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vim-patch:8.2.1345: Redraw error when using visual block and scroll

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Problem:    Redraw error when using visual block and scroll.
Solution:   Add check for w_topline. ( closes vim/vim#6597)
f8992d47cd
This commit is contained in:
Aufar Gilbran
2020-10-02 03:20:58 +08:00
parent a260d5def3
commit e852bad3a7
3 changed files with 72 additions and 5 deletions
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11
src/nvim/screen.c
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@@ -899,11 +899,12 @@ static void win_update(win_T *wp)
|| type == INVERTED || type == INVERTED_ALL)
&& !wp->w_botfill && !wp->w_old_botfill
) {
if (mod_top != 0 && wp->w_topline == mod_top) {
/*
* w_topline is the first changed line, the scrolling will be done
* further down.
*/
if (mod_top != 0
&& wp->w_topline == mod_top
&& (!wp->w_lines[0].wl_valid
|| wp->w_topline == wp->w_lines[0].wl_lnum)) {
// w_topline is the first changed line and window is not scrolled,
// the scrolling from changed lines will be done further down.
} else if (wp->w_lines[0].wl_valid
&& (wp->w_topline < wp->w_lines[0].wl_lnum
|| (wp->w_topline == wp->w_lines[0].wl_lnum