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From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
	"brian m . carlson" <sandals@crustytoothpaste.net>,
	Derrick Stolee <stolee@gmail.com>,
	Stefan Beller <sbeller@google.com>,
	Eric Sunshine <sunshine@sunshineco.com>,
	Duy Nguyen <pclouds@gmail.com>
Subject: Re: [PATCH v4 5/6] get_short_oid: sort ambiguous objects by type, then SHA-1
Date: Fri, 11 May 2018 14:36:14 +0900	[thread overview]
Message-ID: <xmqq36yyhhyp.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20180510124303.6020-6-avarab@gmail.com> ("Ævar Arnfjörð Bjarmason"'s message of "Thu, 10 May 2018 12:43:02 +0000")

Ævar Arnfjörð Bjarmason  <avarab@gmail.com> writes:

> diff --git a/sha1-name.c b/sha1-name.c
> index 9d7bbd3e96..46d8b1afa6 100644
> --- a/sha1-name.c
> +++ b/sha1-name.c
> @@ -409,6 +437,8 @@ static int get_short_oid(const char *name, int len, struct object_id *oid,
>  	status = finish_object_disambiguation(&ds, oid);
>  
>  	if (!quietly && (status == SHORT_NAME_AMBIGUOUS)) {
> +		struct oid_array collect = OID_ARRAY_INIT;
> +
>  		error(_("short SHA1 %s is ambiguous"), ds.hex_pfx);
>  
>  		/*
> @@ -421,7 +451,12 @@ static int get_short_oid(const char *name, int len, struct object_id *oid,
>  			ds.fn = NULL;
>  
>  		advise(_("The candidates are:"));
> -		for_each_abbrev(ds.hex_pfx, show_ambiguous_object, &ds);

So we used to let for_each_abbrev() to enumerate these object names
that share the prefix in the object name order and fed
show_ambiguous_object() to show them, which was the cause of the
output that is not grouped by type.  Now you collect them into
another oid_array and sort by type, relying on the fact to that the
for_each_abbrev() in the "collect" phase already does the de-duping.

Sounds good.

> +		for_each_abbrev(ds.hex_pfx, collect_ambiguous, &collect);
> +		QSORT(collect.oid, collect.nr, sort_ambiguous);
> +
> +		if (oid_array_for_each(&collect, show_ambiguous_object, &ds))
> +			BUG("show_ambiguous_object shouldn't return non-zero");
> +		oid_array_clear(&collect);
>  	}


> diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh
> index 711704ba5a..2701462041 100755
> --- a/t/t1512-rev-parse-disambiguation.sh
> +++ b/t/t1512-rev-parse-disambiguation.sh
> @@ -361,4 +361,25 @@ test_expect_success 'core.disambiguate does not override context' '
>  		git -c core.disambiguate=committish rev-parse $sha1^{tree}
>  '
>  
> +test_expect_success C_LOCALE_OUTPUT 'ambiguous commits are printed by type first, then hash order' '
> +	test_must_fail git rev-parse 0000 2>stderr &&
> +	grep ^hint: stderr >hints &&
> +	grep 0000 hints >objects &&
> +	cat >expected <<-\EOF &&
> +	tag
> +	commit
> +	tree
> +	blob
> +	EOF
> +	awk "{print \$3}" <objects >objects.types &&
> +	uniq <objects.types >objects.types.uniq &&

Eww, that is somewhat tricky (but correct) use of "uniq", which
POSIX not just mandates adjacent duplicates to be removed, but also
forbids from removing duplicates that are not adjacent from each
other.  So the objects in the "hints" file are not grouped by type,
we will fail to see these four lines.

> +	test_cmp expected objects.types.uniq &&
> +	for type in tag commit tree blob
> +	do
> +		grep $type objects >$type.objects &&
> +		sort $type.objects >$type.objects.sorted &&
> +		test_cmp $type.objects.sorted $type.objects

We not only want to see objects grouped by type (and types shown in
a desired order), but within the same type we want them ordered by
object name.

OK.

