Build, test, and debug regular expressions
Matches URLs or domain names in text, starting with a word boundary. It optionally captures an http:// or https:// scheme, then requires one or more dot-separated letter sequences (case-insensitive, e.g., 'www.example.'), followed by any run of non-whitespace, non-comma characters. Useful for extracting links or domains like 'https://www.example.com/page' or 'example.com' from unstructured text, though it may match false positives.