[Issue 11784] std.regex: bug in set intersection

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11784

--- Comment #2 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/1fa74e5d895b94005347ae959772613ac9fe90b2
fix issue 11784

Actually add a test case, the issue was fixed as part of the set
of commits that precede this one.

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