> +	done
> +'
> +
>  test_done

  parent reply	other threads:[~2018-05-11  5:36 UTC|newest]

Thread overview: 99+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-30 22:07 [PATCH 0/9] get_short_oid UI improvements Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 1/9] sha1-name.c: remove stray newline Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 2/9] sha1-array.h: align function arguments Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 3/9] sha1-name.c: move around the collect_ambiguous() function Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 4/9] get_short_oid: sort ambiguous objects by type, then SHA-1 Ævar Arnfjörð Bjarmason
2018-05-01 11:11   ` Derrick Stolee
2018-05-01 11:27     ` Ævar Arnfjörð Bjarmason
2018-05-01 12:26       ` Derrick Stolee
2018-05-01 12:36         ` Ævar Arnfjörð Bjarmason
2018-05-01 13:05           ` Derrick Stolee
2018-04-30 22:07 ` [PATCH 5/9] get_short_oid: learn to disambiguate by ^{tag} Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 6/9] get_short_oid: learn to disambiguate by ^{blob} Ævar Arnfjörð Bjarmason
2018-04-30 22:07 ` [PATCH 7/9] get_short_oid / peel_onion: ^{tree} should mean tree, not treeish Ævar Arnfjörð Bjarmason
2018-05-01  1:13   ` brian m. carlson
2018-04-30 22:07 ` [PATCH 8/9] get_short_oid / peel_onion: ^{tree} should mean commit, not commitish Ævar Arnfjörð Bjarmason
2018-04-30 23:22   ` Eric Sunshine
2018-04-30 22:07 ` [PATCH 9/9] config doc: document core.disambiguate Ævar Arnfjörð Bjarmason
2018-04-30 22:34 ` [PATCH 0/9] get_short_oid UI improvements Stefan Beller
2018-05-01  1:27 ` brian m. carlson
2018-05-01 11:16 ` Derrick Stolee
2018-05-01 12:06 ` [PATCH v2 00/12] " Ævar Arnfjörð Bjarmason
2018-05-01 13:03   ` [PATCH v2 06/11] get_short_oid: sort ambiguous objects by type, then SHA-1 Derrick Stolee
2018-05-01 13:39     ` Ævar Arnfjörð Bjarmason
2018-05-01 13:44       ` Derrick Stolee
2018-05-01 14:10         ` Ævar Arnfjörð Bjarmason
2018-05-01 14:15           ` Derrick Stolee
2018-05-01 18:40   ` [PATCH v3 00/12] get_short_oid UI improvements Ævar Arnfjörð Bjarmason
2018-05-02 12:42     ` Derrick Stolee
2018-05-02 13:45       ` Derrick Stolee
2018-05-03  6:43         ` Jacob Keller
2018-05-01 18:40   ` [PATCH v3 01/12] sha1-name.c: remove stray newline Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 02/12] sha1-array.h: align function arguments Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 03/12] git-p4: change "commitish" typo to "committish" Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 04/12] cache.h: add comment explaining the order in object_type Ævar Arnfjörð Bjarmason
2018-05-03  5:05     ` Junio C Hamano
2018-05-08 15:35     ` Duy Nguyen
2018-05-08 15:56       ` [PATCH] pack-format.txt: more details on pack file format Nguyễn Thái Ngọc Duy
2018-05-08 17:23         ` Stefan Beller
2018-05-08 18:22           ` Duy Nguyen
2018-05-08 18:58             ` Stefan Beller
2018-05-08 18:21         ` Ævar Arnfjörð Bjarmason
2018-05-08 18:24           ` Duy Nguyen
2018-05-10 15:09         ` [PATCH v2] " Nguyễn Thái Ngọc Duy
2018-05-10 17:06           ` Stefan Beller
2018-05-11  6:41             ` Duy Nguyen
2018-05-11  3:54           ` Junio C Hamano
2018-05-11  6:55           ` [PATCH v3] " Nguyễn Thái Ngọc Duy
2018-05-01 18:40   ` [PATCH v3 05/12] sha1-name.c: move around the collect_ambiguous() function Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 06/12] get_short_oid: sort ambiguous objects by type, then SHA-1 Ævar Arnfjörð Bjarmason
2018-05-03  5:13     ` Junio C Hamano
2018-05-08 14:44     ` Jeff King
