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From: Jeff King <peff@peff•net>
To: David Turner <dturner@twopensource•com>
Cc: Junio C Hamano <gitster@pobox•com>,
	git mailing list <git@vger•kernel.org>
Subject: Re: RFC: git cat-file --follow-symlinks?
Date: Wed, 29 Apr 2015 19:11:50 -0400	[thread overview]
Message-ID: <20150429231150.GB3887@peff.net> (raw)
In-Reply-To: <1430346576.14907.40.camel@ubuntu>

On Wed, Apr 29, 2015 at 03:29:36PM -0700, David Turner wrote:

> Overall, I agree.  I think the disadvantages are somewhat overstated.
> 
> As I said above, I don't think the cwd is a problem.  The output for
> symlinks which point outside the repo should be absolute (in the case of
> absolute symlinks), or relative to the repo root (for relative
> symlinks).  In other words, if my repo contains:
> foo/bar -> ../../baz
> then the output[1] would be 
> symlink 6
> ../baz
> 
> I can't think of any other output that would be reasonable here, but
> maybe there's something I don't understand.

Yeah, I agree if you let git punt on leaving the filesystem, most of the
complicated problems go away. It still feels a bit more magical than I
expect out of cat-file, and there are still corner cases (e.g., do we do
cycle detection? Or just have a limit to the recursion depth?)

And if you are punting on some cases, I think you'd still want to be
able to report on the symlinks you couldn't resolve (e.g., because they
went out of tree, pointed to non-existent files, or caused cycles). So
it seems like %(intreemode) is a good first step, because it lets you
express that (and more).

And then you could implement --follow-symlinks on top of that; it can't
catch all cases, but you've left callers with an escape hatch to do
their own resolution if they want, without having to implement a new
syntax for it.

-Peff

  reply	other threads:[~2015-04-29 23:11 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-29 20:57 RFC: git cat-file --follow-symlinks? David Turner
2015-04-29 21:16 ` Jonathan Nieder
2015-04-29 21:24   ` David Turner
2015-04-29 21:17 ` Junio C Hamano
2015-04-29 21:30   ` David Turner
2015-04-29 21:48     ` Jeff King
2015-04-29 22:19       ` Jonathan Nieder
2015-04-29 23:05         ` Jeff King
2015-04-29 22:29       ` David Turner
2015-04-29 23:11         ` Jeff King [this message]
2015-04-30  0:37           ` Jeff King
2015-04-30  1:06             ` David Turner
2015-04-30  1:16               ` Jeff King
2015-04-30  1:31                 ` Junio C Hamano
2015-04-30  3:18                   ` Jeff King
2015-04-30  1:45                 ` David Turner
2015-04-30  3:37                   ` Jeff King
2015-04-30  5:34                     ` Junio C Hamano
2015-04-30  8:12                       ` Michael Haggerty
2015-04-30 18:03                         ` David Turner
2015-04-30 18:19                           ` Junio C Hamano
2015-04-30 18:28                             ` David Turner
2015-04-30 18:32                               ` Jeff King
2015-04-30 18:44                                 ` David Turner
2015-04-30 18:49                                   ` Jeff King
2015-04-30 19:00                                     ` David Turner
2015-04-30 19:10                                       ` Jeff King
2015-04-30 19:17                                         ` David Turner
2015-04-30 10:04                     ` Andreas Schwab
2015-04-30 18:27                       ` Jeff King
2015-04-30 19:18                         ` Junio C Hamano
2015-04-30 19:25                     ` David Turner
2015-04-30 19:46                       ` Junio C Hamano
2015-04-30 19:51                         ` Jeff King
2015-04-30 20:05                         ` Junio C Hamano
2015-05-01  3:29                     ` David Turner
2015-05-01  5:36                       ` Jeff King
2015-05-01 17:29                         ` David Turner
2015-05-01 20:11                           ` Jeff King
2015-05-01 21:09                             ` David Turner
2015-04-29 21:49     ` Junio C Hamano
2015-04-29 22:47       ` David Turner
2015-04-30  8:10 ` Michael Haggerty

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