From: Junio C Hamano <gitster@pobox.com>
To: "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, Ramsay Jones <ramsay@ramsayjones.plus.com>,
Duy Nguyen <pclouds@gmail.com>, Johannes Sixt <j6t@kdbg.org>,
Jeff King <peff@peff.net>,
Eric Sunshine <sunshine@sunshineco.com>,
Johannes Schindelin <johannes.schindelin@gmx.de>
Subject: Re: [PATCH v2 0/2] mingw: handle absolute paths in expand_user_path()
Date: Thu, 01 Jul 2021 10:42:39 -0700 [thread overview]
Message-ID: <xmqq1r8irkvk.fsf@gitster.g> (raw)
In-Reply-To: <pull.66.v2.git.1625155388.gitgitgadget@gmail.com> (Johannes Schindelin via GitGitGadget's message of "Thu, 01 Jul 2021 16:03:05 +0000")
"Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
writes:
> In Git for Windows, we ran with a patch "in production" for quite a while
> where paths starting with a slash (i.e. looking like Unix paths, not like
> Windows paths) were interpreted as being relative to the runtime prefix,
> when expanded via expand_user_path().
>
> This was sent to the Git mailing list as a discussion starter, and it was
> pointed out that this is neither portable nor unambiguous.
>
> After the dust settled, I thought about the presented ideas for a while
> (quite a while...), and ended up with the following: any path starting with
> <RUNTIME-PREFIX>/ is expanded. This is ambiguous because it could be a valid
> path. But then, it is unlikely, and if someone really wants to specify such
> a path, it is easy to slap a ./ in front and they're done.
I just went back to briefly scan the discussion in late 2018.
I think the rough consensus back then was that
* It indeed is a problem that there is no syntax for users of
"relocatable Git" to use to point at things that come as part of
the "relocatable Git" package.
* A change to expand_user_path() would be too broad, it makes sense
for this feature to be in git_config_pathname();
* We need to get the syntax right.
As to the last item, there were a handful of choices raised:
- Use "~~"--the downside is that this is not extensible. Use
"~runtime-prefix/" would be a better choice (the likelyhood of
<RUNTIME-PREFIX>, $RUNTIME_PREFIX, and any other random choice
happens to be used as a valid directory name is just as slim as
the likelyhood of "runtime-prefix" used as a valid username).
- "$RUNTIME_PREFIX" to make it read like a variable---the downside
was that it looked TOO MUCH like a variable and risked user
confusion (e.g. it may be upsetting that "$HOME/.gitconfig" is
not expanded like "~/.gitconfig" is).
- %(RUNTIME-PREFIX) to make it similar to how Git replaces various
tokens that are understood only in the context of Git.
- <RUNTIME-PREFIX>---the downside is that this is an unnecessary
new syntax we do not have to introduce. If <RUNTIME-PREFIX> is
unlikely to be used as a valid directory name, %(RUNTIME-PREFIX)
is just as unlikely.
There might have been other ideas floated back then. I have to say
that the one you chose in this round is the least favourite of mine,
and if you consulted me privately before redoing this round, I would
probably have said %(RUNTIME_PREFIX) would make the most sense among
the candidates.
Thanks.
next prev parent reply other threads:[~2021-07-01 17:42 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-06 14:53 [PATCH 0/1] mingw: handle absolute paths in expand_user_path() Johannes Schindelin via GitGitGadget
2018-11-06 14:53 ` [PATCH 1/1] " Johannes Schindelin via GitGitGadget
2018-11-06 15:54 ` Ramsay Jones
2018-11-06 16:10 ` Ramsay Jones
2018-11-06 18:27 ` Duy Nguyen
2018-11-07 1:21 ` Junio C Hamano
2018-11-07 11:19 ` Johannes Schindelin
2018-11-07 17:42 ` Ramsay Jones
2018-11-08 0:16 ` Junio C Hamano
2018-11-08 13:04 ` Johannes Schindelin
2018-11-08 14:43 ` Junio C Hamano
2018-11-08 15:39 ` Johannes Schindelin
2018-11-09 2:05 ` Joseph Moisan
2018-11-09 10:21 ` Jeff King
2018-11-06 18:24 ` Duy Nguyen
2018-11-07 11:19 ` Johannes Schindelin
2018-11-06 21:32 ` Johannes Sixt
2018-11-07 11:23 ` Johannes Schindelin
2018-11-07 18:52 ` Johannes Sixt
2018-11-07 20:41 ` Jeff King
2018-11-07 21:36 ` Johannes Sixt
2018-11-07 22:03 ` Jeff King
2018-11-08 0:30 ` Junio C Hamano
2018-11-08 1:18 ` Jeff King
2018-11-08 3:26 ` Junio C Hamano
2018-11-08 13:11 ` Johannes Schindelin
2018-11-08 14:25 ` Duy Nguyen
2018-11-08 15:45 ` Johannes Schindelin
2018-11-08 17:40 ` Eric Sunshine
2018-11-09 10:19 ` Jeff King
2018-11-09 16:16 ` Duy Nguyen
2018-11-12 3:03 ` Junio C Hamano
2018-11-08 14:47 ` Junio C Hamano
2018-11-08 15:46 ` Johannes Schindelin
2021-07-01 16:03 ` [PATCH v2 0/2] " Johannes Schindelin via GitGitGadget
2021-07-01 16:03 ` [PATCH v2 1/2] tests: exercise the RUNTIME_PREFIX feature Johannes Schindelin via GitGitGadget
2021-07-01 16:03 ` [PATCH v2 2/2] expand_user_path(): support specifying paths relative to the runtime prefix Johannes Schindelin via GitGitGadget
2021-07-01 17:42 ` Junio C Hamano [this message]
2021-07-24 22:06 ` [PATCH v3 0/5] mingw: handle absolute paths in expand_user_path() Johannes Schindelin via GitGitGadget
2021-07-24 22:06 ` [PATCH v3 1/5] tests: exercise the RUNTIME_PREFIX feature Johannes Schindelin via GitGitGadget
2021-07-24 22:06 ` [PATCH v3 2/5] expand_user_path(): remove stale part of the comment Johannes Schindelin via GitGitGadget
2021-07-24 22:06 ` [PATCH v3 3/5] expand_user_path(): clarify the role of the `real_home` parameter Johannes Schindelin via GitGitGadget
2021-07-24 22:06 ` [PATCH v3 4/5] Use a better name for the function interpolating paths Johannes Schindelin via GitGitGadget
2021-07-26 22:05 ` Junio C Hamano
2021-07-27 7:57 ` Fabian Stelzer
2021-07-27 22:56 ` Junio C Hamano
2021-07-28 0:14 ` Junio C Hamano
2021-07-28 0:39 ` Junio C Hamano
2021-07-28 5:43 ` Junio C Hamano
2021-07-28 8:18 ` Fabian Stelzer
2021-07-28 17:08 ` Junio C Hamano
2021-07-24 22:06 ` [PATCH v3 5/5] interpolate_path(): allow specifying paths relative to the runtime prefix Johannes Schindelin via GitGitGadget
2021-07-26 17:56 ` [PATCH v3 0/5] mingw: handle absolute paths in expand_user_path() Junio C Hamano
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