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gmas/gist:c1331ed9655bccf3bf61

Last active August 29, 2015 14:09
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gistfile1.rb
#ruby 2.0.0
%r{(?!.*\.{2}).*\w@}.match('[email protected]')
#=> nil
#ruby 2.1.4 - DOES NOT WORK
%r{(?!.*\.{2}).*\w@}.match('[email protected]')
#=> #<MatchData ".abc@">
#ruby 2.1.4 anchored - WORKS:
%r{^(?!.*\.{2}).*\w@}x.match('[email protected]')
#=> nil
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