Something similar, maybe not the same, also happens with Japanese. My locale is en_US.UTF-8, and in Emacs 22 I can use SCIM for Japanese input no problem. On Emacs 23, no luck.
If I do the locale fix like above, in my case "LC_CTYPE=ja_JP.UTF-8 emacs", it works on Emacs 23 as well.
Something similar, maybe not the same, also happens with Japanese. My locale is en_US.UTF-8, and in Emacs 22 I can use SCIM for Japanese input no problem. On Emacs 23, no luck.
If I do the locale fix like above, in my case "LC_CTYPE= ja_JP.UTF- 8 emacs", it works on Emacs 23 as well.