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From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Victoria Dye via GitGitGadget <gitgitgadget@gmail.com>,
	git@vger.kernel.org, derrickstolee@github.com,
	johannes.schindelin@gmx.de, Victoria Dye <vdye@github.com>
Subject: Re: [PATCH v2 03/10] scalar-diagnose: add directory to archiver more gently
Date: Thu, 04 Aug 2022 22:12:56 +0200	[thread overview]
Message-ID: <220804.8635ebu55j.gmgdl@evledraar.gmail.com> (raw)
In-Reply-To: <xmqq35ec6igq.fsf@gitster.g>


On Thu, Aug 04 2022, Junio C Hamano wrote:

> Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:
>
>>> +	dir = opendir(at_root ? "." : path);
>>> +	if (!dir) {
>>> +		if (errno == ENOENT) {
>>
>> Per [1]
>
> "Per [1]" somehow sounds more like a reference to an authoritative
> source, at least to me.  Every time you use it, I have to see what
> it refers to, and after realizing that you used it as a replacement
> of "I said it already in [1]" again, it leaves a funny feeling.

"Per" in the sense of "Per what I noted in [1]".

>> I think this is incorrect or overly strict. Let's not spew
>> warnings if the user "rm -rf .git/hooks" or whatever.
>
> The above is doing the right thing even in that situation, doesn't
> it?  If there is no ".git/hooks" that is fine.  We get ENOENT, give
> a warning to indicate that we found an unusual situation, and return
> without failing.  If we got something other than ENOENT, we fail with
> error_errno(), because opendir() failed for a reason other than "No
> such file or directory".

I'm mainly noting that the point of this step is to produce an archive
for the consumption of the remote end.

Therefore it seems to me like it would me much more useful to note these
"oddities" in some log that we're about to zip up, rather than issue a
warning().

The "per [1]" was a reference to the (paraphrasing) "maybe that's not
needed at all", but you seemed to think so. But for the purposes of the
discussion here let's assume we keep it.

>> You already have an errno, so using *_errno() will add the standard
>> information about what the issue is.
>
> Reading the code aloud, slowly, may help.  When errno says ENOENT,
> we know opendir() failed because of "No such file or directory",
> so "path" was missing.  So let's say 'not archiving a missing directory'".
>
> ENOENT or "No such file or directory" is an implementation detail
> that does not help the end user.
>
> The other side, i.e. when the errno is *not* ENOENT, already uses
> error_errno().
>
> So, I am puzzled.

I'm pointing out that we don't need to include that part in the message,
because warning_errno() will already give us that for free. I.e.:

	warning: could not archive directory '<some dir>': No such file or directory

v.s.:

	warning: could not archive missing directory '<some dir>'

The advantages of doing so being:

 * It's clear (at least to the keen eye) that it's using the "errno
   format", so you know it's not just saying "could not for <whatever
   reason>", it specifically got ENOENT.

 * The i18n for the strerror() comes from the C library, which will be
   translated already, whereas a new git.pot message won't be (but we'll
   hopefully bridge the gap eventually).

 * This way we we can share the message, whatever the errno happens to
   be, so we could e.g.:

      errno = ENOENT;
      warning_errno(_("could not archive directory '%s'"), "<some dir>");
      errno = ENOMEM;
      error_errno(_("could not archive directory '%s'"), "<some dir>");

   Whereas putting the reason for why we couldn't (which just duplicates
   the errno) in the message forces the messages & i18n to diverge.

  reply	other threads:[~2022-08-04 20:26 UTC|newest]

