module ColorfulExceptions

# File lib/colorful-exceptions.rb, line 2
def backtrace
  value = super
  if value
    green  = "\e[#{32}m"
    cyan   = "\e[#{36}m"
    clear = "\e[0m"
    value.map do |msg|
      case msg
      when %r[\A(.*?):(\d+):in `(.*)'\z]
        "#{green}#{$1}#{clear}:#{green}#{$2}#{clear}: in `#{cyan}#{$3}#{clear}'"
      # Never seen them, but documentation insists they exist
      when %r[\A(.*?):(\d+)]
        "#{green}#{$1}#{clear}:#{green}#{$2}#{clear}"
      else
        "#{green}#{msg}#{clear}"
      end
    end
  else
    value
  end
end