process substitution

[Ralf Goertz]

Hi,

is it possible to have a process substitution with both input and output
redirection? So far I use the following work-around

> cat parentprocess.sh:
#!/bin/bash
mkfifo fifo 2>/dev/null
exec 5> >(./subprocess.sh > fifo)
exec 6< <(cat < fifo)
echo input to subprocess 1>&5
echo done sending input
sleep 1
while read -u 6 ; do
echo parent process read: $REPLY
done
exec 5>&-
echo about to exit parent process rm fifo

> cat subprocess.sh:
#!/bin/bash
echo subprocess start
read
sleep 1
echo read: $REPLY
echo subprocess end
>

Is there another way to do that, something like fork, which wouldn't use
a named pipe explicitely?

Ralf