# File lib/thor/actions/file_manipulation.rb, line 188 def gsub_file(path, flag, *args, &block) return unless behavior == :invoke config = args.last.is_a?(Hash) ? args.pop : {} path = File.expand_path(path, destination_root) say_status :gsub, relative_to_original_destination_root(path), config.fetch(:verbose, true) unless options[:pretend] content = File.binread(path) content.gsub!(flag, *args, &block) File.open(path, 'wb') { |file| file.write(content) } end end