Re: waiting for process substitutions

[Chet Ramey]

On 8/5/24 11:00 PM, Zachary Santer wrote:
> On Mon, Aug 5, 2024 at 5:10 PM Chet Ramey <chet.ramey@case.edu> wrote:
> > But in the end, if you're waiting for a process that isn't going to
> > terminate, you're going to be waiting for a long time.
>
> So, even with wait without id arguments restricted to the final
> procsub, if its process id is the same as $!, it's still trivial to
> create a scenario where the call to wait will hang. Given that, I
> don't see the benefit over simply waiting for all process
> substitutions.

It's trivial to do a lot of things that may cause the shell to hang
besides trying to wait for a process that will never terminate. What
should the shell do about those?

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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