bug#39659: 27.0.60; inappropriate han script definition in char-script-table

[Eli Zaretskii <eliz@gnu.org>]

> From: ynyaaa@gmail.com
> Date: Tue, 18 Feb 2020 22:50:57 +0900
> 
> 'han' script is defined in char-script-table as:
> 	2E80-2FDF	han
> 	3200-9FFF	han
> 	F900-FAFF	han
> 	FE30-FE4F	han
> 	1F200-1F2FF	han
> 	20000-2A6DF	han
> 	2A700-2EBEF	han
> 	2F800-2FA1F	han
> 
> It is better to set values as:
> 	3200-33FF	cjk-misc
> 	4DC0-4DFF	cjk-misc
> 	FE30-FE4F	cjk-misc
> 	1F200-1F2FF	cjk-misc
> 
> If enclosed CJK Ideographs should be 'han' script,
> enclosed Hanguls should be 'hangul' script,
> enclosed Katakana should be 'kana' script,
> and enclosed Numbers should be 'symbol' script.

Please provide some rationale for the differences, just saying
"better" and "should" doesn't explain why you think the changes are
for the good.

CC'ing Handa-san, who I hope will have some comments on this.

Thanks.