Constant URL_WWW_STR 

pub const URL_WWW_STR: &str = "www\\.(?:[a-zA-Z0-9][-a-zA-Z0-9]*\\.)+[a-zA-Z]{2,}(?::\\d+)?(?:/[^\\s<>\\[\\]\\\\\'\\\"`]*)?(?:\\?[^\\s<>\\[\\]\\\\\'\\\"`]*)?(?:#[^\\s<>\\[\\]\\\\\'\\\"`]*)?";

Pattern for www URLs without protocol.

Matches URLs starting with www. that lack a protocol prefix. These should be converted to proper URLs or flagged as bare URLs. Supports port, path, query string, and fragment like URL_STANDARD_STR.

Examples

• www.example.com
• www.example.com:8080
• www.example.com/path
• www.example.com?query=value
• www.example.com#section