Hi Dave,

[...]

> The remaining issue that is relevant to the Pharo image (as opposed to
> OSProcess running on any other image) is this CommandShellTestCase  
> issue.

I'm not sure about this anymore. I just ran CommandShellTestCase a  
couple of times in a Squeak trunk image and the third time it also  
blocked on completionSemaphore. Do you see different problems on Linux?

> I think we are seeing different, but presumably related, symptoms of  
> some
> underlying problem. The tests in CommandShellTestCase do some rather  
> complex
> things with lots of processes, semaphore synchronization and so on.  
> So I
> think I will need to somehow whittle the problem down to some  
> simpler test
> that can provide some more reproduceable symptoms.

That would certainly be a good next step!

Cheers,
Adrian

[...]

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