From 58f94861442d182e153ba56b63b5b9845b295d2f Mon Sep 17 00:00:00 2001
From: Brandon Simmons <34775764+simmsbra@users.noreply.github.com>
Date: Thu, 20 Jul 2023 19:56:08 -0500
Subject: fix(folds): update folds in Insert mode with fdm=indent (#24402)

Previously, when using foldmethod=indent, inserting an unindented line
would inadvertently open closed folds below it.
As a performance improvement, folds were only updated once, across all
lines, after Insert mode was exited.

Now, the performance improvement is no longer being used when
foldmethod=indent, so folds are updated multiple times during Insert
mode, but only across the lines that are changing, which preserves the
folds (and their open/close states) instead of recreating them.
---
 src/nvim/fold.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/nvim/fold.c b/src/nvim/fold.c
index 13329040e1..bdf2e26ac6 100644
--- a/src/nvim/fold.c
+++ b/src/nvim/fold.c
@@ -771,7 +771,7 @@ void clearFolding(win_T *win)
 /// The changes in lines from top to bot (inclusive).
 void foldUpdate(win_T *wp, linenr_T top, linenr_T bot)
 {
-  if (disable_fold_update || State & MODE_INSERT) {
+  if (disable_fold_update || (State & MODE_INSERT && !foldmethodIsIndent(wp))) {
     return;
   }
 
-- 
cgit