Your solution is actually incorrect on parsing any string which has a consecutive stretch of pound signs (ie '#') that is a multiple of 4 and greater than or equal to 8.

Try this: 
my $x = '@########@';

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it should parse as: 
    '',
    '####',
    '',

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Your solution (as you've hard coded it for one example, and admittedly so in your post), returns: 
   '',
   '###@'

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which would have been delimited as: 
'@#######@'

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That is, seven pound signs...

I ask you to please consider the original post as I dont think you are making your assertions with an understanding of what was asked. For example, the escape character itself must be escaped when created a delimited line. Hence the list: 
my @x = qw(## @ #);

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would be delimited as: 
'####@#@@##'

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Finally, I would be glad to verify your second claim if you can provide the input string upon which rollahead and unroll return different results. I believe such a string does not exist.

In reply to Re^2: Seeking Audience with the Perl Regex Droids... by mobiusinversion
in thread Seeking Audience with the Perl Regex Droids... by mobiusinversion

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