branch: support configuring --sort via .gitconfig

Add support for configuring default sort ordering for git branches. Command
line option will override this configured value, using the exact same
syntax.

Signed-off-by: Samuel Maftoul <samuel.maftoul@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/builtin/branch.c b/builtin/branch.c
index 4fc55c3508..bbd006aab4 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -74,6 +74,14 @@ define_list_config_array(color_branch_slots);
 static int git_branch_config(const char *var, const char *value, void *cb)
 {
 	const char *slot_name;
+	struct ref_sorting **sorting_tail = (struct ref_sorting **)cb;
+
+	if (!strcmp(var, "branch.sort")) {
+		if (!value)
+			return config_error_nonbool(var);
+		parse_ref_sorting(sorting_tail, value);
+		return 0;
+	}
 
 	if (starts_with(var, "column."))
 		return git_column_config(var, value, "branch", &colopts);
@@ -653,7 +661,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 	if (argc == 2 && !strcmp(argv[1], "-h"))
 		usage_with_options(builtin_branch_usage, options);
 
-	git_config(git_branch_config, NULL);
+	git_config(git_branch_config, sorting_tail);
 
 	track = git_branch_track;