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bug#55368: 29.0.50; Unreliable input-pending-p and throw-on-input on Ema
From: |
Po Lu |
Subject: |
bug#55368: 29.0.50; Unreliable input-pending-p and throw-on-input on Emacs 29 / pgtk in Wayland |
Date: |
Fri, 13 May 2022 10:01:18 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) |
Vijay Marupudi <vijay@vijaymarupudi.com> writes:
> Hello,
>
> I would like to report an inconsistency issue with how pending input is
> communicated with elisp code. In Emacs 29, input-pending-p sometimes
> returns t and while-no-input is interrupting code (because it uses
> throw-on-input) AFTER all keyboard input has already been read into
> elisp code and is being processed, and when there is no pending input.
> This is leading to code being unable to process and react to the latest
> input because it gets interrupted while handling the latest input.
>
> This issue does not occur in X.Org sessions, only Wayland.
Does that mean the bug doesn't happen in the regular X build, or does it
mean that nothing happens if you run the PGTK build under X Windows?
And what happens if you comment out this code in `readable_events' in
keyboard.c?
if (!(flags & READABLE_EVENTS_IGNORE_SQUEEZABLES) && some_mouse_moved ())
return 1;
if (single_kboard)
{
if (current_kboard->kbd_queue_has_data)
return 1;
}
else
{
KBOARD *kb;
for (kb = all_kboards; kb; kb = kb->next_kboard)
if (kb->kbd_queue_has_data)
return 1;
}