per-buffer language environments

[Werner LEMBERG]

According to the documentation, set-language-environent acts globally.
However, at least for CJK documents, it would be very helpful if this
could be controlled on a per-buffer basis[1].  For example, on my
GNU/Linux box with latin-1 as the default langauge environment, while
editing some Japanese text, I see the katakana glyphs from the
`simsun' font which look particularly ugly.  Assuming that I edit a
Chinese text in parallel, a Japanese font from a Japanese language
environment would miss most of the Chinese characters, causing
fallback character substitution which looks ugly again...


   Werner


[1] An extension of this would be enriched text which supports
multiple language environments within a buffer.