Add regression test for the typo-buglet Jeremy fixed, and fix the bug that

uncovered.

lib/python/TAL/markupbase.py

@@ -195,7 +195,7 @@ class ParserBase:
                     j = rawdata.find(")", j) + 1
                 else:
                     return -1
-                while rawdata[j:j+1] in string.whitespace:
+                while rawdata[j:j+1].isspace():
                     j = j + 1
                 if not rawdata[j:]:
                     # end of buffer, incomplete

lib/python/TAL/tests/test_htmlparser.py

@@ -294,6 +294,12 @@ DOCTYPE html [
             ("endtag", "script"),
             ])
 
+    def check_enumerated_attr_type(self):
+        s = "<!DOCTYPE doc [<!ATTLIST doc attr (a | b) >]>"
+        self._run_check(s, [
+            ('decl', 'DOCTYPE doc [<!ATTLIST doc attr (a | b) >]'),
+            ])
+
 
 # Support for the Zope regression test framework:
 def test_suite():