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vim-patch:9.0.1279: display shows lines scrolled down erroneously (#22126)

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Problem:    Display shows lines scrolled down erroneously. (Yishai Lerner)
Solution:   Do not change "wl_lnum" at index zero. (closes vim/vim#11938)

61fdbfa1e3

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-02-05 09:37:12 +08:00
committed by GitHub
parent 4b9bb3a184
commit 5c4b503d3c
3 changed files with 76 additions and 1 deletions
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4
src/nvim/change.c
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@@ -296,7 +296,9 @@ static void changed_common(linenr_T lnum, colnr_T col, linenr_T lnume, linenr_T
for (int i = 0; i < wp->w_lines_valid; i++) {
if (wp->w_lines[i].wl_valid) {
if (wp->w_lines[i].wl_lnum >= lnum) {
if (wp->w_lines[i].wl_lnum < lnume) {
// Do not change wl_lnum at index zero, it is used to
// compare with w_topline. Invalidate it instead.
if (wp->w_lines[i].wl_lnum < lnume || i == 0) {
// line included in change
wp->w_lines[i].wl_valid = false;
} else if (xtra != 0) {