GNU bug report logs - #11208
23.4; shell-command-on-region does not {de,en}code as documented

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Gustav Hållberg <gustav <at> gmail.com>
Subject: bug#11208: closed (Re: bug#11208: 23.4; shell-command-on-region
 does not {de,en}code as documented)
Date: Mon, 09 Apr 2012 17:02:02 +0000

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Your bug report

#11208: 23.4; shell-command-on-region does not {de,en}code as documented

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 11208 <at> debbugs.gnu.org.

-- 
11208: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11208
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Gustav Hållberg <gustav <at> gmail.com>
Cc: 11208-done <at> debbugs.gnu.org
Subject: Re: bug#11208: 23.4;
	shell-command-on-region does not {de,en}code as documented
Date: Mon, 09 Apr 2012 19:58:50 +0300

> Date: Mon, 9 Apr 2012 13:09:07 +0200
> From: Gustav Hållberg <gustav <at> gmail.com>
> 
> shell-command-on-region (M-|) does not do the {de,en}coding of I/O to the
> process as documented.
> 
> It says (if I read it correctly) that it will use buffer-file-coding-system
> (at least unless coding-system-for-{read,write} are set) for output to and
> input from (if doing substitution with a prefix argument) the process.
> 
> However, it "just" calls call-process-region which will use
> default-process-coding-system rather than buffer-file-coding-system.

Thanks, I made the doc string match the implementation.

The fix is committed as revision 107794 on the emacs-24 branch, and
will be in Emacs 24.1.

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From: Gustav Hållberg <gustav <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.4; shell-command-on-region does not {de,en}code as documented
Date: Mon, 9 Apr 2012 13:09:07 +0200

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shell-command-on-region (M-|) does not do the {de,en}coding of I/O to the
process as documented.

It says (if I read it correctly) that it will use buffer-file-coding-system
(at least unless coding-system-for-{read,write} are set) for output to and
input from (if doing substitution with a prefix argument) the process.

However, it "just" calls call-process-region which will use
default-process-coding-system rather than buffer-file-coding-system.

To try, 'emacs -q', switch to an empty buffer, and:

  C-x RET f iso-8859-7 RET C-SPC C-u M-| echo -e '\0245' RET

This does not insert a drachma sign.

However, if you run (setq default-process-coding-system '(iso-8859-7
iso-8859-7)) first, it does indeed produce a drachma.

Output encoding works the same way.

- Gustav

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