From a4ffeddce1bc56b0faa548e0485ccd6374c4e9d1 Mon Sep 17 00:00:00 2001
From: Dalf <alex@al-f.net>
Date: Sun, 7 Sep 2014 18:42:56 +0200
Subject: [PATCH] [fix] yahoo engines: parse_url doesn't throw an exception
 with not tracking URL

---
 searx/engines/yahoo.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/searx/engines/yahoo.py b/searx/engines/yahoo.py
index 3d048186d..5e34a2b07 100644
--- a/searx/engines/yahoo.py
+++ b/searx/engines/yahoo.py
@@ -40,9 +40,11 @@ def parse_url(url_string):
         if endpos > -1:
             endpositions.append(endpos)
 
-    end = min(endpositions)
-
-    return unquote(url_string[start:end])
+    if start==0 or len(endpositions) == 0:
+        return url_string        
+    else:
+        end = min(endpositions)
+        return unquote(url_string[start:end])
 
 
 # do search-request