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patch 9.1.0100: Redrawing can be improved with undo and 'spell'

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Problem:  When undoing with 'spell', redrawWinline() is called after
          changed_lines(), while later win_update() sets redraw type to
          UPD_NOT_VALID, even though w_redraw_top and w_redraw_bot are
          still valid.
Solution: Only set redraw type to UPD_NOT_VALID when inserting/deleting
          lines after parts of window has pending redraw, i.e., when
          changed_lines() is called after redrawWinline().
          (zeertzjq)

closes: #14019

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
zeertzjq
2024-02-12 20:28:01 +01:00
committed by Christian Brabandt
parent a0010a186d
commit f2d90a3511
4 changed files with 11 additions and 11 deletions
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6
src/change.c
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@@ -559,6 +559,12 @@ changed_common(
if (!redraw_not_allowed && wp->w_redr_type < UPD_VALID)
wp->w_redr_type = UPD_VALID;
// When inserting/deleting lines and the window has specific lines
// to be redrawn, w_redraw_top and w_redraw_bot may now be invalid,
// so just redraw everything.
if (xtra != 0 && wp->w_redraw_top != 0)
redraw_win_later(wp, UPD_NOT_VALID);
// Reset "w_skipcol" if the topline length has become smaller to
// such a degree that nothing will be visible anymore, accounting
// for 'smoothscroll' <<< or 'listchars' "precedes" marker.