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From: Per Lundberg <per.lundberg@hibox.tv>
To: Jacob Keller <jacob.keller@gmail.com>
Cc: "Duy Nguyen" <pclouds@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	"Git mailing list" <git@vger.kernel.org>,
	"jost@tcs.ifi.lmu.de" <jost@tcs.ifi.lmu.de>,
	"jjensen@workspacewhiz.com" <jjensen@workspacewhiz.com>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Matthieu Moy" <git@matthieu-moy.fr>,
	"drizzd@gmx.net" <drizzd@gmx.net>,
	"hellmuth@ira.uka.de" <hellmuth@ira.uka.de>,
	"kevin@sb.org" <kevin@sb.org>
Subject: Re: [RFC PATCH] Introduce "precious" file concept
Date: Tue, 27 Nov 2018 14:50:34 +0000	[thread overview]
Message-ID: <56ffc52f-644c-2c1d-6a16-c1005b064385@hibox.tv> (raw)
In-Reply-To: <CA+P7+xri1=peNpEiZCE802HwCXhojyp2BDvOR+6BBSoRtsZyzA@mail.gmail.com>

On 11/27/18 2:55 PM, Jacob Keller wrote:

> Personally, I would rather err on the side which requires the least
> interaction from users to avoid silently clobbering an ignored file.
> 
 > [...]
> 
> I don't like the idea of precious because it means people have to know
> and remember to opt in, and it's quite possible they will not do so
> until after they've lost real data.

I agree strongly with this personally; if we must choose between "might 
break automation" and "might delete non-garbage files", I would say the 
former is the lesser evil of the two.

But, if I had 10 000 000 servers set up using automated scripts that 
would break because of this, I might think differently. Quite likely so, 
in fact.

What are these automation scenarios _more specifically_? Junio or Brian, 
would you care to elaborate? Is it for build servers where you want "git 
clean -dfx" to always reset the working copy to a pristine state or are 
we talking about some other scenarios?

> I'd only have trashable apply in the case where it was implicit. i.e.
> git clean -fdx would still delete them, as this is an explicit
> operation that (hopefully?) users know will delete data.

This is one of the tougher calls, unfortunately.

If I was a user (which I am), and I was typing "git clean -dfx", what 
would I expect?

The help text (currently) states "-x   remove ignored files, too".

Would it be safe to assume that people would understand that "ignored 
_does not_ mean trashable when doing "git checkout some-ref" BUT it 
_does_ mean trashable in the "git clean -dfx" context"? I'm not so 
certain. It would be one of those perceived inconsistencies that would 
make people scream in anger because they _presumed_ that with the new 
"trashable" concept, "git clean -dfx" would no longer hit them in the leg.

And the other way around: if we change "git clean -dfx" to _not_ treat 
"ignored == trashable", it is likely to "hose automation" as it has been 
previously stated. People who might be using this syntax and _want_ it 
to remove ignored files would be upset, and rightfully so.

So in my POV, it's a tough decision between two, less-than-optimal 
alternatives.

But I would perhaps be able to live with the current semantics for "git 
clean -dfx" _as long as we update the help text_ so that "-x" indicates 
more clearly that non-trashable files can be deleted. It doesn't make 
things _worse_ than they currently are and if this is what it takes to 
get the trashable concept implemented and accepted by the community, 
it's a compromise I'd be willing to make.
--
Per Lundberg


