From 7bdfddc15768a1507b029578e408483efe51ba02 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Sun, 28 Sep 2014 10:58:20 +0200
Subject: Improve argument validation in text_insert

---
 text.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/text.c b/text.c
index fdcf1cf..650f095 100644
--- a/text.c
+++ b/text.c
@@ -504,6 +504,8 @@ static void change_free(Change *c) {
  *      \-+ <-- +-----+ <-- +---------------+ <-- +-/
  */
 bool text_insert(Text *txt, size_t pos, const char *data, size_t len) {
+	if (len == 0)
+		return true;
 	if (pos > txt->size)
 		return false;
 	if (pos < txt->lines.pos)
-- 
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