Re: "tee"ing my own stdout/stderr

[ikegami]

The tee created by open STDOUT, '|-', tee => $outfile will capture the output of children too, but it won't work well with a custom SIGINT handler.

The tee created by IO::Tee will work with a custom SIGINT handler, but it won't capture the output of executed children.

It sounds like you want to capture the output of children and use a custom SIGINT. Based on my testing, the following does that:

open(STDOUT, '|-',
    bash => (
        -c => 'trap "" INT ; tee -- "$0"',
        $outfile,
    )
) or die;

Update: Since this is a common problem, tee actually provides a fix for it in the form of -i:

open(STDOUT, '|-',
    tee => ( '-i', '--', $outfile )
) or die;

[conrad]

Rock. Yeah, that's exactly the issue. As I mentioned in my reply to salva above, it also seems to be possible to get around the problem by setting Perl's $SIG{INT} = 'IGNORE' before forking whichever processes will do your tee'ing, and setting your custom handler afterward. As ever, TMTOWTDI :)

Thanks!