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From: Jack Bates <bk874k@nottheoilrig.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Jack Bates <jack@nottheoilrig.com>
Subject: [PATCH v2] diff: handle --no-abbrev outside of repository
Date: Fri,  2 Dec 2016 11:48:40 -0700	[thread overview]
Message-ID: <20161202184840.2158-1-jack@nottheoilrig.com> (raw)
In-Reply-To: <20161129070637.eult6o3m34r2mima@sigill.intra.peff.net>

The "git diff --no-index" codepath didn't handle the --no-abbrev option.
Also it didn't behave the same as find_unique_abbrev()
in the case where abbrev == 0.
find_unique_abbrev() returns the full, unabbreviated string in that
case, but the "git diff --no-index" codepath returned an empty string.

Signed-off-by: Jack Bates <jack@nottheoilrig.com>
---
 diff.c                                                  | 6 +++++-
 t/t4013-diff-various.sh                                 | 7 +++++++
 t/t4013/diff.diff_--no-index_--raw_--abbrev=4_dir2_dir  | 3 +++
 t/t4013/diff.diff_--no-index_--raw_--no-abbrev_dir2_dir | 3 +++
 t/t4013/diff.diff_--no-index_--raw_dir2_dir             | 3 +++
 t/t4013/diff.diff_--raw_--abbrev=4_initial              | 6 ++++++
 t/t4013/diff.diff_--raw_--no-abbrev_initial             | 6 ++++++
 t/t4013/diff.diff_--raw_initial                         | 6 ++++++
 8 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 t/t4013/diff.diff_--no-index_--raw_--abbrev=4_dir2_dir
 create mode 100644 t/t4013/diff.diff_--no-index_--raw_--no-abbrev_dir2_dir
 create mode 100644 t/t4013/diff.diff_--no-index_--raw_dir2_dir
 create mode 100644 t/t4013/diff.diff_--raw_--abbrev=4_initial
 create mode 100644 t/t4013/diff.diff_--raw_--no-abbrev_initial
 create mode 100644 t/t4013/diff.diff_--raw_initial

diff --git a/diff.c b/diff.c
index ec87283..84dba60 100644
--- a/diff.c
+++ b/diff.c
@@ -3106,7 +3106,8 @@ static const char *diff_abbrev_oid(const struct object_id *oid, int abbrev)
 			abbrev = FALLBACK_DEFAULT_ABBREV;
 		if (abbrev > GIT_SHA1_HEXSZ)
 			die("BUG: oid abbreviation out of range: %d", abbrev);
-		hex[abbrev] = '\0';
+		if (abbrev)
+			hex[abbrev] = '\0';
 		return hex;
 	}
 }
@@ -3364,6 +3365,7 @@ void diff_setup(struct diff_options *options)
 
 	options->file = stdout;
 
+	options->abbrev = DEFAULT_ABBREV;
 	options->line_termination = '\n';
 	options->break_opt = -1;
 	options->rename_limit = -1;
@@ -4024,6 +4026,8 @@ int diff_opt_parse(struct diff_options *options,
 			    offending, optarg);
 		return argcount;
 	}
+	else if (!strcmp(arg, "--no-abbrev"))
+		options->abbrev = 0;
 	else if (!strcmp(arg, "--abbrev"))
 		options->abbrev = DEFAULT_ABBREV;
 	else if (skip_prefix(arg, "--abbrev=", &arg)) {
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 566817e..d7b71a0 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -311,6 +311,13 @@ diff --line-prefix=abc master master^ side
 diff --dirstat master~1 master~2
 diff --dirstat initial rearrange
 diff --dirstat-by-file initial rearrange
+# --abbrev and --no-abbrev outside of repository
+diff --raw initial
+diff --raw --abbrev=4 initial
+diff --raw --no-abbrev initial
+diff --no-index --raw dir2 dir
+diff --no-index --raw --abbrev=4 dir2 dir
+diff --no-index --raw --no-abbrev dir2 dir
 EOF
 
