+>>> for you? ;) --Pawel
+
+>>>> Of course you can put Polish characters in the title. but the page
+>>>> title and filename are not identical. Ikiwiki has to place some limits
+>>>> on what filenames are legal to prevent abuse. Since
+>>>> the safest thing to do in a security context is to deny by default and
+>>>> only allow a few well-defined safe things, that's what it does, so
+>>>> filenames are limited to basic alphanumeric characters.
+>>>>
+>>>> It's not especially hard to transform your title into get a legal
+>>>> ikiwiki filename:
+
+ joey@kodama:~>perl -MIkiWiki -le 'print IkiWiki::titlepage(shift).".mdwn"' "Błąd"
+ B__197____130____196____133__d.mdwn
+
+>>>>> Thanks for the hint! It's good for me, but rather not for common users :)
+
+>>>>>> Interesting... I have another result:
+>>>>>>
+>>>>>> perl -MIkiWiki -le 'print IkiWiki::titlepage(shift).".mdwn"' "Błąd"
+>>>>>> B__179____177__d.mdwn
+>>>>>>
+>>>>>> What's your locale? I have both pl\_PL (ISO-8859-2) and pl\_PL.UTF-8,
+>>>>>> but I use pl\_PL. Is it wrong? --Pawel
+
+>>>> Now, as to UTF7, in retrospect, using a standard encoding might be a
+>>>> better idea than coming up with my own encoding for filenames. Can
+>>>> you provide a pointer to a description to modified-UTF7? --[[Joey]]
+
+>>>>> The modified form of UTF7 is defined in [RFC 2060](http://www.ietf.org/rfc/rfc2060.txt)
+>>>>> for IMAP4 protocol (please see section 5.1.3 for details).
+
+>>>>> There is a Perl [Unicode::IMAPUtf7](http://search.cpan.org/~fabpot/Unicode-IMAPUtf7-2.01/lib/Unicode/IMAPUtf7.pm)
+>>>>> module at the CPAN, but probably it hasn't been debianized yet :( --Pawel