Re: $GIT_CONFIG should either apply to all commands, or none at all

[Junio C Hamano <gitster@pobox.com>]

Jonathan Nieder <jrnieder@gmail.com> writes:

> Yep.  One possibility would be to do something like the following (A):
>
>  1) advertise in the git-config(1) manpage that the GIT_CONFIG
>     environment variable only affects the behavior of the 'git config'
>     command
>
>  2) introduce an environment variable GIT_I_AM_PORCELAIN.  (If doing
>     this, we could come up with a better name, but this is just an
>     illustration.)  Set and export that envvar in git-sh-setup.sh.
>     When that environment variable is set, make git-config stop paying
>     attention to GIT_CONFIG.
>
>     That way, git commands that happen to be scripts would not be
>     affected by the GIT_CONFIG setting any more.

At the places you plan to update porcelains to set and export
GIT_I_AM_PORCELAIN, you could unset GIT_CONFIG if set.  Would that
achieve the same goal?

And you can stop there without doing 3 or 4, no?