bug#13936: Default to UTF-8 for most Emacs source files

[handa]

In article <m24nggjmus.fsf@igel.home>, Andreas Schwab <schwab@linux-m68k.org> 
writes:

> Paul Eggert <eggert@cs.ucla.edu> writes:
> > -  CJK variety: GB($AT*Fx(B,$A?*7"(B), BIG5($(0&x86(B,$(0DeBv(B), 
> > JIS($B855$(B,$B3+H/(B), KSC($(Cj*Q((B,$(CKR[!(B)
> > +  CJK variety: GB($B85]c(B,$A?*7"(B), BIG5($B85]f(B,$B3+b$(B), 
> > JIS($B855$(B,$B3+H/(B), KSC($B85]f(B,$B3+b$(B)

> You cannot do that.  You are throwing away the charset difference which
> is the whole point of the exercise.

Right.  When a file is in some legacy encoding such as
iso-2022-7bit, Emacs attached charset properties to proper
ranges of text, which works as a hint for selecting a proper
font especially for CJK characters.  The same can be said
for etc/tutorials/TUTORIAL.ja.  This file should be shown in
a proper Japanese font even for a user not in Japanese
lang. env.

---
Kenichi Handa
handa@gnu.org