Uri_parsing.Versioned_parserSourceLike Parser.check_ok_and_print_urls_or_errors but for Versioned_parser.
Are you migrating your site to use Url_var's Typed API and you don't want to break your existing links? Use of_non_typed_parser instead of first_parser.
Your site's first URL. Analogous to a list with one element.
Need to change your URL? Use new_parser to "fallback" to previous if the new parser can't recognize a URL. If previous success and parses into result, then f result will be returned. Analogous to cons in a list.
Like Parser.eval but for a 'a Versioned_parser.t.
Like Parser.eval_for_uri but for 'a Versioned_parser.t