been using isinstance() on wrong type instead of instance

lib/python/Products/PluginIndexes/TextIndex/TextIndex.py

@@ -87,7 +87,7 @@
 
 """
 
-__version__ = '$Revision: 1.19 $'[11:-2]
+__version__ = '$Revision: 1.20 $'[11:-2]
 
 
 import string, re
@@ -631,8 +631,7 @@ class TextIndex(PluggableIndex.PluggableIndex, Persistent,
         operandType = type(left)
         if operandType is IntType:
             left = self[left]
-        elif isinstance(operandType,StringType) or \
-             isinstance(operandType,UnicodeType):
+        elif operandType in (StringType,UnicodeType): 
             left = self[left]        
         elif operandType is ListType:
             left = self.evaluate(left)
@@ -640,8 +639,7 @@ class TextIndex(PluggableIndex.PluggableIndex, Persistent,
         operandType = type(right)
         if operandType is IntType:
             right = self[right]
-        elif isinstance(operandType,StringType) or \
-             isinstance(operandType,UnicodeType):
+        elif operandType in (StringType,UnicodeType): 
             right = self[right]       
         elif operandType is ListType:
             right = self.evaluate(right)