[Dovecot] Japanese Search

[Timo Sirainen]

On 20.12.2004, at 04:04, Kazuo Moriwaka wrote:

> I'm trying to debug search command with Japanese 'ISO-2022-JP' codec.
>
> ISO-2022-JP codec needs to keep character cases until convert to
> UTF-8.
>
> For example:
>  * '\033[$B%s\033[(B' means a character sounds 'N'
>  * '\033[$B%S\033[(B' means a character sounds 'Bi'
>
> It causes a trouble in searches with Japanese.
> I found imap/imap-search.c/add_new() makes strings uppercase
> and fixed. But search results didn't affected.. ;-)

I'll fix add_new(), but I'm not sure what else could be there.. That 
value gets passed as key parameter to message_body_search() and 
message_header_search_init(). Those call charset_to_ucase_utf8_string() 
to get an uppercase utf-8 string from it which is then compared to text 
found in messages.

Did you check if the ISO-2022-JP text is converted correctly to UTF-8 
at all? Looking at charset_to_ucase_utf8() in 
lib-charset/charset-iconv.c might show something.
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