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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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13
src/drawscreen.c
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@@ -1468,9 +1468,6 @@ win_update(win_T *wp)
# define DID_FOLD 3 // updated a folded line
int did_update = DID_NONE;
linenr_T syntax_last_parsed = 0; // last parsed text line
// remember the current w_last_cursorline, it changes when drawing the new
// cursor line
linenr_T last_cursorline = wp->w_last_cursorline;
#endif
linenr_T mod_top = 0;
linenr_T mod_bot = 0;
@@ -2245,8 +2242,8 @@ win_update(win_T *wp)
#endif
))))
#ifdef FEAT_SYN_HL
|| (wp->w_p_cul && (lnum == wp->w_cursor.lnum
|| lnum == last_cursorline))
|| (wp->w_p_cul && lnum == wp->w_cursor.lnum)
|| lnum == wp->w_last_cursorline
#endif
)
{
@@ -2551,6 +2548,12 @@ win_update(win_T *wp)
// End of loop over all window lines.
#ifdef FEAT_SYN_HL
// Now that the window has been redrawn with the old and new cursor line,
// update w_last_cursorline.
wp->w_last_cursorline = wp->w_p_cul ? wp->w_cursor.lnum : 0;
#endif
#ifdef FEAT_VTP
// Rewrite the character at the end of the screen line.
// See the version that was fixed.