Marius Vollmer <mvo@zagadka.de> writes:
>
> Can you make that change?

Yep, applied.

I realized I botched the first effort actually, didn't pay attention
to the comment ...

        * popen.scm (open-process): Correction to previous fdes closing
        change, need to watch out for stdin==stderr or stdout==stderr.

I added some tests, both of this and of the original problem.