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bug#23814: 24.5; bug of hz coding-system
From: |
Eli Zaretskii |
Subject: |
bug#23814: 24.5; bug of hz coding-system |
Date: |
Sat, 09 Jul 2016 14:20:19 +0300 |
Ping! Could you please comment on this issue?
> Date: Wed, 22 Jun 2016 20:26:53 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 23814@debbugs.gnu.org
>
> > From: ynyaaa@gmail.com
> > Cc: 23814@debbugs.gnu.org
> > Date: Thu, 23 Jun 2016 02:04:18 +0900
> >
> > Eli Zaretskii <eliz@gnu.org> writes:
> >
> > >> `encode-hz-region' uses `iso-2022-7bit' coding-system internally,
> > >> replacing it with the coding-system below will work.
> > >>
> > >> (define-coding-system 'iso-2022-cn-gb
> > >> "ISO 2022 based 7bit encoding only for Chinese GB2312."
> > >> :coding-type 'iso-2022
> > >> :mnemonic ?C
> > >> :charset-list '(ascii chinese-gb2312)
> > >> :designation [(ascii chinese-gb2312) nil nil nil]
> > >> :flags '(ascii-at-eol ascii-at-cntl designation 7-bit safe)
> > >> )
> > >
> > > What advantages does this change have?
> >
> > `iso-2022-7bit' may encode same character to various strings,
> > while `iso-2022-cn-gb' encodes same charcter to same string.
> >
> > (mapcar (lambda (cs) (encode-coding-string
> > (propertize "\x4e00" 'charset cs)
> > 'iso-2022-7bit))
> > '(chinese-gb2312 japanese-jisx0208 korean-ksc5601
> > chinese-cns11643-1))
> > =>("\e$AR;\e(B"
> > "\e$B0l\e(B"
> > "\e$(Cli\e(B"
> > "\e$(GD!\e(B")
> >
> > (mapcar (lambda (cs) (encode-coding-string
> > (propertize "\x4e00" 'charset cs)
> > 'iso-2022-cn-gb))
> > '(chinese-gb2312 japanese-jisx0208 korean-ksc5601
> > chinese-cns11643-1))
> > =>("\e$AR;\e(B"
> > "\e$AR;\e(B"
> > "\e$AR;\e(B"
> > "\e$AR;\e(B")
> >
> > `encode-hz-region' expects `chinese-gb2312' characters are encoded
> > with "\e$A" sequences, and replaces them to "~{".
>
> I understand, but as I said, I think this is by design, and should not
> be changed. However, maybe I'm missing something, so I'll CC
> Handa-san and ask him to comment on this proposal and the issue in
> general.
- bug#23814: 24.5; bug of hz coding-system,
Eli Zaretskii <=