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05:48
Oh, of course. Didn't even think that it might be considering it a variable name in the middle of a pattern like that
 
16 hours later…
21:35
@Grimy Think it's possible to implement Euler's totient function in ECMA, ECMA+(?*), or ECMA 2018?
22:06
afaict ECMA 2018 doesn’t give any extra power over ECMA
and yes, that looks probably possible in ECMA
22:20
@Grimy No, it adds lookbehind (variable-length).
Well, please share any ideas you have on how it could be possible.
So ECMA 2018 is a superset of ECMA+(?*), because variable-length lookbehind can do everything (?*) can do and more.
Have you not been viewing my regex answers? In several of them I used the variable-length lookbehind of ECMA 2018 and named the language as "Regex (ECMAScript 2018)".
oh i did not realize it would be variable length, this is indeed new power
It's not just variable-length, it's right-to-left evaluative. So it's efficient too.

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