re: Flaw in %readfrom and %writeto

[erik quanstrom <quanstro@Infomkt.ibm.com>]

>Yep, that's right.  Don't most systems support /dev/fd these days,
>making the temp file kludge less necessary?

no. aix, for example. 

>> I actually never understood why $pid does not change in a forked subshell,
>> but that's a different matter.

>So you can do things like
>
>  { mumble > /tmp/poot.$pid } &
>  rm /tmp/poot.$pid
>
>and have them work on the same file.  Behavior inherited from /bin/sh.

why would you want that? if you really want that behavior,
then you can implement it by doing the floowing if subshells
change $pid

        parentPid = $pid

        { mumble > /tmp/poot.$parentPid } &
        rm /tmp/poot/$parentPid

i wrote my shell this way.