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patch 8.2.4614: redrawing too much when 'cursorline' is set

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Problem:    Redrawing too much when 'cursorline' is set and jumping around.
Solution:   Rely on win_update() to redraw the current and previous cursor
            line, do not mark lines as modified. (closes #9996)
This commit is contained in:
zeertzjq
2022-03-23 14:55:23 +00:00
committed by Bram Moolenaar
parent 3c5999e53d
commit c20e46a4e3
6 changed files with 13 additions and 43 deletions
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28
src/move.c
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@@ -115,14 +115,6 @@ comp_botline(win_T *wp)
set_empty_rows(wp, done);
}
#ifdef FEAT_SYN_HL
void
reset_cursorline(void)
{
curwin->w_last_cursorline = 0;
}
#endif
/*
* Redraw when w_cline_row changes and 'relativenumber' or 'cursorline' is
* set.
@@ -138,24 +130,8 @@ redraw_for_cursorline(win_T *wp)
&& (wp->w_valid & VALID_CROW) == 0
&& !pum_visible())
{
if (wp->w_p_rnu)
// win_line() will redraw the number column only.
redraw_win_later(wp, VALID);
#ifdef FEAT_SYN_HL
if (wp->w_p_cul)
{
if (wp->w_redr_type <= VALID && wp->w_last_cursorline != 0)
{
// "w_last_cursorline" may be outdated, worst case we redraw
// too much. This is optimized for moving the cursor around in
// the current window.
redrawWinline(wp, wp->w_last_cursorline);
redrawWinline(wp, wp->w_cursor.lnum);
}
else
redraw_win_later(wp, SOME_VALID);
}
#endif
// win_line() will redraw the number column and cursorline only.
redraw_win_later(wp, VALID);
}
}