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Fix current-line hscrolling when overlays change

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* src/xdisp.c (redisplay_internal): Disable "optimization 1" when
auto-hscrolling current line and we're redisplaying the selected
window.  (Bug#43835)
This commit is contained in:
Eli Zaretskii 2020-10-08 14:45:16 +03:00
parent c56eeba2ce
commit 040dcbe53e
1 changed files with 6 additions and 1 deletions
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7
src/xdisp.c
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@ -15581,7 +15581,12 @@ redisplay_internal (void)
&& CHARPOS (this_line_end_pos) == CHARPOS (tlendpos) && CHARPOS (this_line_end_pos) == CHARPOS (tlendpos)
/* Line has same height as before. Otherwise other lines /* Line has same height as before. Otherwise other lines
would have to be shifted up or down. */ would have to be shifted up or down. */
&& this_line_pixel_height == line_height_before) && this_line_pixel_height == line_height_before
/* Cannot use this optimization if hscrolling current
line and this line is the current one, because
display_line above is not informed about the
current-line's vpos, and cannot DTRT in that case. */
&& !hscrolling_current_line_p (w))
{ {
/* If this is not the window's last line, we must adjust /* If this is not the window's last line, we must adjust
the charstarts of the lines below. */ the charstarts of the lines below. */