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> Regexes often contain complex parts that repeat themselves throughout the regex or can be combined into higher level patterns.

sounds like a parser use case.

One of the coolest things about Raku/Perl6 was how it made grammars a first-class citizen, like how Perl 5 made regexes a first-class citizen.

That reminds me of that nice article about how to do that kind of thing in python

[0] The unreasonable effectiveness of f-strings and re.verbose https://news.ycombinator.com/item?id=31457188

You make it sound as if regex don't have this ability, but they already do.

If supported, you can use verbose flag and subexpression calls for such cases.

From a cursory glance, I found only the numeric `range` support the standout feature I'd want in existing regex support.