- (run/collecting fds pf ...)syntax
This form runs the pf form, redirecting each the file descriptors in the fds list to a separate tempfile, and waits for the process to complete.
The result of this expression is (status file ...). status is the exit status of the process. Each file entry is an opened input port for the temporary file that belongs to the file descriptor at the same offset in the fds list. If you close the port, the tempfile is removed.
See the SCSH documentation for an extended rationale of why this works the way it does.