note Anonymous Monk <P><I>Am I missing something?</i> <P><C>$ perl -le " print for map { fileno $_ } \*STDIN, \*STDOUT, \*STDERR " 0 1 2 </C> <P>There is nothing you can do to change the fileno of STDIN/STDOUT/STDERR on a c-level on win32, they're always 0 1 2, so any c code printing on STDERR is printing on 2, always <P>To capture STDERR you have to launch a process, or <P>Patch XS module to use perl functions for printing to stderr ([doc://perlclib]), so that when you redirect STDERR/STDOUT (like using [mod://IO::NestedCapture]), it notices 929318 930769 1