  reply	other threads:[~2018-11-27 14:50 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-17  5:21 git merge, .gitignore, and silently overwriting untracked files Joshua Jensen
2010-08-17 19:33 ` Junio C Hamano
2010-08-18 23:39   ` [PATCH] optionally disable overwriting of ignored files Clemens Buchacher
2010-08-19 10:41     ` Jakub Narebski
2010-08-20 18:48       ` Clemens Buchacher
2010-08-20 19:01         ` Joshua Jensen
2010-08-20 20:35     ` Junio C Hamano
2010-08-21  8:05       ` Clemens Buchacher
2010-08-22  7:25         ` Junio C Hamano
2010-08-22  8:20           ` Clemens Buchacher
2010-10-09 22:39         ` Kevin Ballard
2010-08-21 13:23       ` Clemens Buchacher
2010-10-09 13:52       ` [PATCH 0/5] do not overwrite untracked files in leading path Clemens Buchacher
2010-10-09 13:52       ` [PATCH 1/5] t7607: use test_commit and test_must_fail Clemens Buchacher
2010-10-10  6:35         ` Jonathan Nieder
2010-10-10  8:35           ` [PATCH 1/5 v2] t7607: use test-lib functions and check MERGE_HEAD Clemens Buchacher
2010-10-13 21:33             ` Junio C Hamano
2010-10-13 21:59             ` Junio C Hamano
2010-10-09 13:52       ` [PATCH 2/5] t7607: add leading-path tests Clemens Buchacher
2010-10-09 19:14         ` Johannes Sixt
2010-10-10  8:38           ` [PATCH 2/5 v2] " Clemens Buchacher
2010-10-09 13:52       ` [PATCH 3/5] add function check_ok_to_remove() Clemens Buchacher
2010-10-13 21:43         ` Junio C Hamano
2010-10-09 13:52       ` [PATCH 4/5] lstat_cache: optionally return match_len Clemens Buchacher
2010-10-09 13:53       ` [PATCH 5/5] do not overwrite files in leading path Clemens Buchacher
2010-10-13 21:57         ` Junio C Hamano
2010-10-13 22:34           ` Clemens Buchacher
2010-10-15  6:48             ` Clemens Buchacher
2010-10-15 18:47               ` Junio C Hamano
2010-08-20 20:46     ` [PATCH] optionally disable overwriting of ignored files Junio C Hamano
2010-08-21  6:48       ` [PATCH v2] " Clemens Buchacher
2010-08-23  8:33     ` [PATCH] " Matthieu Moy
2010-08-31 18:44       ` Heiko Voigt
2010-08-23  9:37     ` Matthieu Moy
2010-08-23 13:56       ` Holger Hellmuth
2010-08-23 15:11         ` Clemens Buchacher
2010-08-23 15:57           ` Junio C Hamano
2010-08-24  7:28             ` Clemens Buchacher
2010-08-24 16:19               ` Junio C Hamano
2018-10-16  9:10       ` Ignored files being silently overwritten when switching branches Ævar Arnfjörð Bjarmason
2018-10-16 15:05         ` Duy Nguyen
2018-10-18  1:55           ` Junio C Hamano
2018-11-06 15:12 ` Checkout deleted semi-untracked file Ævar Arnfjörð Bjarmason
2018-11-11  9:52   ` [RFC PATCH] Introduce "precious" file concept Nguyễn Thái Ngọc Duy
2018-11-11 12:15     ` Bert Wesarg
2018-11-11 12:59     ` Junio C Hamano
2018-11-26 19:38     ` [PATCH v2 0/2] Precios files round two Nguyễn Thái Ngọc Duy
2018-11-26 19:38       ` [PATCH v2 1/2] Introduce "precious" file concept Nguyễn Thái Ngọc Duy
2018-11-26 19:38       ` [PATCH v2 2/2] unpack-trees: support core.allIgnoredFilesArePreciousWhenMerging Nguyễn Thái Ngọc Duy
2018-11-11 12:33   ` [RFC PATCH] Introduce "precious" file concept Ævar Arnfjörð Bjarmason
2018-11-11 13:06     ` Ævar Arnfjörð Bjarmason
2018-11-12 16:14       ` Duy Nguyen
2018-11-11 15:41     ` Duy Nguyen
2018-11-11 16:55       ` Ævar Arnfjörð Bjarmason
2018-11-12  7:35       ` Per Lundberg
2018-11-12  9:08         ` Matthieu Moy
2018-11-12  9:49           ` Ævar Arnfjörð Bjarmason
2018-11-12 10:26             ` Junio C Hamano
2018-11-12 12:45               ` Ævar Arnfjörð Bjarmason
2018-11-12 13:02                 ` Junio C Hamano
2018-11-12 16:07           ` Duy Nguyen
2018-11-12 23:22     ` brian m. carlson
2018-11-26  9:30       ` Per Lundberg
2018-11-26 10:28         ` Ævar Arnfjörð Bjarmason
2018-11-26 12:49         ` Junio C Hamano
2018-11-27 15:08           ` Ævar Arnfjörð Bjarmason
2018-11-28  3:58             ` Junio C Hamano
2018-11-28 21:54               ` Ævar Arnfjörð Bjarmason
2018-11-29  5:04                 ` Junio C Hamano
2018-12-01  6:21                 ` Duy Nguyen
2018-11-26 15:26         ` Duy Nguyen
2018-11-26 15:34           ` Ævar Arnfjörð Bjarmason
2018-11-26 15:40             ` Duy Nguyen
2018-11-26 15:47               ` Ævar Arnfjörð Bjarmason
2018-11-26 15:55                 ` Duy Nguyen
2018-11-27  9:43                   ` Per Lundberg
2018-11-27 12:55                     ` Jacob Keller
2018-11-27 14:50                       ` Per Lundberg [this message]
2018-11-28  1:21                         ` brian m. carlson
2018-11-28  6:54                           ` Per Lundberg
2018-11-27 15:19                       ` Duy Nguyen
2018-12-06 18:39                       ` Duy Nguyen
2018-11-26 16:02       ` Eckhard Maaß
  -- strict thread matches above, loose matches on Subject: below --
2018-10-15 13:01 Ignored files being silently overwritten when switching branches Per Lundberg
2018-10-16  6:40 ` Jeff King
2018-11-06 12:41 Checkout deleted semi-untracked file Steffen Jost

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