That doesn't work as is? 

#! perl -slw
use strict;

sub compatible {
    my ($s1, $s2) = @_;
    y/_/\0/c for $s1, $s2;
    !(($s1 | $s2)=~y/\0//);
}

printf "%s v %s ? %s\n", @$_, compatible( @$_ ) ? 1 : 0 
    for [ qw[ _8__3__19 48____7__ ] ],  # good
        [ qw[ _8__3__19 4_8___7__ ] ],  # bad
        [ qw[ _8__3__19 48_____7_ ] ];  # bad
        
__END__
[11:18:29.65] P:\test>test
_8__3__19 v 48____7__ ? 0
_8__3__19 v 4_8___7__ ? 1
_8__3__19 v 48_____7_ ? 0

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Examine what is said, not who speaks.
Silence betokens consent.
Love the truth but pardon error.

In reply to Re^2: Comparison by position and value by BrowserUk
in thread Comparison by position and value by BrowserUk

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