Convert Entire Ruby Project Hash Syntax to 1.9 ( :sym => value to sym: value )

convert_ruby_hash_syntax_to_1.9.2.rb

Dir['**/*.rb', '**/*.rake'].each { |f|
  s = open(f).read
  awesome_rx = /(?<!return)(?<!:)(?<!\w)(\s+):(\w+)\s*=>/
  count = s.scan(awesome_rx).length
  next if count.zero?
  s.gsub!(awesome_rx, '\1\2:')
  puts "#{count} replacements @ #{f}"
  open(f, 'w') { |b| b << s }
}

http://devign.me/convert-ruby-file-hash-syntax-to-1-9/