GNU bug report logs - #66338
30.0.50; grep-commnd set and using an old fish results in empty Copyright files

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From: Michael Albinus <michael.albinus <at> gmx.de>
To: 66338 <at> debbugs.gnu.org
Cc: alex <at> alexschroeder.ch, eliz <at> gnu.org, dmitry <at> gutov.dev
Subject: bug#66338: 30.0.50; grep-commnd set and using an old fish results in empty Copyright files
Date: Thu, 05 Oct 2023 12:27:26 +0200

Alex Schroeder via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs <at> gnu.org> writes:

Hi Alex,

>> So Emacs expects this variable to point to a shell that Emacs can use
>> to run programs, not your interactive shell.  If you want a different
>> shell to be used in interactive shell sessions, such as "M-x shell",
>> then you should use the variable explicit-shell-file-name to point to
>> that other shell (in your case, fish).
>
> I understand that this is what Emacs expects. It seems to me that other
> parts of a user’s system might go against this expectation, however. The
> man page for login(1) says this, for example:
>
>        Your user and group ID will be set according to their values in
>        the /etc/passwd file. The value for $HOME, $SHELL, $PATH,
>        $LOGNAME, and $MAIL are set according to the appropriate fields
>        in the password entry. Ulimit, umask and nice values may also be
>        set according to entries in the GECOS field.
>
> That is to say, if a users runs chsh(1) and decides to use fish, then
> SHELL is set to fish, it is inherited to all processes, and Emacs
> breaks.

You could always add '(setenv "SHELL" "/bin/sh")' to your Emacs init file.

Best regards, Michael.

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