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-01 21:14 [PATCH 0/7] Generalize 'scalar diagnose' into 'git bugreport --diagnose' Victoria Dye via GitGitGadget
2022-08-01 21:14 ` [PATCH 1/7] scalar: use "$GIT_UNZIP" in 'scalar diagnose' test Victoria Dye via GitGitGadget
2022-08-01 21:46   ` Junio C Hamano
2022-08-01 21:14 ` [PATCH 2/7] builtin/bugreport.c: create '--diagnose' option Victoria Dye via GitGitGadget
2022-08-01 22:16   ` Junio C Hamano
2022-08-02 15:40     ` Victoria Dye
2022-08-02  2:17   ` Ævar Arnfjörð Bjarmason
2022-08-01 21:14 ` [PATCH 3/7] builtin/bugreport.c: avoid size_t overflow Victoria Dye via GitGitGadget
2022-08-01 22:18   ` Junio C Hamano
2022-08-02 16:26     ` Victoria Dye
2022-08-02 20:51       ` Junio C Hamano
2022-08-02  2:03   ` Ævar Arnfjörð Bjarmason
2022-08-02 16:26     ` Victoria Dye
2022-08-03 12:25       ` Ævar Arnfjörð Bjarmason
2022-08-01 21:14 ` [PATCH 4/7] builtin/bugreport.c: add directory to archiver more gently Victoria Dye via GitGitGadget
2022-08-01 22:22   ` Junio C Hamano
2022-08-02 15:43     ` Victoria Dye
2022-08-01 21:14 ` [PATCH 5/7] builtin/bugreport.c: add '--no-report' option Victoria Dye via GitGitGadget
2022-08-01 22:31   ` Junio C Hamano
2022-08-02 19:46     ` Victoria Dye
2022-08-01 21:14 ` [PATCH 6/7] scalar: use 'git bugreport --diagnose' in 'scalar diagnose' Victoria Dye via GitGitGadget
2022-08-01 21:14 ` [PATCH 7/7] scalar: update technical doc roadmap Victoria Dye via GitGitGadget
2022-08-01 21:34 ` [PATCH 0/7] Generalize 'scalar diagnose' into 'git bugreport --diagnose' Junio C Hamano
2022-08-02  2:49 ` Ævar Arnfjörð Bjarmason
2022-08-02 19:48   ` Victoria Dye
2022-08-03 12:34     ` Ævar Arnfjörð Bjarmason
2022-08-04  1:45 ` [PATCH v2 00/10] Generalize 'scalar diagnose' into 'git diagnose' and " Victoria Dye via GitGitGadget
2022-08-04  1:45   ` [PATCH v2 01/10] scalar-diagnose: use "$GIT_UNZIP" in test Victoria Dye via GitGitGadget
2022-08-04  1:45   ` [PATCH v2 02/10] scalar-diagnose: avoid 32-bit overflow of size_t Victoria Dye via GitGitGadget
2022-08-04  1:45   ` [PATCH v2 03/10] scalar-diagnose: add directory to archiver more gently Victoria Dye via GitGitGadget
2022-08-04  6:19     ` Ævar Arnfjörð Bjarmason
2022-08-04 17:12       ` Junio C Hamano
2022-08-04 20:12         ` Ævar Arnfjörð Bjarmason [this message]
2022-08-04 21:09           ` Junio C Hamano
2022-08-04  1:45   ` [PATCH v2 04/10] scalar-diagnose: move 'get_disk_info()' to 'compat/' Victoria Dye via GitGitGadget
2022-08-04  1:45   ` [PATCH v2 05/10] scalar-diagnose: move functionality to common location Victoria Dye via GitGitGadget
2022-08-04  6:24     ` Ævar Arnfjörð Bjarmason
2022-08-04  1:45   ` [PATCH v2 06/10] builtin/diagnose.c: create 'git diagnose' builtin Victoria Dye via GitGitGadget
2022-08-04  6:27     ` Ævar Arnfjörð Bjarmason
2022-08-05 19:38       ` Derrick Stolee
2022-08-11 11:06         ` Ævar Arnfjörð Bjarmason
2022-08-05 19:11     ` Derrick Stolee
2022-08-04  1:45   ` [PATCH v2 07/10] builtin/diagnose.c: gate certain data behind '--all' Victoria Dye via GitGitGadget
2022-08-04  6:39     ` Ævar Arnfjörð Bjarmason
2022-08-04  1:45   ` [PATCH v2 08/10] builtin/bugreport.c: create '--diagnose' option Victoria Dye via GitGitGadget
2022-08-05 19:35     ` Derrick Stolee
2022-08-09 23:53       ` Victoria Dye
2022-08-10 12:52         ` Derrick Stolee
2022-08-10 16:13           ` Victoria Dye
2022-08-10 16:47             ` Derrick Stolee
2022-08-04  1:45   ` [PATCH v2 09/10] scalar-diagnose: use 'git diagnose --all' Victoria Dye via GitGitGadget
2022-08-04  6:54     ` Ævar Arnfjörð Bjarmason
2022-08-09 16:54       ` Victoria Dye
