From: Grigori Goronzy <greg@chown.ath.cx>
Date: Mon, 15 Aug 2011 22:26:16 +0000 (+0200)
Subject: Fix trimming function
X-Git-Tag: 0.13.0~28^2~107
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d5091c88d10cbea95f3e45b31a8738d7cd8e3819;p=libass

Fix trimming function

Did not correctly handle empty strings (only whitespace). Whoops.
---

diff --git a/libass/ass_utils.c b/libass/ass_utils.c
index 0fc8b2a..40e6533 100644
--- a/libass/ass_utils.c
+++ b/libass/ass_utils.c
@@ -338,7 +338,7 @@ char *trim_space(char *str)
     int right = strlen(str) - 1;
 
     while (isspace(str[left])) left++;
-    while (isspace(str[right])) right--;
+    while (right > left && isspace(str[right])) right--;
 
     if (left > 0)
         for (i = 0; i <= right - left; i++)