Function is_root_ref

refs.c:915–939

}

int is_root_ref(const char *refname)
{
	static const char *const irregular_root_refs[] = {
		"HEAD",
		"AUTO_MERGE",
		"BISECT_EXPECTED_REV",
		"NOTES_MERGE_PARTIAL",
		"NOTES_MERGE_REF",
		"MERGE_AUTOSTASH",
	};
	size_t i;

	if (!is_root_ref_syntax(refname) ||
	    is_pseudo_ref(refname))
		return 0;

	if (ends_with(refname, "_HEAD"))
		return 1;

	for (i = 0; i < ARRAY_SIZE(irregular_root_refs); i++)
		if (!strcmp(refname, irregular_root_refs[i]))
			return 1;

	return 0;
}

static int is_current_worktree_ref(const char *ref) {
	return is_root_ref_syntax(ref) || is_per_worktree_ref(ref);