Problem: When a terminal buffer is shown inside a popup with 'opacity'
set to a value other than 100, typing into it freezes Vim.
Only the first keystroke is drawn; afterwards no input is
processed and the screen stops updating.
Solution: When marking background lines for redraw to keep opacity
blend cells fresh, do not raise must_redraw. This marking
happens from inside update_screen() (via
may_update_popup_mask()), so raising must_redraw makes
terminal_loop()'s "while (must_redraw != 0) update_screen()"
loop never terminate. Add redraw_win_range_now() that
updates only the per-window state and use it from
redraw_win_under_opacity_popup() (Hirohito Higashi)
fixes: #20214closes: #20220
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
Hirohito Higashi
f281493c49