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From: "Đoàn Trần Công Danh" <congdanhqx@gmail.com>
To: git@vger.kernel.org
Cc: "Đoàn Trần Công Danh" <congdanhqx@gmail.com>,
	"Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>
Subject: [PATCH v3 1/2] revision: differentiate if --no-abbrev asked explicitly
Date: Fri, 14 Aug 2020 07:23:09 +0700	[thread overview]
Message-ID: <9a26c5b6110081cd8d029f2ab0327c4a1d228ef7.1597364493.git.congdanhqx@gmail.com> (raw)
In-Reply-To: <cover.1597364493.git.congdanhqx@gmail.com>

When we see --no-abbrev in command's arguments, we reset the 'abbrev'
field in diff-options to 0 and this value will be looked at
diff_abbrev_oid() to decide not to truncate the object name.

In a later change, we want to extend --abbrev support to diff-patch
format. When --abbrev supporting diff-patch, we need to differentiate
those below scenarios:

* None of those options --abbrev, --no-abbrev, and --full-index are
  asked. diff-patch should keep old behavior of using DEFAULT_ABBREV
  for the index length.
* --no-abbrev is asked, diff-patch should treat this option as same as
  --full-index and show full object name in index line.

While not doing anything is very effective way to show full object id,
we couldn't differentiate if --no-abbrev or not.

We can differentiate those above scenarios by either:
* Add a new field in diff-options to mark if --no-abbrev was asked.
  With this option, we have a new field for a single purpose, and one
  more thing to worry about.
* Treat --no-abbrev as same as --full-index. This option is problematic,
  since we want to allow --abbrev overwrite --no-abbrev again.
  On the other hand, we also need to keep our promises with scripter
  who uses --full-index to ask for full object names in index line,
  so, we need to respsect --full-index regardless of --abbrev.
* Set 'abbrev' field in diff-options to the length of the hash we are
  using. With this option, we can differentiate if --no-abbrev was asked
  ('abbrev' is hash's length) or none of --[no-]abbrev was asked
  ('abbrev' is '0'), script with --full-index still works and our
  headache is kept as is.

Let's ask for full object id if we see --no-abbrev.

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
---
 revision.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/revision.c b/revision.c
index 3dcf689341..24027b1af3 100644
--- a/revision.c
+++ b/revision.c
@@ -2430,7 +2430,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 	} else if (!strcmp(arg, "--always")) {
 		revs->always_show_header = 1;
 	} else if (!strcmp(arg, "--no-abbrev")) {
-		revs->abbrev = 0;
+		revs->abbrev = hexsz;
 	} else if (!strcmp(arg, "--abbrev")) {
 		revs->abbrev = DEFAULT_ABBREV;
 	} else if (skip_prefix(arg, "--abbrev=", &optarg)) {
-- 
2.28.0.215.g32ffa52ee0


  reply	other threads:[~2020-08-14  0:23 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-09  2:19 [RFC PATCH 0/2] extend --abbrev support to diff-patch format Đoàn Trần Công Danh
2020-08-09  2:19 ` [RFC PATCH 1/2] revision: differentiate if --no-abbrev asked explicitly Đoàn Trần Công Danh
2020-08-09  2:19 ` [RFC PATCH 2/2] diff: extend --abbrev support to diff-patch format Đoàn Trần Công Danh
2020-08-09 19:01 ` [RFC PATCH 0/2] " Junio C Hamano
2020-08-10 10:00   ` Jeff King
2020-08-10 12:31     ` Đoàn Trần Công Danh
2020-08-10 15:15       ` Junio C Hamano
2020-08-10 15:27         ` Jeff King
2020-08-11  0:33           ` Đoàn Trần Công Danh
2020-08-11  5:22             ` Jeff King
2020-08-11 12:07               ` Đoàn Trần Công Danh
2020-08-10 15:06     ` Junio C Hamano
2020-08-11 11:49 ` [PATCH v2 0/2] diff: index-line: respect --abbrev in object's name Đoàn Trần Công Danh
2020-08-11 11:49   ` [PATCH v2 1/2] revision: differentiate if --no-abbrev asked explicitly Đoàn Trần Công Danh
2020-08-11 18:54     ` Junio C Hamano
2020-08-11 11:49   ` [PATCH v2 2/2] diff: index-line: respect --abbrev in object's name Đoàn Trần Công Danh
2020-08-14  0:23 ` [PATCH v3 0/2] " Đoàn Trần Công Danh
2020-08-14  0:23   ` Đoàn Trần Công Danh [this message]
2020-08-14  0:50     ` [PATCH v3 1/2] revision: differentiate if --no-abbrev asked explicitly Junio C Hamano
2020-08-14  0:59       ` Đoàn Trần Công Danh
2020-08-14  1:06         ` Junio C Hamano
2020-08-14 14:50           ` Đoàn Trần Công Danh
2020-08-19 22:50             ` Junio C Hamano
2020-08-14  0:23   ` [PATCH v3 2/2] diff: index-line: respect --abbrev in object's name Đoàn Trần Công Danh
2020-08-14 15:18     ` SZEDER Gábor
2020-08-14 17:00       ` Junio C Hamano
2020-08-14 18:59         ` Junio C Hamano
2020-08-15  0:21           ` brian m. carlson
2020-08-15  2:27             ` Đoàn Trần Công Danh
2020-08-17 16:17               ` Junio C Hamano
2020-08-20  4:56               ` Junio C Hamano
2020-08-20 12:35 ` [PATCH v4 0/2] " Đoàn Trần Công Danh
2020-08-20 12:35   ` [PATCH v4 1/2] t4013: improve diff-post-processor logic Đoàn Trần Công Danh
2020-08-20 19:49     ` Junio C Hamano
2020-08-21 12:05       ` Đoàn Trần Công Danh
2020-08-21 15:44         ` Junio C Hamano
2020-08-20 12:35   ` [PATCH v4 2/2] diff: index-line: respect --abbrev in object's name Đoàn Trần Công Danh
2020-08-20 19:58     ` Junio C Hamano
2020-08-21 11:51 ` [PATCH v5 0/2] " Đoàn Trần Công Danh
2020-08-21 11:51   ` [PATCH v5 1/2] t4013: improve diff-post-processor logic Đoàn Trần Công Danh
2020-08-21 11:51   ` [PATCH v5 2/2] diff: index-line: respect --abbrev in object's name Đoàn Trần Công Danh

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