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Avoid assertion violations when line numbers are displayed

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* src/xdisp.c (redisplay_window): Clear the window's desired glyph
matrix before calling try_window with the same starting	point.
This avoids assertion violations when switching from a buffer
without line numbers to a buffer with line numbers.  (Bug28710)
This commit is contained in:
Eli Zaretskii 2017-10-09 15:28:16 +03:00
parent 5b81f65ad0
commit 2da83c9d36
1 changed files with 1 additions and 0 deletions
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src/xdisp.c
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@ -17036,6 +17036,7 @@ redisplay_window (Lisp_Object window, bool just_this_one_p)
= try_window_reusing_current_matrix (w)))
{
IF_DEBUG (debug_method_add (w, "1"));
clear_glyph_matrix (w->desired_matrix);
if (try_window (window, startp, TRY_WINDOW_CHECK_MARGINS) < 0)
/* -1 means we need to scroll.
0 means we need new matrices, but fonts_changed