handle empty strings in ex_look

1 files changed, 2 insertions, 0 deletions

diff --git a/exec.c b/exec.c
index 72c37fc..3196c44 100644
--- a/exec.c
+++ b/exec.c
@@ -61,6 +61,8 @@ ex_look(W *w, Rune *s, unsigned n)
 {
 	unsigned p;
 
+	if (n == 0)
+		return 1;
 	p = eb_look(w->eb, w->cu+1, s, n);
 	if (p == -1u)
 		p = eb_look(w->eb, 0, s, n);