[Issue 14953] std.concurrency: Add function to flush message box

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14953

--- Comment #8 from Chris <wendlec at tcd.ie> ---
That's perfectly all right. It should be thread local, because it only concerns
the thread in question. But the programmer should have control over any local
thread. At the moment it's a bit like as if a thread was a higher being and had
a life of its own and you're not meant to interfere with it. However, threads
are part of a program's logic and programmers should be able to control them
just as they control the main thread.

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