 test_expect_success 'log -S requires an argument' '
diff --git a/t/t4013/diff.diff_--no-index_--raw_--abbrev=4_dir2_dir b/t/t4013/diff.diff_--no-index_--raw_--abbrev=4_dir2_dir
new file mode 100644
index 0000000..a71b38a
--- /dev/null
+++ b/t/t4013/diff.diff_--no-index_--raw_--abbrev=4_dir2_dir
@@ -0,0 +1,3 @@
+$ git diff --no-index --raw --abbrev=4 dir2 dir
+:000000 100644 0000... 0000... A	dir/sub
+$
diff --git a/t/t4013/diff.diff_--no-index_--raw_--no-abbrev_dir2_dir b/t/t4013/diff.diff_--no-index_--raw_--no-abbrev_dir2_dir
new file mode 100644
index 0000000..e0f0097
--- /dev/null
+++ b/t/t4013/diff.diff_--no-index_--raw_--no-abbrev_dir2_dir
@@ -0,0 +1,3 @@
+$ git diff --no-index --raw --no-abbrev dir2 dir
+:000000 100644 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 A	dir/sub
+$
diff --git a/t/t4013/diff.diff_--no-index_--raw_dir2_dir b/t/t4013/diff.diff_--no-index_--raw_dir2_dir
new file mode 100644
index 0000000..3cb4ee7
--- /dev/null
+++ b/t/t4013/diff.diff_--no-index_--raw_dir2_dir
@@ -0,0 +1,3 @@
+$ git diff --no-index --raw dir2 dir
+:000000 100644 0000000... 0000000... A	dir/sub
+$
diff --git a/t/t4013/diff.diff_--raw_--abbrev=4_initial b/t/t4013/diff.diff_--raw_--abbrev=4_initial
new file mode 100644
index 0000000..c3641db
--- /dev/null
+++ b/t/t4013/diff.diff_--raw_--abbrev=4_initial
@@ -0,0 +1,6 @@
+$ git diff --raw --abbrev=4 initial
+:100644 100644 35d2... 9929... M	dir/sub
+:100644 100644 01e7... 10a8... M	file0
+:000000 100644 0000... b1e6... A	file1
+:100644 000000 01e7... 0000... D	file2
+$
diff --git a/t/t4013/diff.diff_--raw_--no-abbrev_initial b/t/t4013/diff.diff_--raw_--no-abbrev_initial
new file mode 100644
index 0000000..c87a125
--- /dev/null
+++ b/t/t4013/diff.diff_--raw_--no-abbrev_initial
@@ -0,0 +1,6 @@
+$ git diff --raw --no-abbrev initial
+:100644 100644 35d242ba79ae89ac695e26b3d4c27a8e6f028f9e 992913c5aa0a5476d10c49ed0f21fc0c6d1aedf3 M	dir/sub
+:100644 100644 01e79c32a8c99c557f0757da7cb6d65b3414466d 10a8a9f3657f91a156b9f0184ed79a20adef9f7f M	file0
+:000000 100644 0000000000000000000000000000000000000000 b1e67221afe8461efd244b487afca22d46b95eb8 A	file1
+:100644 000000 01e79c32a8c99c557f0757da7cb6d65b3414466d 0000000000000000000000000000000000000000 D	file2
+$
diff --git a/t/t4013/diff.diff_--raw_initial b/t/t4013/diff.diff_--raw_initial
new file mode 100644
index 0000000..a3e9780
--- /dev/null
+++ b/t/t4013/diff.diff_--raw_initial
@@ -0,0 +1,6 @@
+$ git diff --raw initial
+:100644 100644 35d242b... 992913c... M	dir/sub
+:100644 100644 01e79c3... 10a8a9f... M	file0
+:000000 100644 0000000... b1e6722... A	file1
+:100644 000000 01e79c3... 0000000... D	file2
+$
-- 
2.10.2

  reply	other threads:[~2016-12-02 18:49 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-28 18:25 [PATCH] diff: handle --no-abbrev outside of repository Jack Bates
2016-11-28 23:03 ` Junio C Hamano
2016-11-29  7:06 ` Jeff King
2016-12-02 18:48   ` Jack Bates [this message]
2016-12-05  6:01     ` [PATCH v2] " Jeff King
2016-12-05  6:15       ` Jeff King
2016-12-05  6:58         ` Jeff King
2016-12-06  1:01           ` [PATCH v3] diff: handle --no-abbrev in no-index case Jack Bates
2016-12-06 16:53             ` [PATCH v4] " Jack Bates
2016-12-06 16:56             ` Jack Bates
2016-12-06 17:00               ` Jack Bates
2016-12-08 22:53               ` Junio C Hamano
2016-12-09  0:22                 ` Jack Bates

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