Allow the user to control the verbosity of merge-recursive.

diff --git a/builtin-branch.c b/builtin-branch.c
index 487965b54070c3b9313f2b843a5194bae913e084..c760e188ea4169d878986ebd0d6c22702802aa59 100644 (file)
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -308,7 +308,8 @@ static void print_ref_list(int kinds, int detached, int verbose, int abbrev)
        free_ref_list(&ref_list);
 }
 
-static void create_branch(const char *name, const char *start,
+static void create_branch(const char *name, const char *start_name,
+                         unsigned char *start_sha1,
                          int force, int reflog)
 {
        struct ref_lock *lock;
@@ -327,9 +328,14 @@ static void create_branch(const char *name, const char *start,
                        die("Cannot force update the current branch.");
        }
 
-       if (get_sha1(start, sha1) ||
-           (commit = lookup_commit_reference(sha1)) == NULL)
-               die("Not a valid branch point: '%s'.", start);
+       if (start_sha1)
+               /* detached HEAD */
+               hashcpy(sha1, start_sha1);
+       else if (get_sha1(start_name, sha1))
+               die("Not a valid object name: '%s'.", start_name);
+
+       if ((commit = lookup_commit_reference(sha1)) == NULL)
+               die("Not a valid branch point: '%s'.", start_name);
        hashcpy(sha1, commit->object.sha1);
 
        lock = lock_any_ref_for_update(ref, NULL);
@@ -338,7 +344,8 @@ static void create_branch(const char *name, const char *start,
 
        if (reflog) {
                log_all_ref_updates = 1;
-               snprintf(msg, sizeof msg, "branch: Created from %s", start);
+               snprintf(msg, sizeof msg, "branch: Created from %s",
+                        start_name);
        }
 
        if (write_ref_sha1(lock, sha1, msg) < 0)
@@ -350,6 +357,9 @@ static void rename_branch(const char *oldname, const char *newname, int force)
        char oldref[PATH_MAX], newref[PATH_MAX], logmsg[PATH_MAX*2 + 100];
        unsigned char sha1[20];
 
+       if (!oldname)
+               die("cannot rename the curren branch while not on any.");
+
        if (snprintf(oldref, sizeof(oldref), "refs/heads/%s", oldname) > sizeof(oldref))
                die("Old branchname too long");
 
@@ -474,9 +484,9 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        else if (rename && (i == argc - 2))
                rename_branch(argv[i], argv[i + 1], force_rename);
        else if (i == argc - 1)
-               create_branch(argv[i], head, force_create, reflog);
+               create_branch(argv[i], head, head_sha1, force_create, reflog);
        else if (i == argc - 2)
-               create_branch(argv[i], argv[i + 1], force_create, reflog);
+               create_branch(argv[i], argv[i+1], NULL, force_create, reflog);
        else
                usage(builtin_branch_usage);