From 232bdaaca98c34a99ffadf27bf6ee08be6cc8f6a Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Fri, 13 Jan 2023 14:17:58 +0000
Subject: [PATCH] patch 9.0.1189: invalid memory access with folding and using
"L"
Problem: Invalid memory access with folding and using "L".
Solution: Prevent the cursor from moving to line zero.
---
src/normal.c | 3 ++-
src/testdir/test_fold.vim | 8 ++++++++
src/version.c | 2 ++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/src/normal.c b/src/normal.c
index c319be599..3d9f74dec 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -3729,7 +3729,8 @@ nv_scroll(cmdarg_T *cap)
{
(void)hasFolding(curwin->w_cursor.lnum,
&curwin->w_cursor.lnum, NULL);
- --curwin->w_cursor.lnum;
+ if (curwin->w_cursor.lnum > curwin->w_topline)
+ --curwin->w_cursor.lnum;
}
}
else
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index adf9e5207..f915a6613 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1675,4 +1675,12 @@ func Test_sort_closed_fold()
bwipe!
endfunc
+func Test_indent_with_L_command()
+ " The "L" command moved the cursor to line zero, causing the text saved for
+ " undo to use line number -1, which caused trouble for undo later.
+ new
+ sil! norm 8R
V{zf8=Lu
+ bwipe!
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index 1d81e7b6f..64f7d887b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -695,6 +695,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1189,
/**/
1188,
/**/
--
2.40.0