Hi

I have installed Ubuntu-9.10 and I see that the Breton keyboard
C'HWERTY is now proposed.  A photo of this keyboard is visible here:

- http://upload.wikimedia.org/wikipedia/commons/9/9e/Bretona-klavaro.jpg

(notice the C'H key in the upper left part, under the keys 1 nd 2 and the CH key)

Unfortunately, the config file for this keyboard do not properly work without patching a few files as described below (1) (2) (3):

1) Support of the caps lock key for keys C´H and CH requires patching files /usr/share/X11/xkb/symbols/fr and /usr/share/X11/xkb/types/extra as follows:

      pel@pel-laptop:~$ diff -c /usr/share/X11/xkb/symbols/fr.orig /usr/share/X11/xkb/symbols/fr
      *** /usr/share/X11/xkb/symbols/fr.orig	2009-11-29 14:04:18.372308169 +0100
      --- /usr/share/X11/xkb/symbols/fr	2009-11-29 15:00:22.293311210 +0100
      ***************
      *** 723,730 ****
            // Second row
            // Handling the C'H key correctly requires an inputmethod (XIM)
            // See https://bugs.freedesktop.org/show_bug.cgi?id=19506
      !  // key <AD01> { [    trigraph_c_h,   trigraph_C_h,    trigraph_C_H,    Greek_alpha ] };
      !     key <AD01> { [           UF8FD,          UF8FE,           UF8FF,    Greek_alpha ] };
            key <AD02> { [               w,              W,     Greek_omega,    Greek_omega ] };
            key <AD03> { [               e,              E,        EuroSign,  Greek_epsilon ] };
            key <AD04> { [               r,              R,       Greek_rho,      Greek_rho ] };
      --- 723,732 ----
            // Second row
            // Handling the C'H key correctly requires an inputmethod (XIM)
            // See https://bugs.freedesktop.org/show_bug.cgi?id=19506
      !  // key <AD01> { type[group1] = "FOUR_LEVEL_C_HWERTY", 
      !  //              [    trigraph_c_h,   trigraph_C_h,    trigraph_C_H,    Greek_alpha ] };
      !     key <AD01> { type[group1] = "FOUR_LEVEL_C_HWERTY", 
      !                  [           UF8FD,          UF8FE,           UF8FF,    Greek_alpha ] };
            key <AD02> { [               w,              W,     Greek_omega,    Greek_omega ] };
            key <AD03> { [               e,              E,        EuroSign,  Greek_epsilon ] };
            key <AD04> { [               r,              R,       Greek_rho,      Greek_rho ] };
      ***************
      *** 761,768 ****
            key <AB06> { [               n,              N,        Greek_nu,       Greek_nu ] };
            // Handling the CH key correctly requires an inputmethod (XIM)
            // See https://bugs.freedesktop.org/show_bug.cgi?id=19506
      !  // key <AB07> { [      digraph_ch,     digraph_Ch,      digraph_CH,  Greek_omicron ] };
      !     key <AB07> { [           UF8FA,          UF8FB,           UF8FC,  Greek_omicron ] };
            key <AB08> { [          ntilde,         Ntilde                                  ] };
            key <AB09> { [          period,          colon,         section,      copyright ] };
            key <AB10> { [           comma,      semicolon,         percent                 ] };
      --- 763,772 ----
            key <AB06> { [               n,              N,        Greek_nu,       Greek_nu ] };
            // Handling the CH key correctly requires an inputmethod (XIM)
            // See https://bugs.freedesktop.org/show_bug.cgi?id=19506
      !  // key <AB07> { type[group1] = "FOUR_LEVEL_C_HWERTY", 
      !  //              [      digraph_ch,     digraph_Ch,       digraph_CH, Greek_omicron ] };
      !     key <AB07> { type[group1] = "FOUR_LEVEL_C_HWERTY", 
      !                  [           UF8FA,          UF8FB,            UF8FC, Greek_omicron ] };
            key <AB08> { [          ntilde,         Ntilde                                  ] };
            key <AB09> { [          period,          colon,         section,      copyright ] };
            key <AB10> { [           comma,      semicolon,         percent                 ] };

      pel@pel-laptop:~$ diff -c /usr/share/X11/xkb/types/extra.orig /usr/share/X11/xkb/types/extra
      *** /usr/share/X11/xkb/types/extra.orig	2009-11-29 14:23:11.416291776 +0100
      --- /usr/share/X11/xkb/types/extra	2009-11-29 14:42:02.116291991 +0100
      ***************
      *** 139,144 ****
      --- 139,165 ----
                level_name[Level4] = "Shift Alt";
                level_name[Level5] = "Lock";
            };
      + 
      + // Type for Breton keyboard C'HWERTY.
      + // It makes it possible to type the C'H C'h c'h trigraphs
      + // and CH Ch ch digraphs present on the keyboard.
      + // When typing capsLock, this key type is needed to
      + // output C'H and CH.
      +     type "FOUR_LEVEL_C_HWERTY" {
      +         modifiers = Shift+Lock+LevelThree;
      +         map[None] = Level1;
      +         map[Shift] = Level2;
      +         map[LevelThree] = Level3;
      +         map[Shift+LevelThree] = Level4;
      +         map[Lock]  = Level3;
      +         map[Lock+Shift] = Level1;
      +         map[Lock+LevelThree] = Level2;
      +         map[Lock+Shift+LevelThree] = Level4;
      +         level_name[Level1] = "Base";
      +         level_name[Level2] = "Shift";
      +         level_name[Level3] = "Alt Base";
      +         level_name[Level4] = "Shift Alt";
      +     };
        };
        
        // This enables the four level shifting also for the keypad.



2) Keysyms of trigraph C´H and digraph CH have not yet been added in X11. So until this is done in X11, supporting the Breton C'HWERTY keyboard requires private-use keysyms which can be done by adding a file ~/.XCompose:

      pel@pel-laptop:~$ cat ~/.XCompose
      #
      # Breton trigraph & digraphs
      # Dominique Pellé <dominique.pelle@gmail.com>
      #
      #<digraph_ch> : "ch"
      #<digraph_Ch> : "Ch"
      #<digraph_CH> : "CH"

      #<trigraph_c_h> : "c´h"
      #<trigraph_C_h> : "C´h"
      #<trigraph_C_H> : "C´H"

      <UF8FA> : "ch"
      <UF8FB> : "Ch"
      <UF8FC> : "CH"

      <UF8FD> : "c´h"
      <UF8FE> : "C´h"
      <UF8FF> : "C´H"

Can keysyms digraph_ch, digraph_Ch, digraph_CH, trigraph_C_h, trigraph_C_h, trigraph_C_H be added to x11?


3) Support of the C´H and CH keys requires an input methode (XIM). XIM can be enabled by adding "export GTK_IM_MODULE=xim" in file /etc/environment:

      pel@pel-laptop:~$ diff -c /etc/environment.orig /etc/environment
      *** /etc/environment.orig	2009-11-29 15:07:34.916311751 +0100
      --- /etc/environment	2009-11-29 14:14:08.676291508 +0100
      ***************
      *** 1 ****
      --- 1,2 ----
        PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games"
      + export GTK_IM_MODULE=xim

I realise that this last step (3) is not a bug but I mention it here if anybody wants to be able to make this keyboard work.

After doing all those changes (1) (2) (3), the C'HWERTY keyboard works fine in Ubuntu-9.10. 

See also an old bug report http://bugs.freedesktop.org/show_bug.cgi?id=19506 when Breton keyboard was added.

I describe these 3 steps to fix the Breton C'HWERTY keyboard at:
http://dominiko.livejournal.com/22848.html