--- a/Mailman/Cgi/admin.py	2015-03-09 20:37:28 +0000

+++ b/Mailman/Cgi/admin.py	2015-04-13 22:17:02 +0000

@@ -911,6 +911,15 @@

     all.sort(lambda x, y: cmp(x.lower(), y.lower()))

     # See if the query has a regular expression

     regexp = cgidata.getvalue('findmember', '').strip()

+    try:

+        regexp = regexp.decode(Utils.GetCharSet(mlist.preferred_language))

+    except UnicodeDecodeError:

+        # This is probably a non-ascii character and an English language

+        # (ascii) list.  Even if we didn't throw the UnicodeDecodeError,

+        # the input may have contained mnemonic or numeric HTML entites mixed

+        # with other characters.  Trying to grok the real meaning out of that

+        # is complex and error prone, so we don't try.

+        pass

     if regexp:

         try:

             cre = re.compile(regexp, re.IGNORECASE)