MBOX-Line: From tss at iki.fi  Mon Sep 10 09:33:32 2012
To: imap-protocol@u.washington.edu
From: Timo Sirainen <tss@iki.fi>
Date: Fri Jun  8 12:34:48 2018
Subject: [Imap-protocol] Comparators?
Message-ID: <25F5C770-A983-40E7-A075-87A27449240F@iki.fi>

http://www.iana.org/assignments/collation/collation-index.html

Looks like there aren't many comparators. I guess there aren't any other such lists either by other organizations? I'm mainly wondering how to add support for languages where the acutes/graves in letters should be ignored by searches. I guess I could simply add some kludgy setting for that, but then I shouldn't be advertising I18NLEVEL=1 anymore, because i;unicode-casemap is no longer being used as the default comparator..

Also full text search indexes make the matter of changing comparators or using multiple comparators more-or-less impossible. Of course I18NLEVEL=2 requires that i;unicode-casemap must be one of the available comparators, so I couldn't advertise that either.


