Dear Ilya, dear all,

thanks again for your answers.

Without knowing if this is the good direction, I have tested to change ~/.XCompose by typing first the diacritic and then the "diacriticised" letter, but it does not make differences in LibreOffice and in Firefox. Note that when I type AltGr+& in Firefox, it remains an ampersand whereas in LibreOffice it appears as nothing and does not react.


With <i_breve_below> : "i̯", in ~/.XCompose, xev:

KeyPress event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 43917, (-441,-13), root:(110,255),
state 0x4080, keycode 10 (keysym 0x100050f5, i_breve_below), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: True

KeyPress event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 43917, (-441,-13), root:(110,255),
    state 0x4080, keycode 0 (keysym 0x0, NoSymbol), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 3 bytes: (69 cc af) "i̯"
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 44049, (-441,-13), root:(110,255),
state 0x4080, keycode 10 (keysym 0x100050f5, i_breve_below), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False



With <i_breve_below> : "̯i" in ~/.XCompose, xev:

KeyPress event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 1688270, (728,366), root:(1279,634),
state 0x4080, keycode 10 (keysym 0x100050f5, i_breve_below), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: True

KeyPress event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 1688270, (728,366), root:(1279,634),
    state 0x4080, keycode 0 (keysym 0x0, NoSymbol), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 3 bytes: (cc af 69) "̯i"
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x4000001,
    root 0x168, subw 0x0, time 1688400, (728,366), root:(1279,634),
state 0x4080, keycode 10 (keysym 0x100050f5, i_breve_below), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False


The big difference in xev seems to be these lines:

XmbLookupString gives 3 bytes: (69 cc af) "i̯"
XmbLookupString gives 3 bytes: (cc af 69) "̯i"

Thanks again and sorry for all these messages.

Best,

Pierre-Luc

Le 13/03/2019 à 19:32, Ilya Anfimov a écrit :
On Wed, Mar 13, 2019 at 03:20:00PM +0100, Pierre-Luc Angles wrote:


now I have tried once again in my keyboard layout

key <AE01>    { [        ampersand,                1,
  i_breve_below,                   U032F ] };

Typing it in a LibreOffice document with the right font results in no
reaction (whereas before it reacts like NoSymbol by putting the default
onesuperior).
  Did  you  restarted  libreoffice completely? I mean, closing any
window and checking that no "quickstart" is hanging in memory?
  XKeysymDB and *Compose are read only once at startup.

Yes, I have rebooted my computer several times and it does not react when I type AltGr+& in LibreOffice.


Running xev I can see now:

KeyPress event, serial 37, synthetic NO, window 0x4c00001,
     root 0x168, subw 0x0, time 2807193, (-519,30), root:(568,309),
     state 0x4090, keycode 0 (keysym 0x0, NoSymbol), same_screen YES,
     XLookupString gives 0 bytes:
     XmbLookupString gives 3 bytes: (69 cc af) "i??"
     XFilterEvent returns: False
  It's probably the second event after that keypress.
  And  this  is  the usual xlib compose path: real keypresses that
are part of composing sequences (or can be such a part)  reported
as  usual,  except  that XFilterEvent returns True, after receiv-
ing a complete sequence (or getting something that is  definitely
not a beginning of a sequence) an event  with the keycode 0 simu-
lated that returns final string via  XmbLookupString.

KeyRelease event, serial 37, synthetic NO, window 0x4c00001,
     root 0x168, subw 0x0, time 2807315, (-519,30), root:(568,309),
     state 0x4090, keycode 10 (keysym 0x100050f5, i_breve_below), same_screen
YES,
     XLookupString gives 0 bytes:
     XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x4c00001,
     root 0x168, subw 0x0, time 2810008, (-519,30), root:(568,309),
     state 0x4090, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), same_screen
YES,
     XKeysymToKeycode returns keycode: 92
     XLookupString gives 0 bytes:
     XFilterEvent returns: False

Note that a working key typed with the ALtGr modifier on the same keyboard
layout has just two paragraphs in xev, for example:
  This  doesn't seems to use Compose. Just a usual unicode symbol,
directly translated (0x0101  in   Unicode   is   0xc4   0x81   in
utf8).

Yes, indeed it is a working key that was not using XCompose but refers to a Unicode symbol number.


KeyPress event, serial 37, synthetic NO, window 0x4c00001,
     root 0x168, subw 0x0, time 2802465, (-519,30), root:(568,309),
     state 0x4090, keycode 24 (keysym 0x1000101, U0101), same_screen YES,
     XLookupString gives 2 bytes: (c4 81) "??"
     XmbLookupString gives 2 bytes: (c4 81) "??"
     XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x4c00001,
     root 0x168, subw 0x0, time 2802581, (-519,30), root:(568,309),
     state 0x4090, keycode 24 (keysym 0x1000101, U0101), same_screen YES,
     XLookupString gives 2 bytes: (c4 81) "??"
     XFilterEvent returns: False


It seems then to be the good direction, so thank you but I do not see what I
could do now.

Thanks again!

Best,

Pierre-Luc

Le 13/03/2019 ?? 15:04, Pierre-Luc Angles a ??crit :
Dear Ilya, dear all,

Thanks again for this important remark.

My ~/.XCompose file is then the following:

<i_breve_below> : "i??"
<u_breve_below> : "u??"
<i_wtdot_ring_above> : "????"
<I_ring_above> : "I??"
<c_caron_dot_below> : "????"
<C_caron_dot_below> : "????"
<s_macron_below> : "s??"
<S_macron_below> : "S??"
<H_macron_below> : "H??"
<h_circumf_below> : "h??"
<H_circumf_below> : "H??"

My /usr/share/X11/XKeysymDB is the following:

i_breve_below        :100050F5
u_breve_below        :100050F6
i_wtdot_ring_above    :100050F7
I_ring_above        :100050F8
c_caron_dot_below    :100050F9
C_caron_dot_below    :100050FA
s_macron_below        :100050FB
S_macron_below        :100050FC
H_macron_below        :100050FD
h_circumf_below        :100050FE
H_circumf_below        :100050FF

and in my keyboard layout I have tried in a first time with:


key <AE01>    { [        ampersand,                1,
i_breve_below,                   U032F ] };

and afterwards i a second time with

key <AE01>    { [        ampersand,                1,
U100050F5,                   U032F ] };

The keyboard is working but the i_breve_below or U100050F5 is not
working (I still have this xev when I type on the ampersand key + the
AltGr modifier:

KeyRelease event, serial 37, synthetic NO, window 0x4e00001,
      root 0x168, subw 0x0, time 2120434, (-409,14), root:(142,282),
      state 0x4090, keycode 10 (keysym 0xb9, onesuperior), same_screen YES,
      XKeysymToKeycode returns keycode: 49
      XLookupString gives 2 bytes: (c2 b9) "??"
      XFilterEvent returns: False

I do not see where the problem is now...

It could be helpful if some one has a key.

Thanks again and sorry for bothering you with that.

Best,

Pierre-Luc
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