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bug#11421: call-process behavior wrt. to read only buffers depends on co
From: |
Rob Browning |
Subject: |
bug#11421: call-process behavior wrt. to read only buffers depends on coding system for read operations |
Date: |
Sun, 06 May 2012 11:06:26 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) |
(If possible, please preserve the 651420-forwarded address in any replies.)
It appears that depending on the LOCALE setting, Emacs 23.4 may or may
not signal a "buffer is read-only" error. At least here, this can be
demonstrated as follows.
Save to ./test.el:
(let ((buf (get-buffer-create "xxx")))
(with-current-buffer buf
(compilation-mode))
(let ((coding-system-for-read 'iso-latin-1-unix))
(condition-case err
(progn
(call-process "/bin/cat" "/proc/cpuinfo" buf t)
(message "iso-latin-1-unix: No call-process error"))
(error
(message "iso-latin-1-unix: call-process error: %s %s"
(car err) (cdr err)))))
(let ((coding-system-for-read 'utf-8-unix))
(condition-case err
(progn
(call-process "/bin/cat" "/proc/cpuinfo" buf t)
(message "utf-8-unix: No call-process error"))
(error
(message "utf-8-unix: call-process error: %s %s"
(car err) (cdr err))))))
Run:
emacs -q --no-site-file -batch -l ./test.el
which should produce something like this:
iso-latin-1-unix: call-process error: buffer-read-only (xxx)
utf-8-unix: No call-process error
Additional information may be found here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651420
Thanks
--
Rob Browning
rlb @defaultvalue.org and @debian.org
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4
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