Allow Wikicode objects to be pickled properly.

CHANGELOG

@@ -2,6 +2,8 @@ v0.5 (unreleased):
 
 - Made Template.remove(keep_field=True) behave more reasonably when the
   parameter is already empty.
+- Wikicode objects can now be pickled properly (fixed infinite recursion error
+  on incompletely-constructed StringMixIn subclasses).
 - Fixed Wikicode.matches()'s behavior on iterables besides lists and tuples.
 - Fixed len() sometimes raising ValueError on empty node lists.
 - Fixed release script after changes to PyPI.

docs/changelog.rst

@@ -9,6 +9,9 @@ Unreleased
 
 - Made :meth:`Template.remove(keep_field=True) <.Template.remove>` behave more
   reasonably when the parameter is already empty.
+- :class:`.Wikicode` objects can now be pickled properly (fixed infinite
+  recursion error on incompletely-constructed :class:`.StringMixIn`
+  subclasses).
 - Fixed :meth:`.Wikicode.matches`\ 's behavior on iterables besides lists and
   tuples.
 - Fixed ``len()`` sometimes raising ``ValueError`` on empty node lists.

mwparserfromhell/string_mixin.py

@@ -108,6 +108,9 @@ class StringMixIn(object):
         return str(item) in self.__unicode__()
 
     def __getattr__(self, attr):
+        if not hasattr(str, attr):
+            raise AttributeError("{0!r} object has no attribute {1!r}".format(
+                type(self).__name__, attr))
         return getattr(self.__unicode__(), attr)
 
     if py3k: