check if array is present before attempting to retrieve item

hasgeek · Jun 2, 2015 · ef19c99 · ef19c99
1 parent 4fecc1f
commit ef19c99
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/coaster/utils.py b/coaster/utils.py
@@ -507,9 +507,8 @@ def for_tsquery(text):
             counter -= 1
             counterlength -= 1
         counter += 1
-    if tokens:
-        while tokens[0] in ('&', '|', ':*', ')'):
-            tokens.pop(0)  # Can't start with a binary or suffix operator
+    while tokens and tokens[0] in ('&', '|', ':*', ')', '!'):
+        tokens.pop(0)  # Can't start with a binary or suffix operator
     if tokens:
         while tokens[-1] in ('&', '|', '!', '('):
             tokens.pop(-1)  # Can't end with a binary or prefix operator