2022-08-04  1:45   ` [PATCH v2 10/10] scalar: update technical doc roadmap Victoria Dye via GitGitGadget
2022-08-04 17:22   ` [PATCH v2 00/10] Generalize 'scalar diagnose' into 'git diagnose' and 'git bugreport --diagnose' Junio C Hamano
2022-08-09 16:17     ` Victoria Dye
2022-08-09 16:50       ` Junio C Hamano
2022-08-10 23:34   ` [PATCH v3 00/11] " Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 01/11] scalar-diagnose: use "$GIT_UNZIP" in test Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 02/11] scalar-diagnose: avoid 32-bit overflow of size_t Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 03/11] scalar-diagnose: add directory to archiver more gently Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 04/11] scalar-diagnose: move 'get_disk_info()' to 'compat/' Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 05/11] scalar-diagnose: move functionality to common location Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 06/11] diagnose.c: add option to configure archive contents Victoria Dye via GitGitGadget
2022-08-11  0:16       ` Junio C Hamano
2022-08-12 17:00         ` Victoria Dye
2022-08-11 10:51       ` Ævar Arnfjörð Bjarmason
2022-08-11 15:43         ` Victoria Dye
2022-08-10 23:34     ` [PATCH v3 07/11] builtin/diagnose.c: create 'git diagnose' builtin Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 08/11] builtin/diagnose.c: add '--mode' option Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 09/11] builtin/bugreport.c: create '--diagnose' option Victoria Dye via GitGitGadget
2022-08-11 10:53       ` Ævar Arnfjörð Bjarmason
2022-08-11 15:40         ` Victoria Dye
2022-08-11 20:30           ` Ævar Arnfjörð Bjarmason
2022-08-10 23:34     ` [PATCH v3 10/11] scalar-diagnose: use 'git diagnose --mode=all' Victoria Dye via GitGitGadget
2022-08-10 23:34     ` [PATCH v3 11/11] scalar: update technical doc roadmap Victoria Dye via GitGitGadget
2022-08-12 20:10     ` [PATCH v4 00/11] Generalize 'scalar diagnose' into 'git diagnose' and 'git bugreport --diagnose' Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 01/11] scalar-diagnose: use "$GIT_UNZIP" in test Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 02/11] scalar-diagnose: avoid 32-bit overflow of size_t Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 03/11] scalar-diagnose: add directory to archiver more gently Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 04/11] scalar-diagnose: move 'get_disk_info()' to 'compat/' Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 05/11] scalar-diagnose: move functionality to common location Victoria Dye via GitGitGadget
2022-08-12 20:26         ` Junio C Hamano
2022-08-12 21:00           ` Victoria Dye
2022-08-12 21:20             ` Junio C Hamano
2022-08-12 20:10       ` [PATCH v4 06/11] diagnose.c: add option to configure archive contents Victoria Dye via GitGitGadget
2022-08-12 20:31         ` Junio C Hamano
2022-08-12 20:10       ` [PATCH v4 07/11] builtin/diagnose.c: create 'git diagnose' builtin Victoria Dye via GitGitGadget
2022-08-18 18:43         ` Ævar Arnfjörð Bjarmason
2022-08-18 19:12           ` Junio C Hamano
2022-08-12 20:10       ` [PATCH v4 08/11] builtin/diagnose.c: add '--mode' option Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 09/11] builtin/bugreport.c: create '--diagnose' option Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 10/11] scalar-diagnose: use 'git diagnose --mode=all' Victoria Dye via GitGitGadget
2022-08-12 20:10       ` [PATCH v4 11/11] scalar: update technical doc roadmap Victoria Dye via GitGitGadget

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