On Tue, 23 Sep 2008, Shlomi Fish wrote: > BTW, can anyone tell me why open FH, '|-', @list, and open FH, '-|', @list are > not supported on Windows? Because Nick Ing-Simmons didn't have the tuits to implement it: http://www.nntp.perl.org/group/perl.perl5.porters/2002/06/msg60897.html It is not clear to me why you need to implement it using pseudo-fork; it should be possible to do it using do_aspawn(). Paul Fenwick wanted to look into this, but I'm not sure he got around to it either: http://www.nntp.perl.org/group/perl.perl5.porters/2007/07/msg126377.html Cheers, -Jan