bin/htmldiff in diff-lcs-1.5.0 vs bin/htmldiff in diff-lcs-1.5.1

@@ -1,13 +1,13 @@
 #! /usr/bin/env ruby -w
 # frozen_string_literal: true
 
-require 'diff/lcs'
-require 'diff/lcs/htmldiff'
+require "diff/lcs"
+require "diff/lcs/htmldiff"
 
 begin
-  require 'text/format'
+  require "text/format"
 rescue LoadError
   Diff::LCS::HTMLDiff.can_expand_tabs = false
 end
 
 if ARGV.size < 2 or ARGV.size > 3
@@ -22,10 +22,10 @@
 options = { :title => "diff #{ARGV[0]} #{ARGV[1]}" }
 
 htmldiff = Diff::LCS::HTMLDiff.new(left, right, options)
 
 if ARGV[2]
-  File.open(ARGV[2], 'w') do |f|
+  File.open(ARGV[2], "w") do |f|
     htmldiff.options[:output] = f
     htmldiff.run
   end
 else
   htmldiff.run