <RALT> { type[Group1]    = "TWO_LEVEL",
55                         symbols[Group1] = [ Control_R, Control_R ] };
56    modifier_map Control { <RALT> }; 
57};
58