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From: Junio C Hamano <gitster@pobox.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Jeff King <peff@peff.net>,
	git@vger.kernel.org, David Aguilar <davvid@gmail.com>,
	Dennis Kaarsemaker <dennis@kaarsemaker.net>
Subject: Re: [PATCH v3 1/2] difftool: add a skeleton for the upcoming builtin
Date: Mon, 05 Dec 2016 10:37:39 -0800	[thread overview]
Message-ID: <xmqqy3zu43yk.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1612051126320.117539@virtualbox> (Johannes Schindelin's message of "Mon, 5 Dec 2016 11:36:19 +0100 (CET)")

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> Seriously, do you really think it is a good idea to have
> git_config_get_value() *ignore* any value in .git/config?

When we do not know ".git/" directory we see is the repository we
were told to work on, then we should ignore ".git/config" file.  So
allowing git_config_get_value() to _ignore_ ".git/config" before the
program calls setup_git_directory() does have its uses.

But I agree that "difftool.useBuiltin" that flips between two
implementations is a different use case than the above.  Both
implementations eventually want to work on ".git/" and would
want to read from ".git/config".

> We need to fix this.

I have a feeling that "environment modifications that cannot be
undone" we used as the rationale in 73c2779f42 ("builtin-am:
implement skeletal builtin am", 2015-08-04) might be overly
pessimistic and in order to implement undo_setup_git_directory(),
all we need to do may just be matter of doing a chdir(2) back to
prefix and unsetting GIT_PREFIX environment, but I haven't looked
into details of the setup sequence recently.


