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

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From: Gustav Hållberg <gustav <at> gmail.com>
To: 11208 <at> debbugs.gnu.org
Subject: bug#11208: 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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