[i18n] Internationalization for imp search

[persian-horde@metanetworking.com]

Hello All,

Some locales including persian, japaneese and chinese which use from
specific charsets, could not search correctly when they use imp mailbox
search.
(see i18n mailing list, http://lists.horde.org/archives/i18n/Week-of-Mon-
20050509/thread.html)

This problem has been addressed in PHP >= 4.3.3 by including a charset
option, in imap_search function. But the Framework "IMAP_Search" library,
does not use from this argument, thus some locales have problem in
searching.

We fixed this issue temporariliy for our locale by sending an additional
charset parameter in Framework/Horde/IMAP/Search.php, e.g:
Line 173:

- if (!($indices = @imap_search($imap, $ob->fullquery, SE_UID))) {
+ if (!($indices = @imap_search($imap, $ob->fullquery, SE_UID,"utf-8"))) {


Our question is that how can we enhance the search function so it works
for all locales in general. One way is to pass the $nls['charsets']
[$language] to this Class. But not all locales have an specific charset
defined in nls.php.

Your comments are appreciated,

Thanks
Persian Horde Team