  reply	other threads:[~2016-12-05 18:37 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-22 17:01 [PATCH 0/2] Show Git Mailing List: a builtin difftool Johannes Schindelin
2016-11-22 17:01 ` [PATCH 1/2] difftool: add the builtin Johannes Schindelin
2016-11-23  8:08   ` David Aguilar
2016-11-23 11:34     ` Johannes Schindelin
2016-11-22 17:01 ` [PATCH 2/2] difftool: add a feature flag for the builtin vs scripted version Johannes Schindelin
2016-11-23 14:51   ` Dennis Kaarsemaker
2016-11-23 17:29     ` Johannes Schindelin
2016-11-23 17:40       ` Junio C Hamano
2016-11-23 18:18         ` Junio C Hamano
2016-11-23 19:55           ` Johannes Schindelin
2016-11-23 20:04             ` Junio C Hamano
2016-11-23 22:01       ` Johannes Schindelin
2016-11-23 22:03 ` [PATCH v2 0/1] Show Git Mailing List: a builtin difftool Johannes Schindelin
2016-11-23 22:03   ` [PATCH v2 1/1] difftool: add the builtin Johannes Schindelin
2016-11-23 22:25     ` Junio C Hamano
2016-11-23 22:30       ` Junio C Hamano
2016-11-24 10:38         ` Johannes Schindelin
2016-11-24 20:55   ` [PATCH v3 0/2] Show Git Mailing List: a builtin difftool Johannes Schindelin
2016-11-24 20:55     ` [PATCH v3 1/2] difftool: add a skeleton for the upcoming builtin Johannes Schindelin
2016-11-24 21:08       ` Jeff King
2016-11-24 21:56         ` Johannes Schindelin
2016-11-25  3:18           ` Jeff King
2016-11-25 11:05             ` Johannes Schindelin
2016-11-25 17:19               ` Jeff King
2016-11-25 17:41                 ` Johannes Schindelin
2016-11-25 17:47                   ` Jeff King
2016-11-26 12:22                     ` Johannes Schindelin
2016-11-26 16:19                       ` Jeff King
2016-11-26 13:01                         ` Johannes Schindelin
2016-11-27 16:50                           ` Jeff King
2016-11-28 17:06                             ` Junio C Hamano
2016-11-28 17:34                               ` Johannes Schindelin
2016-11-28 19:27                                 ` Junio C Hamano
2016-11-29 20:36                                   ` Johannes Schindelin
2016-11-29 20:49                                     ` Jeff King
2016-11-30 12:30                                       ` Johannes Schindelin
2016-11-30 12:35                                         ` Jeff King
2016-11-29 20:55                                     ` Junio C Hamano
2016-11-30 12:30                                       ` Johannes Schindelin
2016-12-01 23:33                                         ` Junio C Hamano
2016-12-05 10:36                                           ` Johannes Schindelin
2016-12-05 18:37                                             ` Junio C Hamano [this message]
2016-12-06 13:16                                               ` Johannes Schindelin
2016-12-06 13:36                                                 ` Jeff King
2016-12-06 14:48                                                   ` Johannes Schindelin
2016-12-06 15:09                                                     ` Jeff King
2016-12-06 18:22                                                       ` Stefan Beller
2016-12-06 18:35                                                         ` Jeff King
2017-01-18 22:38                                                           ` Brandon Williams
2016-11-30 16:02                                 ` Jakub Narębski
2016-11-30 18:39                                   ` Junio C Hamano
2016-11-24 20:55     ` [PATCH v3 2/2] difftool: implement the functionality in the builtin Johannes Schindelin
2016-11-25 21:24       ` Jakub Narębski
2016-11-27 11:10         ` Johannes Schindelin
2016-11-27 11:20           ` Jakub Narębski
2017-01-02 16:16     ` [PATCH v4 0/4] Show Git Mailing List: a builtin difftool Johannes Schindelin
2017-01-02 16:22       ` [PATCH v4 1/4] Avoid Coverity warning about unfree()d git_exec_path() Johannes Schindelin
2017-01-03 20:11         ` Stefan Beller
2017-01-03 21:33           ` Johannes Schindelin
2017-01-04 18:09             ` Stefan Beller
2017-01-04  1:13           ` Jeff King
2017-01-09  1:25           ` Junio C Hamano
2017-01-09  6:00             ` Jeff King
2017-01-09  7:49             ` Johannes Schindelin
2017-01-09 19:21             ` Stefan Beller
2017-01-02 16:22       ` [PATCH v4 2/4] difftool: add a skeleton for the upcoming builtin Johannes Schindelin
2017-01-02 16:22       ` [PATCH v4 3/4] difftool: implement the functionality in the builtin Johannes Schindelin
2017-01-02 16:24       ` [PATCH v4 4/4] t7800: run both builtin and scripted difftool, for now Johannes Schindelin
2017-01-09  1:38         ` Junio C Hamano
2017-01-09  7:56           ` Johannes Schindelin
2017-01-09  9:46             ` Junio C Hamano
2017-01-17 15:54       ` [PATCH v5 0/3] Turn the difftool into a builtin Johannes Schindelin
2017-01-17 15:54         ` [PATCH v5 1/3] difftool: add a skeleton for the upcoming builtin Johannes Schindelin
2017-01-17 15:55         ` [PATCH v5 2/3] difftool: implement the functionality in the builtin Johannes Schindelin
2017-01-17 15:55         ` [PATCH v5 3/3] Retire the scripted difftool Johannes Schindelin
2017-01-17 21:46           ` Junio C Hamano
2017-01-18 12:33             ` Johannes Schindelin
2017-01-18 19:15               ` Junio C Hamano
2017-01-19 16:30                 ` Johannes Schindelin
2017-01-19 17:56                   ` Junio C Hamano
2017-01-19 20:32                     ` Johannes Schindelin
2017-01-17 21:31         ` [PATCH v5 0/3] Turn the difftool into a builtin Junio C Hamano
2017-01-19 20:30         ` [PATCH v6 " Johannes Schindelin
2017-01-19 20:30           ` [PATCH v6 1/3] difftool: add a skeleton for the upcoming builtin Johannes Schindelin
2017-01-19 20:30           ` [PATCH v6 2/3] difftool: implement the functionality in the builtin Johannes Schindelin
2017-01-19 20:30           ` [PATCH v6 3/3] Retire the scripted difftool Johannes Schindelin

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