Re: the state of the concurrency branch

[Tom Tromey]

>> Should be "while running some CPU-intensive Lisp".

Stefan> That indeed won't work.  True concurrency will take more work.

Even that can work ok if the lisp code calls thread-yield or sit-for;
the latter is friendly to do anyhow to let processes make progress.

We also have an intermediate step available between what is on the
branch and true concurrency: we can make QUIT call thread-yield
periodically.  This is basically what Python does.

Tom