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describe: Add --first-parent option

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Only consider the first parent commit when walking the commit history. This
is useful if you only wish to match tags on your branch after a merge.

Signed-off-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Mike Crowe
2013-05-17 21:56:18 +01:00
committed by Junio C Hamano
parent de3a5c6da1
commit e00dd1e948
3 changed files with 16 additions and 1 deletions
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5
builtin/describe.c
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@ -21,6 +21,7 @@ static int debug; /* Display lots of verbose info */
static int all; /* Any valid ref can be used */
static int tags; /* Allow lightweight tags */
static int longformat;
static int first_parent;
static int abbrev = -1; /* unspecified */
static int max_candidates = 10;
static struct hash_table names;
@ -336,6 +337,9 @@ static void describe(const char *arg, int last_one)
commit_list_insert_by_date(p, &list);
p->object.flags |= c->object.flags;
parents = parents->next;
if (first_parent)
break;
}
}
@ -404,6 +408,7 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
OPT_BOOLEAN(0, "all", &all, N_("use any ref")),
OPT_BOOLEAN(0, "tags", &tags, N_("use any tag, even unannotated")),
OPT_BOOLEAN(0, "long", &longformat, N_("always use long format")),
OPT_BOOLEAN(0, "first-parent", &first_parent, N_("only follow first parent")),
OPT__ABBREV(&abbrev),
OPT_SET_INT(0, "exact-match", &max_candidates,
N_("only output exact matches"), 0),