[PATCH v2] branch: honor core.abbrev

[Namhyung Kim <namhyung@gmail.com>]

Honor 'core.abbrev' configuration unless user specifies the
length on command line. In order to do that, we need to set
'abbrev' to DEFAULT_ABBREV after config and command line
parsing done.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
---
Sorry for my bad English and thanks for pointing this out. :)

 Documentation/git-branch.txt |    3 ++-
 builtin/branch.c             |    5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index c50f189..507b8d0 100644
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -113,7 +113,8 @@ OPTIONS
 
 --abbrev=<length>::
 	Alter the sha1's minimum display length in the output listing.
-	The default value is 7.
+	The default value is 7 and can be overridden by the `core.abbrev`
+	config option.
 
 --no-abbrev::
 	Display the full sha1s in the output listing rather than abbreviating them.
diff --git a/builtin/branch.c b/builtin/branch.c
index d6ab93b..5a15022 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -613,7 +613,7 @@ static int opt_parse_merge_filter(const struct option *opt, const char *arg, int
 int cmd_branch(int argc, const char **argv, const char *prefix)
 {
 	int delete = 0, rename = 0, force_create = 0;
-	int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
+	int verbose = 0, abbrev = -1, detached = 0;
 	int reflog = 0;
 	enum branch_track track;
 	int kinds = REF_LOCAL_BRANCH;
@@ -696,6 +696,9 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 	if (!!delete + !!rename + !!force_create > 1)
 		usage_with_options(builtin_branch_usage, options);
 
+	if (abbrev == -1)
+		abbrev = DEFAULT_ABBREV;
+
 	if (delete)
 		return delete_branches(argc, argv, delete > 1, kinds);
 	else if (argc == 0)
-- 
1.7.6