From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.9 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id B2BDC1F61A for ; Thu, 19 Mar 2020 16:51:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728047AbgCSQvu (ORCPT ); Thu, 19 Mar 2020 12:51:50 -0400 Received: from cloud.peff.net ([104.130.231.41]:44074 "HELO cloud.peff.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1727146AbgCSQvu (ORCPT ); Thu, 19 Mar 2020 12:51:50 -0400 Received: (qmail 26153 invoked by uid 109); 19 Mar 2020 16:51:50 -0000 Received: from Unknown (HELO peff.net) (10.0.1.2) by cloud.peff.net (qpsmtpd/0.94) with SMTP; Thu, 19 Mar 2020 16:51:50 +0000 Authentication-Results: cloud.peff.net; auth=none Received: (qmail 28893 invoked by uid 111); 19 Mar 2020 17:01:29 -0000 Received: from coredump.intra.peff.net (HELO sigill.intra.peff.net) (10.0.0.2) by peff.net (qpsmtpd/0.94) with (TLS_AES_256_GCM_SHA384 encrypted) ESMTPS; Thu, 19 Mar 2020 13:01:29 -0400 Authentication-Results: peff.net; auth=none Date: Thu, 19 Mar 2020 12:51:49 -0400 From: Jeff King To: Eric Wong Cc: Timothee Cour , git@vger.kernel.org Subject: Re: git makes it impossible to ignore or override global gitconfig, needs `GITCONFIGFILE` Message-ID: <20200319165149.GA4074934@coredump.intra.peff.net> References: <20200319064407.GA26408@dcvr> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200319064407.GA26408@dcvr> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org On Thu, Mar 19, 2020 at 06:44:07AM +0000, Eric Wong wrote: > Timothee Cour wrote: > > git makes it impossible to ignore global gitconfig. This is > > essentially what's being asked here: > > https://stackoverflow.com/questions/23400449/how-to-make-git-temporarily-ignore-gitconfig > > > > ## proposal: > > add an environment variable (like for tig and other programs), eg: > > `GITCONFIGFILE=~/.gitconfig_temp git diff` > > seems like an easy change that would make it easy for users to ignore > > or override their gitconfig > > You can use GIT_CONFIG for that, and there's also > GIT_CONFIG_NOSYSTEM. They're both documented in the > git-config(5) manpage. I don't think $GIT_CONFIG is what Timothee whats. It only affects the git-config command, not config lookup in other programs. And it overrides _all_ config lookup, as if "git config --file" had been used. There's no variable to suppress just the user-level gitconfig. The usual technique (that we use in the test scripts) is to point $HOME somewhere else, but that may affect other programs. I wouldn't be opposed to GIT_CONFIG_NOGLOBAL if there's a use case, but it sounds like the desire is to actually provide new config. That can also be done for specific options with "git -c". Under the hood that is using GIT_CONFIG_PARAMETERS in the environment; you can set it individually, but note that it's a little picky about quoting (the individual keys are shell-quoted, but it insists that there is an outer layer of single-quotes, even if they weren't necessary; I wouldn't be opposed to making it more friendly). You can see what it produces like this: git -c alias.dump='!echo "$GIT_CONFIG_PARAMETERS"' dump -Peff