[Issue 17667] regex([r".", r"[\(\{[\]\}\)]"]);

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17667

--- Comment #1 from Dmitry Olshansky <dmitry.olsh at gmail.com> ---
This is a peculiar bug in that the first pattern is accepts invalid.
There is unbalanced grouping of [].

It interestingly goes undetected only to explode when combined with another
pattern.

Fix pending.

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