Add bin and edit workflow

bin/gems/rainbow-3.1.1/lib/rainbow/string_utils.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Rainbow
+  class StringUtils
+    def self.wrap_with_sgr(string, codes)
+      return string if codes.empty?
+
+      seq = "\e[" + codes.join(";") + "m"
+
+      string = string.sub(/^(\e\[([\d;]+)m)*/) { |m| m + seq }
+
+      return string if string.end_with? "\e[0m"
+
+      string + "\e[0m"
+    end
+
+    def self.uncolor(string)
+      # See http://www.commandlinefu.com/commands/view/3584/remove-color-codes-special-characters-with-sed
+      string.gsub(/\e\[[0-9;]*m/, '')
+    end
+  end
+end