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patch 8.2.4987: after deletion a small fold may be closable

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Problem:    After deletion a small fold may be closable.
Solution:   Check for a reverse range. (Brandon Simmons, closes #10457)
This commit is contained in:
Brandon Simmons
2022-05-20 18:25:21 +01:00
committed by Bram Moolenaar
parent 8a83ffdc43
commit 3fcccf94e8
3 changed files with 43 additions and 4 deletions
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16
src/fold.c
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@@ -829,10 +829,18 @@ 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.
(void)foldFind(&wp->w_folds, top, &fp);
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;
}
(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 = MAYBE;
++fp;
@@ -2165,7 +2173,7 @@ foldUpdateIEMS(win_T *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);
}