pub const URL_QUICK_CHECK_STR: &str = r#"(?:https?|ftps?|ftp|xmpp)://|xmpp:|@|www\."#;Expand description
Quick check pattern for early exits.
Use this for fast pre-filtering before running more expensive patterns.
Matches if the text likely contains a URL or email address.
Includes xmpp: for GFM extended autolinks.