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From: Luke Shumaker <lukeshu@lukeshu.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Elijah Newren" <newren@gmail.com>,
	"Luke Shumaker" <lukeshu@lukeshu.com>,
	"Git Mailing List" <git@vger.kernel.org>,
	"Jeff King" <peff@peff.net>,
	"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
	"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
	"Taylor Blau" <me@ttaylorr.com>,
	"brian m . carlson" <sandals@crustytoothpaste.net>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Luke Shumaker" <lukeshu@datawire.io>
Subject: Re: [PATCH v3 3/3] fast-export, fast-import: implement signed-commits
Date: Fri, 30 Apr 2021 11:07:19 -0600	[thread overview]
Message-ID: <87eeerpupk.wl-lukeshu@lukeshu.com> (raw)
In-Reply-To: <xmqqim44fyjj.fsf@gitster.g>

On Thu, 29 Apr 2021 17:42:24 -0600,
Junio C Hamano wrote:
> 
> Elijah Newren <newren@gmail.com> writes:
> 
> > I do get that we might have to use warn-strip as the default anyway
> > just because some existing tools might rely on it, but do you have any
> > examples outside of git-filter-repo?  Given the filter-repo bug
> > reports I've gotten with users being surprised at commit signatures
> > being stripped (despite the fact that this is documented -- users
> > don't always read the documentation), I'd argue that changing to
> > --signed-commits=abort as the default is probably a good bugfix for
> > both fast-export and for filter-repo.
> 
> Thanks.  The "filter-repo already gets bug reports from the users"
> is a valuable input when deciding if it is reasonable to sell the
> behaviour change as a bugfix to our users.
> 
> Perhaps teaching fast-export to pay attention to two environment
> variables that say "when no --signed-{tag,commit}=<disposition>"
> command line option is given, use this behaviour" would be a good
> enough escape hatch for existing tools and their users, while they
> are waiting for their tools to get updated with the new option you
> are planning to add?

Between Elijah being on-board with changing the default, and the
suggested env-var escape hatch, you've won me over.

I'll change the default to 'abort' and implement an env-var escape
hatch.  Any suggestions on how to name it?
`FAST_EXPORT_SIGNED_COMMITS`?  Should I give it a `GIT_` prefix?
`FILTER_BRANCH_SQUELCH_WARNING` doesn't have a `GIT_` prefix...

> Also, I am glad that you brought up another possible behaviour that
> Luke's patch did not add.  Exporting existing signatures that may
> become invalid and deciding what to do with them on the receiving
> end would be a good option to have.  And that would most likely have
> to be done at "fast-import" end, as a commit that "fast-export"
> expected to retain its object name if its export stream were applied
> as-is may not retain the object name when the export stream gets
> preprocessed before being fed to "fast-import".

Elijah suggested that on an earlier version of the patchset too.  I
agree that it's a splendid idea, but I'm not willing to be the one to
do the work of implementing it... at least not in the next few months.

-- 
Happy hacking,
~ Luke Shumaker

  parent reply	other threads:[~2021-04-30 17:07 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-22  0:27 [PATCH v2 0/3] " Luke Shumaker
2021-04-22  0:27 ` [PATCH v2 1/3] git-fast-import.txt: add missing LF in the BNF Luke Shumaker
2021-04-22  0:27 ` [PATCH v2 2/3] fast-export: rename --signed-tags='warn' to 'warn-verbatim' Luke Shumaker
2021-04-22  3:59   ` Eric Sunshine
2021-04-22  4:43     ` Luke Shumaker
2021-04-22  4:50       ` Luke Shumaker
2021-04-22  0:27 ` [PATCH v2 3/3] fast-export, fast-import: implement signed-commits Luke Shumaker
2021-04-23 16:41 ` [PATCH v3 0/3] " Luke Shumaker
2021-04-23 16:41   ` [PATCH v3 1/3] git-fast-import.txt: add missing LF in the BNF Luke Shumaker
2021-04-23 16:41   ` [PATCH v3 2/3] fast-export: rename --signed-tags='warn' to 'warn-verbatim' Luke Shumaker
2021-04-28  3:29     ` Junio C Hamano
2021-04-29 19:02       ` Luke Shumaker
2021-04-30  0:03         ` Junio C Hamano
2021-04-23 16:41   ` [PATCH v3 3/3] fast-export, fast-import: implement signed-commits Luke Shumaker
2021-04-28  4:02     ` Junio C Hamano
2021-04-29 20:06       ` Luke Shumaker
2021-04-29 22:38         ` Elijah Newren
2021-04-29 23:42           ` Junio C Hamano
2021-04-30  2:23             ` Elijah Newren
2021-04-30  3:20               ` Junio C Hamano
2021-04-30 17:07             ` Luke Shumaker [this message]
2021-04-30 19:34       ` Luke Shumaker
2021-04-30 19:59         ` Elijah Newren
2021-04-30 22:21           ` Luke Shumaker
2021-04-30 23:25   ` [PATCH v4 0/5] fast-export, fast-import: add support for signed-commits Luke Shumaker
2021-04-30 23:25     ` [PATCH v4 1/5] git-fast-import.txt: add missing LF in the BNF Luke Shumaker
2021-04-30 23:25     ` [PATCH v4 2/5] fast-export: rename --signed-tags='warn' to 'warn-verbatim' Luke Shumaker
2021-04-30 23:25     ` [PATCH v4 3/5] git-fast-export.txt: clarify why 'verbatim' may not be a good idea Luke Shumaker
2021-04-30 23:25     ` [PATCH v4 4/5] fast-export: do not modify memory from get_commit_buffer Luke Shumaker
2021-05-03  4:41       ` Junio C Hamano
2021-04-30 23:25     ` [PATCH v4 5/5] fast-export, fast-import: add support for signed-commits Luke Shumaker
2021-05-03  5:09       ` Junio C Hamano

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