sub cprint {
    $capture ? (print @_) : push(@output,@_);
}
[download]

is short for

sub cprint {
    if($capture) {        # if $capture is != 0, '' or undef
        print @_;         # print what's passed in
    } else {              # otherwise
        push(@output,@_); # stuff goes into @output
    }
}
[download]

See the section Conditional Operator in perlop for $foo ? $bar : $quux.

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}