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Capncavedan/gist:2170952

Created March 23, 2012 14:06
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Output set of numbers as ranges
Raw
gistfile1.txt
# courtesy of http://codepad.org/tBON208e
$_ = "1,2,3,8,9,12,15,17,18,19,20,21,22,23";
s/(?<!\d)(\d+)(?:,((??{$++1})))+(?!\d)/$1-$+/g;
print;
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