This patch is a workaround for the traceback described here, which prevents
the AdvancedSearch macro on the FindPage page from working.

http://moinmo.in/MoinMoinBugs/FindPage

ERROR 2010-06-08 18:30:00,990 MoinMoin.macro:132 Macro AdvancedSearch (page: 'FindPage') raised an exception:
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/MoinMoin/macro/__init__.py", line 122, in execute
    return execute(self, args)
  File "/usr/lib/python2.6/site-packages/MoinMoin/macro/AdvancedSearch.py", line 189, in execute
    return advanced_ui(macro)
  File "/usr/lib/python2.6/site-packages/MoinMoin/macro/AdvancedSearch.py", line 141, in advanced_ui
    (_('File Type'), unicode(mt_select), ''),
  File "/usr/lib/python2.6/site-packages/MoinMoin/widget/html.py", line 131, in __unicode__
    co = unicode(c)
  File "/usr/lib/python2.6/site-packages/MoinMoin/widget/html.py", line 131, in __unicode__
    co = unicode(c)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 3: ordinal not in range(128)

This occurs if there are non-ASCII characters in /etc/mime.types, such as this entry on Fedora 13:

application/vnd.geocube+xml                     g3 g³

--- MoinMoin/widget/html.py	2010-07-28 16:08:47.000000000 +0100
+++ MoinMoin/widget/html.py	2010-08-04 12:41:59.270651868 +0100
@@ -119,7 +119,10 @@
     def __unicode__(self):
         childout = []
         for c in self.children:
-            co = unicode(c)
+            try:        
+                co = unicode(c)
+            except:
+                co = "Failed to convert to unicode"
             childout.append(co)
         return "<%s>%s</%s>" % (
             self._openingtag(),