[shitamo]

Problem

With the uim input method, actions sent from the uim toolbar or the
IM switcher (e.g. "About this program" in the property menu, mode
changes, commit_string) are sometimes silently ignored while mlterm
has input focus.

Cause

uim-helper-server relays every client's messages to all other clients.
helper_read_handler() resets focused_uim to NULL on any "focus_in"
message, assuming another application has taken the focus. But a
background uim client (for example a GTK/Electron application) can
also send "focus_in" while mlterm still has the input focus. In that
case focused_uim stays NULL until the next focused() call, and
"prop_activate", "commit_string" and "im_list_get" are dropped.

Fix

Track whether the terminal itself currently has input focus
(active_uim, set in focused(), cleared in unfocused() and destroy()),
and only clear focused_uim on a foreign "focus_in" when the terminal
does not have the focus. Behaviour when switching to another
application is unchanged.

Testing

Built against mlterm with uim 1.9.9. With another
uim client (Electron app) running, selecting "About this program" from
the uim toolbar while mlterm is focused used to work only
intermittently; it now works every time. Switching focus between
mlterm and other uim clients still behaves as before.

Generated with Claude Code

[arakiken]

Thank you.
I fixed it as follows.
9139d62#diff-a7819173ce9711eb58b04289c8bb0086f5fdc505956eba14151dc466b1e5f32a

[shitamo]

Thank you.