GNU bug report logs - #74590
31.0.50 [scratch/igc branch]; key input sometimes skip fcitx input method preedit box

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From: Pip Cet <pipcet <at> protonmail.com>
To: Yikai Zhao <yikai <at> z1k.dev>
Cc: Gerd Möllmann <gerd.moellmann <at> gmail.com>, Helmut Eller <eller.helmut <at> gmail.com>, 74590 <at> debbugs.gnu.org
Subject: bug#74590: 31.0.50 [scratch/igc branch]; key input sometimes skip fcitx input method preedit box
Date: Mon, 02 Dec 2024 16:26:50 +0000

"Yikai Zhao" <yikai <at> z1k.dev> writes:

> I have reproduced the issue with your patch, here's the relevant log:

Thank you! So it seems we call XFilterEvent correctly but it incorrectly
indicates that the keypress (event 2) should be handled by Emacs rather
than the input method. That's rather puzzling, particularly since
subsequent calls to XFilterEvent return 1, indicating that the key
release is handled by the input method.

I'm pretty much stumped at this point. It might be a timing difference
between the MPS and non-MPS builds, but I think it's more likely to be
a bug in our MPS code.

> Please let me know if there's any other info I can provide.

Well, you already tried setting x-gtk-use-native-input to t :-)

One thing you could try is to run a full x11trace of the Emacs session
and see whether anything unusual is in there. But that's not guaranteed
to yield any results.

Pip

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