My take on a slightly more concise Ruby version: 
s = "ZBBBCZZ"

x = s.scan(/((.)\2*)/).map{|v|v[0]}

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In reply to Re: Yet Another Rosetta Code Problem (Perl, Ruby, Python, Haskell, ...) by tadman
in thread Yet Another Rosetta Code Problem (Perl, Ruby, Python, Haskell, ...) by eyepopslikeamosquito

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