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From: Eli Zaretskii <eliz@gnu.org>
To: eggert@cs.ucla.edu
Cc: oub@mat.ucm.es, dgutov@yandex.ru, 23595@debbugs.gnu.org
Subject: bug#23595: 25.1.50; file with chinese/japanse chars, vc-diff fails (HG, Git, RCS)
Date: Tue, 24 May 2016 18:36:59 +0300	[thread overview]
Message-ID: <83k2ij4gdg.fsf@gnu.org> (raw)
In-Reply-To: <83shx841qr.fsf@gnu.org> (message from Eli Zaretskii on Tue, 24 May 2016 05:40:44 +0300)

> Date: Tue, 24 May 2016 05:40:44 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: oub@mat.ucm.es, dgutov@yandex.ru, 23595@debbugs.gnu.org
> 
> > It worked for me in the Bug#23595 test case, with Git configured with 
> > utf16<->utf8 filters as I described. However, it reintroduces a bug when 
> > the version-controlled uses ISO-2022-JP. If I make a trivial change to 
> > etc/HELLO, for example, the patch can cause vc-diff to display mojibake, 
> > as the output of "git diff" uses ISO0-2022-JP but vc-diff decodes it as 
> > UTF-8. Although this is the same mojibake that Emacs 24.5 generates so 
> > the behavior is not a regression from 24.5, it is a regression from 
> > current emacs-25.
> 
> For some reason I don't quite understand, iso-2022-jp fails the
> ascii-compatible-p test.

OK, I understand that now.  ascii-compatible-p is not the right test,
the right one is mime-text-unsuitable-p; and the test should be
reversed, i.e. this:

  (coding-system-get CODING-SYSTEM :mime-text-unsuitable-p)

should return nil for CODING-SYSTEM to be usable.





  reply	other threads:[~2016-05-24 15:36 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-21 13:02 bug#23595: 25.1.50; file with chinese/japanse chars, vc-diff fails (HG, Git, RCS) Uwe Brauer
2016-05-23 11:52 ` Dmitry Gutov
2016-05-23 12:41   ` Uwe Brauer
2016-05-23 13:17     ` Dmitry Gutov
2016-05-23 16:52       ` Eli Zaretskii
2016-05-23 16:51     ` Eli Zaretskii
2016-05-23 16:48   ` Eli Zaretskii
2016-05-23 17:00     ` Uwe Brauer
2016-05-23 17:31       ` Eli Zaretskii
2016-05-23 20:37         ` Uwe Brauer
2016-05-23 21:01           ` Lars Ingebrigtsen
2016-05-24  2:33           ` Eli Zaretskii
2016-05-23 21:02     ` Dmitry Gutov
2016-05-23 22:16       ` Paul Eggert
2016-05-23 22:28         ` Dmitry Gutov
2016-05-24  0:07           ` Paul Eggert
2016-05-24  9:47             ` Dmitry Gutov
2016-05-25  6:51               ` Paul Eggert
2016-05-25 12:44                 ` Dmitry Gutov
2016-05-24  2:40         ` Eli Zaretskii
2016-05-24 15:36           ` Eli Zaretskii [this message]
2016-05-24  2:36       ` Eli Zaretskii
2016-05-24  9:35         ` Dmitry Gutov
2016-05-24 15:40           ` Eli Zaretskii
2016-05-25  0:09             ` Dmitry Gutov
2016-05-25 16:22               ` Eli Zaretskii
2016-05-25 23:21                 ` Dmitry Gutov
2016-05-26 10:44                   ` Uwe Brauer
2016-05-26 15:35                   ` Eli Zaretskii
2016-06-19 19:09                     ` Dmitry Gutov
2016-05-25  6:19           ` Paul Eggert
2016-05-25 16:27             ` Eli Zaretskii
2016-05-25  6:19         ` Paul Eggert
2016-05-25 16:26           ` Eli Zaretskii
2016-05-23 17:40 ` Paul Eggert
2016-05-23 18:15   ` Eli Zaretskii

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