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-rw-r--r--src/nvim/window.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/src/nvim/window.c b/src/nvim/window.c
index 4dfc72f212..8d7e20bb73 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -641,11 +641,12 @@ int win_split_ins(int size, int flags, win_T *new_wp, int dir)
if (oldwin->w_width - new_size - 1 < p_wmw)
do_equal = TRUE;
- /* We don't like to take lines for the new window from a
- * 'winfixwidth' window. Take them from a window to the left or right
- * instead, if possible. */
- if (oldwin->w_p_wfw)
- win_setwidth_win(oldwin->w_width + new_size, oldwin);
+ // We don't like to take lines for the new window from a
+ // 'winfixwidth' window. Take them from a window to the left or right
+ // instead, if possible. Add one for the separator.
+ if (oldwin->w_p_wfw) {
+ win_setwidth_win(oldwin->w_width + new_size + 1, oldwin);
+ }
/* Only make all windows the same width if one of them (except oldwin)
* is wider than one of the split windows. */