GNU bug report logs - #1082
23.0.60; read-char unexpectedly halts execution of script

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Package: emacs;

Reported by: Markus Triska <markus.triska <at> gmx.at>

Date: Sat, 4 Oct 2008 18:05:04 UTC

Severity: normal

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

Full log

Message #32 received at 1082 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Markus Triska <markus.triska <at> gmx.at>
To: Andreas Schwab <schwab <at> suse.de>
Cc: 1082 <at> debbugs.gnu.org
Subject: Re: bug#1082: 23.0.60; read-char unexpectedly halts execution of script
Date: Tue, 07 Oct 2008 00:17:02 +0200

Andreas Schwab <schwab <at> suse.de> writes:

> In non-interactive mode we always want restartable syscalls, since
> keyboard input goes through stdio (SYNC_INPUT makes no difference here).
> I've checked in a fix.

Thank you, it fixes this problem for me. Could process output also be
handled, as in interactive use? E.g., M-x eval-region on the forms:

   (defun bc-filter (proc string)
     (message "%s" string))

   (message "starting")
   (setq bc (start-process "bc" nil "/usr/bin/bc"))
   (set-process-filter bc 'bc-filter)

   (while t
     (let ((char (read-char nil nil 0.1)))
       (when char
         (message "char: %s" char))))

processes the output of bc, and shows:

   starting
   bc 1.06
   Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
   This is free software with ABSOLUTELY NO WARRANTY.
   For details type `warranty'.

Whereas in "emacs --script" mode, this output is not shown.
This bug report was last modified 16 years and 294 days ago.

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