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"Soni "They/Them" L." <>:
> Custom literals:
> local foo = u128"10000000000000000000000000000000000000"
> local bar = re"[A-Za-z_][A-Za-z0-9_]*"

Hm, yes. That is useful.
Also, in these examples the function call actually looks like a literal prefix.
If such convention is followed, it really is obvious what the code does.

Fun fact:

> "%02X":format(42)
> -- Error
> function s(v) return v end
> s"%02X":format(42)
> -- "2A"

So… I guess it does not make much sense to force use of parentheses for method calls only around "primitive" string literals.

-- Evgeniy Zhabotinskiy