branch --contains: default to HEAD

We used to require the name of the commit to limit the branches shown to
the --contains option, but more recent --merged/--no-meregd defaults to
HEAD (and they do not allow arbitrary commit, which is a separate issue).

This teaches --contains to default to HEAD when no parameter is given.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-branch.c b/builtin-branch.c
index d279702ba9a90faa020fa2f102d595cec082be21..50cbc9c81a49d20cf289f3acc7843ce7170966d9 100644 (file)
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -438,13 +438,17 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT_BOOLEAN( 0 , "color",  &branch_use_color, "use colored output"),
                OPT_SET_INT('r', NULL,     &kinds, "act on remote-tracking branches",
                        REF_REMOTE_BRANCH),
                OPT_BOOLEAN( 0 , "color",  &branch_use_color, "use colored output"),
                OPT_SET_INT('r', NULL,     &kinds, "act on remote-tracking branches",
                        REF_REMOTE_BRANCH),

-               OPT_CALLBACK(0, "contains", &with_commit, "commit",
-                            "print only branches that contain the commit",
-                            opt_parse_with_commit),
+               {
+                       OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
+                       "print only branches that contain the commit",
+                       PARSE_OPT_LASTARG_DEFAULT,
+                       opt_parse_with_commit, (intptr_t)"HEAD",
+               },

                {
                        OPTION_CALLBACK, 0, "with", &with_commit, "commit",
                        "print only branches that contain the commit",
                {
                        OPTION_CALLBACK, 0, "with", &with_commit, "commit",
                        "print only branches that contain the commit",

-                       PARSE_OPT_HIDDEN, opt_parse_with_commit,
+                       PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
+                       opt_parse_with_commit, (intptr_t) "HEAD",

                },
                OPT__ABBREV(&abbrev),
 
                },
                OPT__ABBREV(&abbrev),