GNU bug report logs - #34815
26.1; read-shell-command globally sets comint-input-autoexpand to 'history

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#34815: closed (26.1; read-shell-command globally sets
 comint-input-autoexpand to 'history)
Date: Fri, 15 Mar 2019 09:17:01 +0000

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Your message dated Fri, 15 Mar 2019 11:16:28 +0200
with message-id <834l841or7.fsf <at> gnu.org>
and subject line Re: bug#34815: 26.1; read-shell-command globally sets comint-input-autoexpand to 'history
has caused the debbugs.gnu.org bug report #34815,
regarding 26.1; read-shell-command globally sets comint-input-autoexpand to 'history
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: jackkamm <at> gmail.com
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1;
 read-shell-command globally sets comint-input-autoexpand to 'history
Date: Mon, 11 Mar 2019 11:08:42 -0700

Calling "shell-command", "async-shell-command", or any other command
calling "read-shell-command", globally sets the variable
"comint-input-autoexpand" to 'history. "comint-input-autoexpand" is
supposed to be a buffer-local variable with a default value of nil, and
setting it globally can interfere with other shells that use the "!"
symbol, e.g. the IPython shell.

To reproduce, first "emacs -Q", then check that
"comint-input-autoexpand" has value nil. Then type:
"M-!", "echo foo", "RET".
Then check that comint-input-autoexpand has been set to 'history.

jabranham on the freenode #emacs channel helped me track down and
consistently reproduce this bug.

--Jack

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Jack Kamm <jackkamm <at> gmail.com>
Cc: 34815-done <at> debbugs.gnu.org
Subject: Re: bug#34815: 26.1;
 read-shell-command globally sets comint-input-autoexpand to 'history
Date: Fri, 15 Mar 2019 11:16:28 +0200

> From: Jack Kamm <jackkamm <at> gmail.com>
> Cc: 34815 <at> debbugs.gnu.org
> Date: Mon, 11 Mar 2019 13:52:15 -0700
> 
> Yes, replacing setq with setq-local seems to fix the issue.

Thanks, I installed such a change on the emacs-26 branch.

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