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vim-patch:8.2.4987: after deletion a small fold may be closable (#18683)

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Problem:    After deletion a small fold may be closable.
Solution:   Check for a reverse range. (Brandon Simmons, closes vim/vim#10457)
3fcccf94e8
This commit is contained in:
Brandon Simmons
2022-05-21 18:27:54 -05:00
committed by GitHub
parent f0717ffade
commit 0c4086faa1
2 changed files with 40 additions and 4 deletions
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15
src/nvim/fold.c
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@@ -785,11 +785,18 @@ void foldUpdate(win_T *wp, linenr_T top, linenr_T bot)
}
if (wp->w_folds.ga_len > 0) {
// Mark all folds from top to bot as maybe-small.
linenr_T maybe_small_start = top;
linenr_T maybe_small_end = bot;
// Mark all folds from top to bot (or bot to top) as maybe-small.
if (top > bot) {
maybe_small_start = bot;
maybe_small_end = top;
}
fold_T *fp;
(void)foldFind(&wp->w_folds, top, &fp);
(void)foldFind(&wp->w_folds, maybe_small_start, &fp);
while (fp < (fold_T *)wp->w_folds.ga_data + wp->w_folds.ga_len
&& fp->fd_top < bot) {
&& fp->fd_top <= maybe_small_end) {
fp->fd_small = kNone;
fp++;
}
@@ -1929,7 +1936,7 @@ static void foldUpdateIEMS(win_T *const wp, linenr_T top, linenr_T bot)
bot = wp->w_buffer->b_ml.ml_line_count;
wp->w_foldinvalid = false;
// Mark all folds a maybe-small.
// Mark all folds as maybe-small.
setSmallMaybe(&wp->w_folds);
}