Displays little but pertinent information about an error

gistfile1.rb

module Error
  ProjectPath = "/Users/../analyse"
  
	def self.light
		message = "in #{($@.reverse[0..-1]).join(":\nin ")}
		in #{$@[0]}:\n\t#{$!} (#{$!.class})"
		message.gsub! ProjectPath, "$"
		message.gsub! /\n\t+/, "\n"
		puts
		puts message.split("\n")[-1]
		puts "\t" << message.split("\n")[-3..-2].join("\n\t")
	end
end