Re: [PATCH] tee: Add --pipe-check to allow instantly detecting closed outputs

[Pádraig Brady]

On 29/11/2022 21:48, Carl Edquist wrote:
> Or perhaps when you mention "inducing SIGPIPE", you are referring to how
> tail(1) does things currently (when it detects a broken output), by
> attempting raise(SIGPIPE) followed by exit(EXIT_FAILURE).

Yes this is what I was alluding to.

> It seems this
> is just an attempt to make it look to the waiting parent process that tail
> died trying to write to a broken pipe (somewhat of a white lie).  Most
> likely it could just exit(EXIT_FAILURE) without confusing the caller.

Right yes we probably should not add this into the mix
and just exit() as tee(1) does now for this case.

> ... Sorry to see the poll thing is complicated by cross-platform behavior
> differences  :(

Yes that is a pain :(

> My apologies for the long email...  Hopefully some food for thought! :)

All useful and valid points.
Thanks for taking the time to detail them.

cheers,
Pádraig