As russian user of tk toolkit, I feel much concern about i18n issues of tk. In my homepage   [http://kovalenko.webzone.ru] there's a couple of my patches, that makes tk more i18n-aware ((e.g. in $canvas postscript output)).  I'm going to keep my page up-to-date, so any non-ascii-non-latin1 user can always find there nessesary fixes, both for cvs head and for last stable version.