Merge branch 'ks/branch-cleanup'

Code clean-up.

* ks/branch-cleanup:
  builtin/branch: strip refs/heads/ using skip_prefix
  branch: update warning message shown when copying a misnamed branch
  branch: group related arguments of create_branch()
  branch: improve documentation and naming of create_branch() parameters

Author: gitster

branch.c

@@ -244,7 +244,7 @@ N_("\n"
 "\"git push -u\" to set the upstream config as you push.");
 
 void create_branch(const char *name, const char *start_name,
-		   int force, int reflog, int clobber_head,
+		   int force, int clobber_head_ok, int reflog,
 		   int quiet, enum branch_track track)
 {
 	struct commit *commit;
@@ -258,7 +258,7 @@ void create_branch(const char *name, const char *start_name,
 	if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
 		explicit_tracking = 1;
 
-	if ((track == BRANCH_TRACK_OVERRIDE || clobber_head)
+	if ((track == BRANCH_TRACK_OVERRIDE || clobber_head_ok)
 	    ? validate_branchname(name, &ref)
 	    : validate_new_branchname(name, &ref, force)) {
 		if (!force)

branch.h

@@ -13,14 +13,20 @@
  *
  *   - force enables overwriting an existing (non-head) branch
  *
+ *   - clobber_head_ok allows the currently checked out (hence existing)
+ *     branch to be overwritten; without 'force', it has no effect.
+ *
  *   - reflog creates a reflog for the branch
  *
+ *   - quiet suppresses tracking information
+ *
  *   - track causes the new branch to be configured to merge the remote branch
  *     that start_name is a tracking branch for (if any).
+ *
  */
 void create_branch(const char *name, const char *start_name,
-		   int force, int reflog,
-		   int clobber_head, int quiet, enum branch_track track);
+		   int force, int clobber_head_ok,
+		   int reflog, int quiet, enum branch_track track);
 
 /*
  * Check if 'name' can be a valid name for a branch; die otherwise.

builtin/branch.c

@@ -462,6 +462,8 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 {
 	struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
 	struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
+	const char *interpreted_oldname = NULL;
+	const char *interpreted_newname = NULL;
 	int recovery = 0;
 
 	if (!oldname) {
@@ -493,6 +495,11 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
 	reject_rebase_or_bisect_branch(oldref.buf);
 
+	if (!skip_prefix(oldref.buf, "refs/heads/", &interpreted_oldname) ||
+	    !skip_prefix(newref.buf, "refs/heads/", &interpreted_newname)) {
+		die("BUG: expected prefix missing for refs");
+	}
+
 	if (copy)
 		strbuf_addf(&logmsg, "Branch: copied %s to %s",
 			    oldref.buf, newref.buf);
@@ -507,11 +514,11 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
 	if (recovery) {
 		if (copy)
-			warning(_("Copied a misnamed branch '%s' away"),
-				oldref.buf + 11);
+			warning(_("Created a copy of a misnamed branch '%s'"),
+				interpreted_oldname);
 		else
 			warning(_("Renamed a misnamed branch '%s' away"),
-				oldref.buf + 11);
+				interpreted_oldname);
 	}
 
 	if (!copy &&
@@ -520,9 +527,9 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 
 	strbuf_release(&logmsg);
 
-	strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
+	strbuf_addf(&oldsection, "branch.%s", interpreted_oldname);
 	strbuf_release(&oldref);
-	strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
+	strbuf_addf(&newsection, "branch.%s", interpreted_newname);
 	strbuf_release(&newref);
 	if (!copy && git_config_rename_section(oldsection.buf, newsection.buf) < 0)
 		die(_("Branch is renamed, but update of config-file failed"));
@@ -806,7 +813,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 			die(_("the '--set-upstream' option is no longer supported. Please use '--track' or '--set-upstream-to' instead."));
 
 		create_branch(argv[0], (argc == 2) ? argv[1] : head,
-			      force, reflog, 0, quiet, track);
+			      force, 0, reflog, quiet, track);
 
 	} else
 		usage_with_options(builtin_branch_usage, options);

builtin/checkout.c

@@ -647,8 +647,8 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
 		else
 			create_branch(opts->new_branch, new->name,
 				      opts->new_branch_force ? 1 : 0,
-				      opts->new_branch_log,
 				      opts->new_branch_force ? 1 : 0,
+				      opts->new_branch_log,
 				      opts->quiet,
 				      opts->track);
 		new->name = opts->new_branch;