[Checkins] SVN: z3c.pt/trunk/src/z3c/pt/expressions.py API update.

[Malthe Borch]

Log message for revision 93042:
  API update.

Changed:
  U   z3c.pt/trunk/src/z3c/pt/expressions.py

-=-
Modified: z3c.pt/trunk/src/z3c/pt/expressions.py
===================================================================
--- z3c.pt/trunk/src/z3c/pt/expressions.py	2008-11-17 12:37:18 UTC (rev 93041)
+++ z3c.pt/trunk/src/z3c/pt/expressions.py	2008-11-17 12:37:34 UTC (rev 93042)
@@ -87,6 +87,9 @@
         """
         >>> translate = PathTranslator().translate
 
+        >>> translate("") is None
+        True
+
         >>> translate("a/b")
         value("_path(a, request, True, 'b')")
 
@@ -111,6 +114,9 @@
         value("_path(context, request, True, '@@%s' % (view,))")
         """
 
+        if not string:
+            return None
+        
         if not self.path_regex.match(string.strip()):
             raise SyntaxError("Not a valid path-expression: %s." % string)