From: Luke Shumaker <lukeshu@lukeshu.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Luke Shumaker" <lukeshu@lukeshu.com>,
git@vger.kernel.org, "Elijah Newren" <newren@gmail.com>,
"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 2/3] fast-export: rename --signed-tags='warn' to 'warn-verbatim'
Date: Thu, 29 Apr 2021 13:02:28 -0600 [thread overview]
Message-ID: <87pmycq5h7.wl-lukeshu@lukeshu.com> (raw)
In-Reply-To: <xmqqpmyfccjb.fsf@gitster.g>
On Tue, 27 Apr 2021 21:29:12 -0600,
Junio C Hamano wrote:
> Luke Shumaker <lukeshu@lukeshu.com> writes:
>
> > ---signed-tags=(verbatim|warn|warn-strip|strip|abort)::
> > +--signed-tags=(verbatim|warn-verbatim|warn-strip|strip|abort)::
> > Specify how to handle signed tags. Since any transformation
> > after the export can change the tag names (which can also happen
> > when excluding revisions) the signatures will not match.
> > @@ -36,8 +36,10 @@ When asking to 'abort' (which is the default), this program will die
> > when encountering a signed tag. With 'strip', the tags will silently
> > be made unsigned, with 'warn-strip' they will be made unsigned but a
> > warning will be displayed, with 'verbatim', they will be silently
> > -exported and with 'warn', they will be exported, but you will see a
> > -warning.
> > +exported and with 'warn-verbatim', they will be exported, but you will
> > +see a warning.
> > ++
> > +`warn` is a deprecated synonym of `warn-verbatim`.
>
> Two minor points
>
> - Is it obvious to everybody what is the implication of using
> "verbatim" (which in turn would bring the readers to realize why
> it often deserves a warning)? If not, would it make sense to
> explain why "verbatim" may (may not) be a good idea in different
> situations?
I had assumed that the above paragraph
| Specify how to handle signed tags. Since any transformation
| after the export can change the tag names (which can also happen
| when excluding revisions) the signatures will not match.
was adaquate for that purpose, but we can maybe do better?
> - I am not sure a deprecated synonym deserves a separate paragraph.
Fair enough. My thinking was to keep the deprecation separate from
the main "happy path" text.
How about:
| Specify how to handle signed tags. Since any transformation after the
| export (or during the export, such as excluding revisions) can change
| the hashes being signed, the signatures may not match.
|
| When asking to 'abort' (which is the default), this program will die
| when encountering a signed tag. With 'strip', the tags will silently
| be made unsigned, with 'warn-strip' they will be made unsigned but a
| warning will be displayed, with 'verbatim', they will be silently
| exported and with 'warn-verbatim' (or 'warn', a deprecated synonym),
| they will be exported, but you will see a warning. 'verbatim' should
| not be used unless you know that no transformations affecting tags
| will be performed, or unless you do not care that the resulting tag
| will have an invalid signature.
?
> > diff --git a/builtin/fast-export.c b/builtin/fast-export.c
> > index 85a76e0ef8..d121dd2ee6 100644
> > --- a/builtin/fast-export.c
> > +++ b/builtin/fast-export.c
> > @@ -55,7 +55,7 @@ static int parse_opt_signed_tag_mode(const struct option *opt,
> > signed_tag_mode = SIGNED_TAG_ABORT;
> > else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
> > signed_tag_mode = VERBATIM;
> > - else if (!strcmp(arg, "warn"))
> > + else if (!strcmp(arg, "warn-verbatim") || !strcmp(arg, "warn"))
> > signed_tag_mode = WARN;
> > else if (!strcmp(arg, "warn-strip"))
> > signed_tag_mode = WARN_STRIP;
>
> It would be preferrable to do s/WARN/WARN_VERBATIM/ at this step, as
> the plan is to deprecate "warn", even if you are going to redo the
> enums in later steps. May want to consider doing so as a clean-up
> iff this topic need rerolling for other reasons.
Ack.
> > diff --git a/t/t9350-fast-export.sh b/t/t9350-fast-export.sh
> > index 409b48e244..892737439b 100755
> > --- a/t/t9350-fast-export.sh
> > +++ b/t/t9350-fast-export.sh
> > @@ -253,6 +253,24 @@ test_expect_success 'signed-tags=verbatim' '
> >
> > '
> >
> > +test_expect_success 'signed-tags=warn-verbatim' '
> > +
> > + git fast-export --signed-tags=warn-verbatim sign-your-name >output 2>err &&
> > + grep PGP output &&
> > + test -s err
>
> I didn't look at the surrounding existing tests, but in general
> "test -s err" is not a good ingredient in any test. The feature you
> happen to care about today may not stay to be be the only thing that
> writes to the standard error stream.
Yeah, that line made me nervous, but I figured if it was good enough
for the existing 'warn-strip' test, then it was good enough for
'warn-verbatim' too.
--
Happy hacking,
~ Luke Shumaker
next prev parent reply other threads:[~2021-04-29 19:02 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-22 0:27 [PATCH v2 0/3] fast-export, fast-import: implement signed-commits 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 [this message]
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
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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