2018-05-01 18:40   ` [PATCH v3 07/12] get_short_oid: learn to disambiguate by ^{tag} Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 08/12] get_short_oid: learn to disambiguate by ^{blob} Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 09/12] get_short_oid / peel_onion: ^{tree} should be tree, not treeish Ævar Arnfjörð Bjarmason
2018-05-03  5:28     ` Junio C Hamano
2018-05-03  7:28       ` Ævar Arnfjörð Bjarmason
2018-05-04  2:19         ` Junio C Hamano
2018-05-04  8:42           ` Ævar Arnfjörð Bjarmason
2018-05-07  4:08             ` Junio C Hamano
2018-05-08 14:34               ` Jeff King
2018-05-08 18:53                 ` Ævar Arnfjörð Bjarmason
2018-05-09  7:56                   ` Jeff King
2018-05-09 10:48                     ` Ævar Arnfjörð Bjarmason
2018-05-10  4:21                       ` Junio C Hamano
2018-05-10  6:50                         ` Jeff King
2018-05-10 12:42     ` [PATCH v4 0/6] get_short_oid UI improvements Ævar Arnfjörð Bjarmason
2018-05-10 16:04       ` Jeff King
2018-05-10 12:42     ` [PATCH v4 1/6] sha1-name.c: remove stray newline Ævar Arnfjörð Bjarmason
2018-05-10 12:42     ` [PATCH v4 2/6] sha1-array.h: align function arguments Ævar Arnfjörð Bjarmason
2018-05-10 15:06       ` Jeff King
2018-05-11  3:07         ` Junio C Hamano
2018-05-11  3:09           ` Junio C Hamano
2018-05-10 12:43     ` [PATCH v4 3/6] git-p4: change "commitish" typo to "committish" Ævar Arnfjörð Bjarmason
2018-05-10 15:00       ` Luke Diamand
2018-05-10 12:43     ` [PATCH v4 4/6] sha1-name.c: move around the collect_ambiguous() function Ævar Arnfjörð Bjarmason
2018-05-10 12:43     ` [PATCH v4 5/6] get_short_oid: sort ambiguous objects by type, then SHA-1 Ævar Arnfjörð Bjarmason
2018-05-10 15:22       ` Jeff King
2018-05-11  5:36       ` Junio C Hamano [this message]
2018-05-10 12:43     ` [PATCH v4 6/6] get_short_oid: document & warn if we ignore the type selector Ævar Arnfjörð Bjarmason
2018-05-10 13:15       ` Martin Ågren
2018-05-10 16:03       ` Jeff King
2018-05-10 16:10         ` Jeff King
2018-05-10 16:15         ` Jeff King
2018-05-01 18:40   ` [PATCH v3 10/12] get_short_oid / peel_onion: ^{commit} should be commit, not committish Ævar Arnfjörð Bjarmason
2018-05-01 18:40   ` [PATCH v3 11/12] config doc: document core.disambiguate Ævar Arnfjörð Bjarmason
2018-05-08 14:41     ` Jeff King
2018-05-01 18:40   ` [PATCH v3 12/12] get_short_oid: document & warn if we ignore the type selector Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 01/12] sha1-name.c: remove stray newline Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 02/12] sha1-array.h: align function arguments Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 03/12] git-p4: change "commitish" typo to "committish" Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 04/12] cache.h: add comment explaining the order in object_type Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 05/12] sha1-name.c: move around the collect_ambiguous() function Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 06/12] get_short_oid: sort ambiguous objects by type, then SHA-1 Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 07/12] get_short_oid: learn to disambiguate by ^{tag} Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 08/12] get_short_oid: learn to disambiguate by ^{blob} Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 09/12] get_short_oid / peel_onion: ^{tree} should be tree, not treeish Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 10/12] get_short_oid / peel_onion: ^{commit} should be commit, not committish Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 11/12] config doc: document core.disambiguate Ævar Arnfjörð Bjarmason
2018-05-01 12:06 ` [PATCH v2 12/12] get_short_oid: document & warn if we ignore the type selector Ævar Arnfjörð Bjarmason

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