commit a0c4e2f2d7aa164d9d7692702c752ea063bd3a8c
author zeertzjq <zeertzjq@outlook.com> Sat Jan 29 10:59:53 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Sat Jan 29 10:59:53 2022 +0000
tree 3537a2b9dd2fe0308c33c23ecfc1fbb3111afc26
parent 06f15416bb8d5636200a10776f1752c4d6e49f31

patch 8.2.4248: no proper test for moving the window separator

Problem:    No proper test for moving the window separator.
Solution:   Add a test.  Add comment in code. (closes #9656)

src/window.c

diff --git a/src/window.c b/src/window.c
index c77149f..f80334d 100644
--- a/src/window.c
+++ b/src/window.c
@@ -6187,7 +6187,9 @@
     if (offset <= 0)		// No room at all, quit.
 	return;
     if (fr == NULL)
-	return;			// Safety check, should not happen.
+	// This can happen when calling win_move_separator() on the rightmost
+	// window.  Just don't do anything.
+	return;			
 
     // grow frame fr by offset lines
     frame_new_width(fr, fr->fr_width + offset, left, FALSE);