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Fix a FIXME In redisplay_internal

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* src/xdisp.c (redisplay_internal): Compare root frames before
setting the frame garbaged.
This commit is contained in:
Gerd Möllmann 2024-11-12 09:23:27 +01:00
parent 437ccbe612
commit 37cdf2897a
1 changed files with 12 additions and 9 deletions
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21
src/xdisp.c
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@ -17035,19 +17035,22 @@ redisplay_internal (void)
if (face_change)
windows_or_buffers_changed = 47;
/* FIXME: Can we do better for tty child frames? It could be
a bit faster when we switch between child frames of the same
root frame. OTOH, it's probably not a frequent use case. */
struct frame *previous_frame;
if ((FRAME_TERMCAP_P (sf) || FRAME_MSDOS_P (sf))
&& FRAME_TTY (sf)->previous_frame != sf)
&& (previous_frame = FRAME_TTY (sf)->previous_frame,
previous_frame != sf))
{
/* Since frames on a single ASCII terminal share the same
display area, displaying a different frame means redisplay
the whole thing. */
SET_FRAME_GARBAGED (sf);
if (previous_frame == NULL
|| root_frame (previous_frame) != root_frame (sf))
{
/* Since frames on a single terminal share the same display
area, displaying a different frame means redisplay the
whole thing. */
SET_FRAME_GARBAGED (sf);
#if !defined DOS_NT && !defined HAVE_ANDROID
set_tty_color_mode (FRAME_TTY (sf), sf);
set_tty_color_mode (FRAME_TTY (sf), sf);
#endif
}
FRAME_TTY (sf)->previous_frame = sf;
}