open isn't going to create a file (named IO::Tee=GLOB(0x123456) or anything else) when it wasn't asked to create a file. It returns the error "Invalid argument".

Not for me under 5.8.8:

$ ls
$ perl -Mstrict -MIO::Tee -le 'my $tee=IO::Tee->new(">/dev/null"); ope
+n(FH, ">&", \*$tee)'
$ ls
IO::Tee=GLOB(0x8802e2c)
$ perl -e 'printf "%vd\n", $^V'
5.8.8

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In reply to Re^3: Redirect to STDOUT and file by pilcrow
in thread Redirect to STDOUT and file by stevendel

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