From 9c2551b3b9d2019d384a6e4fd695650a2b705390 Mon Sep 17 00:00:00 2001
From: Jfreegman <Jfreegman@gmail.com>
Date: Sun, 8 Dec 2013 16:10:52 -0500
Subject: [PATCH] small fix

---
 src/misc_tools.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/misc_tools.c b/src/misc_tools.c
index 0a4205e..9de0787 100644
--- a/src/misc_tools.c
+++ b/src/misc_tools.c
@@ -299,6 +299,9 @@ int complete_line(wchar_t *buf, size_t *pos, size_t *len, const uint8_t *list, i
             n_endchrs = 2;
     }
 
+    if (string_is_empty(sub))
+        return -1;
+
     int s_len = strlen(sub);
     const uint8_t *match;
     bool is_match = false;