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From: Junio C Hamano <gitster@pobox.com>
To: Brandon Williams <bmwill@google.com>
Cc: Stefan Beller <sbeller@google.com>,
	"git\@vger.kernel.org" <git@vger.kernel.org>,
	Jeff King <peff@peff.net>,
	Johannes Schindelin <johannes.schindelin@gmx.de>,
	Duy Nguyen <pclouds@gmail.com>
Subject: Re: [PATCH v3 2/5] setup: allow for prefix to be passed to git commands
Date: Fri, 17 Mar 2017 13:30:30 -0700	[thread overview]
Message-ID: <xmqqy3w363yx.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20170317192103.GE110341@google.com> (Brandon Williams's message of "Fri, 17 Mar 2017 12:21:03 -0700")

Brandon Williams <bmwill@google.com> writes:

> ...  I was being cautious with this patch since git didn't currently
> read GIT_PREFIX.

Ahh, I forgot about that.  Processes we spawn do expect GIT_PREFIX
to tell them where the original $cwd was and they also do expect
that "git" invoked by them would not be affected by GIT_PREFIX
environment variable.  So we cannot change that now.

If you recurse into sub-sub module, it is likely that you would want
to update the TOPLEVEL_PREFIX relative to that sub-sub module you
are descending into.

That probably also means that processes we spawn now need to also
pay attention to TOPLEVEL_PREFIX in addition to GIT_PREFIX, and we
should NOT re-export what we got from TOPLEVEL_PREFIX to GIT_PREFIX.
I.e. if a "git" process started from src/ subdirectory of the
superproject that goes into module/sub1/ submodule, top-level prefix
may export ../src/ to point at the original location, but the
process that is running in the submodule will be running at the root
level of the submodule working tree, so its prefix should be NULL or
"", no?

Adjusting pathspec and other file references on the caller's side,
instead of exporting toplevel-prefix to have them adjusted by the
callee, started to smell more and more like an easier/more correct
approach to me, but perhaps I haven't thought things deeply enough.

I dunno.


  reply	other threads:[~2017-03-17 20:30 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-24 23:50 [PATCH 0/5] recursing submodules with relative pathspec (grep and ls-files) Brandon Williams
2017-02-24 23:50 ` [PATCH 1/5] grep: illustrate bug when recursing with relative pathspec Brandon Williams
2017-02-26  9:53   ` Duy Nguyen
2017-02-27 18:14     ` Brandon Williams
2017-02-24 23:50 ` [PATCH 2/5] pathspec: add PATHSPEC_FROMROOT flag Brandon Williams
2017-02-25  0:31   ` Stefan Beller
2017-02-24 23:50 ` [PATCH 3/5] grep: fix bug when recuring with relative pathspec Brandon Williams
2017-02-28 21:04   ` Junio C Hamano
2017-03-02 18:00     ` Brandon Williams
2017-02-24 23:50 ` [PATCH 4/5] ls-files: illustrate bug when recursing " Brandon Williams
2017-02-24 23:51 ` [PATCH 5/5] ls-files: fix bug when recuring " Brandon Williams
2017-02-28 21:07   ` Junio C Hamano
2017-03-02 18:01     ` Brandon Williams
2017-02-27 17:52 ` [PATCH 0/5] recursing submodules with relative pathspec (grep and ls-files) Brandon Williams
2017-03-06 23:07 ` [RFC PATCH] grep: fix bug when recursing with relative pathspec Brandon Williams
2017-03-14 22:10 ` [PATCH v2 0/4] recursing submodules with relative pathspec (grep and ls-files) Brandon Williams
2017-03-14 22:10   ` [PATCH v2 1/4] grep: fix help text typo Brandon Williams
2017-03-14 22:49     ` Stefan Beller
2017-03-15  0:20       ` Brandon Williams
2017-03-14 22:10   ` [PATCH v2 2/4] setup: allow for prefix to be passed to git commands Brandon Williams
2017-03-14 22:28     ` Johannes Schindelin
2017-03-14 22:35       ` Brandon Williams
2017-03-14 22:10   ` [PATCH v2 3/4] grep: fix bug when recursing with relative pathspec Brandon Williams
2017-03-14 23:03     ` Stefan Beller
2017-03-14 22:11   ` [PATCH v2 4/4] ls-files: " Brandon Williams
2017-03-14 23:06     ` Stefan Beller
2017-03-15 17:02       ` Brandon Williams
2017-03-17 17:22   ` [PATCH v3 0/5] recursing submodules with relative pathspec (grep and ls-files) Brandon Williams
2017-03-17 17:22     ` [PATCH v3 1/5] grep: fix help text typo Brandon Williams
2017-03-17 17:22     ` [PATCH v3 2/5] setup: allow for prefix to be passed to git commands Brandon Williams
2017-03-17 19:07       ` Stefan Beller
2017-03-17 19:08         ` Brandon Williams
2017-03-17 19:10           ` Stefan Beller
2017-03-17 19:17             ` Brandon Williams
2017-03-17 19:17         ` Junio C Hamano
2017-03-17 19:21           ` Brandon Williams
2017-03-17 20:30             ` Junio C Hamano [this message]
2017-03-17 21:00               ` Brandon Williams
2017-03-17 21:25                 ` Junio C Hamano
2017-03-20 22:34                   ` Brandon Williams
2017-03-21 16:56                     ` Junio C Hamano
2017-03-28 23:58                     ` Stefan Beller
2017-03-17 17:22     ` [PATCH v3 3/5] grep: fix bug when recursing with relative pathspec Brandon Williams
2017-03-21 11:47       ` Duy Nguyen
2017-03-21 17:56         ` Junio C Hamano
2017-03-22 21:46         ` Brandon Williams
2017-03-17 17:22     ` [PATCH v3 4/5] ls-files: fix typo in variable name Brandon Williams
2017-03-17 17:22     ` [PATCH v3 5/5] ls-files: fix bug when recursing with relative pathspec Brandon Williams

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