rebase-update-refs: extract load_branch_decorations

Extract load_branch_decorations from todo_list_add_update_ref_commands so
it can be re-used in make_script_with_merges.

Since it can now be called multiple times, use non-static lists and place
it next to load_ref_decorations to re-use the decoration_loaded guard.

Signed-off-by: Nicolas Guichard <nicolas@guichard.eu>
Acked-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: nicolas-guichard

log-tree.c

@@ -248,6 +248,27 @@ void load_ref_decorations(struct decoration_filter *filter, int flags)
 	}
 }
 
+void load_branch_decorations(void)
+{
+	if (!decoration_loaded) {
+		struct string_list decorate_refs_exclude = STRING_LIST_INIT_NODUP;
+		struct string_list decorate_refs_exclude_config = STRING_LIST_INIT_NODUP;
+		struct string_list decorate_refs_include = STRING_LIST_INIT_NODUP;
+		struct decoration_filter decoration_filter = {
+			.include_ref_pattern = &decorate_refs_include,
+			.exclude_ref_pattern = &decorate_refs_exclude,
+			.exclude_ref_config_pattern = &decorate_refs_exclude_config,
+		};
+
+		string_list_append(&decorate_refs_include, "refs/heads/");
+		load_ref_decorations(&decoration_filter, 0);
+
+		string_list_clear(&decorate_refs_exclude, 0);
+		string_list_clear(&decorate_refs_exclude_config, 0);
+		string_list_clear(&decorate_refs_include, 0);
+	}
+}
+
 static void show_parents(struct commit *commit, int abbrev, FILE *file)
 {
 	struct commit_list *p;

log-tree.h

@@ -33,6 +33,7 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
 			     int *need_8bit_cte_p,
 			     int maybe_multipart);
 void load_ref_decorations(struct decoration_filter *filter, int flags);
+void load_branch_decorations(void);
 
 void fmt_output_commit(struct strbuf *, struct commit *, struct rev_info *);
 void fmt_output_subject(struct strbuf *, const char *subject, struct rev_info *);

sequencer.c

@@ -6403,14 +6403,6 @@ static int add_decorations_to_list(const struct commit *commit,
 static int todo_list_add_update_ref_commands(struct todo_list *todo_list)
 {
 	int i, res;
-	static struct string_list decorate_refs_exclude = STRING_LIST_INIT_NODUP;
-	static struct string_list decorate_refs_exclude_config = STRING_LIST_INIT_NODUP;
-	static struct string_list decorate_refs_include = STRING_LIST_INIT_NODUP;
-	struct decoration_filter decoration_filter = {
-		.include_ref_pattern = &decorate_refs_include,
-		.exclude_ref_pattern = &decorate_refs_exclude,
-		.exclude_ref_config_pattern = &decorate_refs_exclude_config,
-	};
 	struct todo_add_branch_context ctx = {
 		.buf = &todo_list->buf,
 		.refs_to_oids = STRING_LIST_INIT_DUP,
@@ -6419,8 +6411,7 @@ static int todo_list_add_update_ref_commands(struct todo_list *todo_list)
 	ctx.items_alloc = 2 * todo_list->nr + 1;
 	ALLOC_ARRAY(ctx.items, ctx.items_alloc);
 
-	string_list_append(&decorate_refs_include, "refs/heads/");
-	load_ref_decorations(&decoration_filter, 0);
+	load_branch_decorations();
 
 	for (i = 0; i < todo_list->nr; ) {
 		struct todo_item *item = &todo_list->items[i];