PCRE has the DEFINE keyword. Here's an example: https://regex101.com/library/gJ7pU0 https://regex101.com/library/gJ7pU0 (not to be confused with named capture

PCRE has the DEFINE keyword. Here's an example: https://regex101.com/library/gJ7pU0 https://regex101.com/library/gJ7pU0 (not to be confused with named capture groups)