I was using IPC::Open2 as a replacement for a pipe'd open and got caught under windows because it seems to open in binmode.

Two questions:

  1. Did I miss something in the docs about IPC::Open2 opening in binmode?
  2. Can someone help explain what in IPC::Open3 is resulting in binmode.
test.pl
#!perl -w print <<EOF; Line one line two line three EOF
test script
use IO::Handle; use IPC::Open2; open FH, "perl test.pl|" or die $!; while (<FH>) { chomp; print "test1:[$_]\n"; } close FH; my ( $rdrfh, $wtrfh ); my $pid = IPC::Open2::open2($rdrfh, $wtrfh, 'perl','test.pl' ); while (<$rdrfh>) { chomp; print "test2:[$_]\n"; } open FH, "perl test.pl|" or die $!; my $fd = IO::Handle->new_from_fd( fileno(FH), "r" ); while ( <$fd> ) { chomp; print "test3:[$_]\n"; }
Results in:
C:\WINDOWS\Desktop>perl t.pl test1:[Line one] test1:[line two] test1:[line three] ]est2:[Line one ]est2:[line two ]est2:[line three test3:[Line one] test3:[line two] test3:[line three]
I know I can solve this with:

binmode $rdrfh, ':crlf';
But is reading in binary mode expected behavior?

Another question is why I cannot specify "rb" as the MODE above.

Thanks,


In reply to Binmode and IPC::Open2 by Anonymous Monk

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