- validate_re($setting_type, ['\Aconf\z', '\Apref\z', '\Alist\z'], "apt::setting resource name/title must start with either 'conf-', 'pref-' or 'list-'")
-
- unless is_integer($priority) {
- # need this to allow zero-padded priority.
- validate_re($priority, '^\d+$', 'apt::setting priority must be an integer or a zero-padded integer')