in reply to Re^2: "- |" pipe option doesn't work
in thread "- |" pipe option doesn't work

I don't have a Win32 machine available now, but perlport in blead contains a slightly reformulated version of the same:
open (Win32, RISC OS) Open modes "|-" and "-|" are unsupported.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,