You don't need to make that a non-capturing parenthesis, nor resort to lookahead/lookbehind trickery; a simple word boundary will do. Very nice trick with $+, though ;) 
# 27 + 40 + 2 = 69 dude!
sub num2range {
#234567890123456789012345678901234567890 
my$x=join',',sort{$a-$b}@_; 
$x=~s/\b(\d+)(,((??{$++1})))+\b/$1-$+/g; 
$x 
}

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In reply to Re: Re: (Golf) Rangify Array by kilinrax
in thread (Golf) Rangify Array by demerphq

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