On 25.4.2013, at 16.39, Lutz Preßler <lutz.press...@sernet.de> wrote:
> on a system with dovecot 2.2 I've got a mailbox containing multiple mails > from a person called Krüger, but From: header encoded differently. > Some are encoded in UTF-8 normalization form decomposed (as used by Mac OSX), > that is u and umlaut accent as sperate combined codepoints > instead of one ü: > > From: =?utf-8?Q?replaced_Kru=CC=88ger?= <krueger@some.domain> > > Searching within roundcube webmail for "krüger" as sender > missis this mails. > > Roundcube sends (dovecot rawlog): > A0003 UID THREAD REFS UTF-8 ALL HEADER FROM {7+}krüger > > Is this supposed to work? Haven't done any more debugging > (other search variants) or read RFCs. As a user I would expect > Unicode equivalence rules be applied (see > http://en.wikipedia.org/wiki/Unicode_equivalence) IMAP requires using i;unicode-casemap by default, as specified by RFC 5051. Then again, others could be supported as well, and it's not really a requirement that the search can't handle more flexible searches.. Anyway, that's what Dovecot currently has implemented, and I guess it doesn't do what you want it to do. But there is a partial solution for this: http://dovecot.org/patches/2.1/icu-1.2.tar.gz It probably does what you want, but it only works with fts-lucene.