I tried sm 1.4.2cvs with Russian locale set to utf-8 (in i18n.php).
Unfortunately, the experience is bad: replies to messages written in koi8-r or
1251 are not converted to utf-8, so they look like square boxes in quoted
strings in the reply textarea field. There are other problems with headers
etc., so in my installation I had to revert to koi8-r by changing the
settings in i18n.php and recoding the po-file to koi8-r.
Am I missing something to make it function properly? Otherwise it will be
necessary to revert the default Russian localization to koi8-r for sm 1.4.2
release in order not to break existing installations.
I think it is also necessary to write an update to Russian howto regarding the
different encodings. I can do it, but let us decide first about the default
Russian encoding for the 1.4.2 release.