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-rw-r--r--src/evalwindow.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/evalwindow.c b/src/evalwindow.c
index 492269ede4..e00747a2de 100644
--- a/src/evalwindow.c
+++ b/src/evalwindow.c
@@ -673,6 +673,10 @@ f_win_execute(typval_T *argvars, typval_T *rettv)
win_T *save_curwin;
tabpage_T *save_curtab;
+ // Return an empty string if something fails.
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
if (wp != NULL && tp != NULL)
{
pos_T curpos = wp->w_cursor;