Add frozen_string_literal: false for all files

When you change this to true, you may need to add more tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/English.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #  Include the English library file in a Ruby script, and you can
 #  reference the global variables such as \VAR{\$\_} using less
 #  cryptic names, listed in the following table.% \vref{tab:english}.

lib/abbrev.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #--
 # Copyright (c) 2001,2003 Akinori MUSHA <knu@iDaemons.org>
 #

lib/base64.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # = base64.rb: methods for base64-encoding and -decoding strings
 #

lib/benchmark.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #--
 # benchmark.rb - a performance benchmarking library
 #

lib/cgi.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # cgi.rb - cgi support library
 #

lib/cgi/cookie.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'cgi/util'
 class CGI
   # Class representing an HTTP cookie.

lib/cgi/core.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #--
 # Methods for generating HTML, parsing CGI-related parameters, and
 # generating HTTP responses.

lib/cgi/html.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class CGI
   # Base module for HTML-generation mixins.
   #

lib/cgi/session.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # cgi/session.rb - session support for cgi scripts
 #

lib/cgi/session/pstore.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # cgi/session/pstore.rb - persistent storage of marshalled session data
 #

lib/cgi/util.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class CGI; module Util; end; extend Util; end
 module CGI::Util
   @@accept_charset="UTF-8" unless defined?(@@accept_charset)

lib/cmath.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 ##
 # = Trigonometric and transcendental functions for complex numbers.
 #

lib/debug.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Copyright (C) 2000  Network Applied Communication Laboratory, Inc.
 # Copyright (C) 2000  Information-technology Promotion Agency, Japan
 # Copyright (C) 2000-2003  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>

lib/delegate.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # = delegate -- Support for the Delegation Pattern
 #
 # Documentation by James Edward Gray II and Gavin Sinclair

lib/drb.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: false
 require 'drb/drb'
 

lib/drb/acl.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Copyright (c) 2000,2002,2003 Masatoshi SEKI
 #
 # acl.rb is copyrighted free software by Masatoshi SEKI.

lib/drb/drb.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # = drb/drb.rb
 #

lib/drb/eq.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module DRb
   class DRbObject # :nodoc:
     def ==(other)

lib/drb/extserv.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 =begin
  external service
         Copyright (c) 2000,2002 Masatoshi SEKI

lib/drb/extservm.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 =begin
  external service manager
         Copyright (c) 2000 Masatoshi SEKI

lib/drb/gw.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'drb/drb'
 require 'monitor'
 

lib/drb/invokemethod.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # for ruby-1.8.0
 
 module DRb # :nodoc: all

lib/drb/observer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'observer'
 
 module DRb

lib/drb/ssl.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'socket'
 require 'openssl'
 require 'drb/drb'

lib/drb/timeridconv.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'drb/drb'
 require 'monitor'
 

lib/drb/unix.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'socket'
 require 'drb/drb'
 require 'tmpdir'

lib/e2mmap.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #--
 #   e2mmap.rb - for Ruby 1.1

lib/erb.rb

@@ -1,4 +1,5 @@
 # -*- coding: us-ascii -*-
+# frozen_string_literal: false
 # = ERB -- Ruby Templating
 #
 # Author:: Masatoshi SEKI

lib/fileutils.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # = fileutils.rb
 #

lib/find.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # find.rb: the Find module for processing all files under a given directory.
 #

lib/forwardable.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   forwardable.rb -
 #       $Release Version: 1.1$

lib/getoptlong.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # GetoptLong for Ruby
 #

lib/ipaddr.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # ipaddr.rb - A class to manipulate an IP address
 #

lib/irb.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb.rb - irb main module
 #       $Release Version: 0.9.6 $

lib/irb/cmd/chws.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   change-ws.rb -
 #   	$Release Version: 0.9.6$

lib/irb/cmd/fork.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   fork.rb -
 #   	$Release Version: 0.9.6 $

lib/irb/cmd/help.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   help.rb - helper using ri
 #   	$Release Version: 0.9.6$

lib/irb/cmd/load.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   load.rb -
 #   	$Release Version: 0.9.6$

lib/irb/cmd/nop.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   nop.rb -
 #   	$Release Version: 0.9.6$

lib/irb/cmd/pushws.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   change-ws.rb -
 #   	$Release Version: 0.9.6$

lib/irb/cmd/subirb.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #   multi.rb -
 #   	$Release Version: 0.9.6$
 #   	$Revision$

lib/irb/completion.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/completor.rb -
 #   	$Release Version: 0.9$

lib/irb/context.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/context.rb - irb context
 #   	$Release Version: 0.9.6$

lib/irb/ext/change-ws.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/ext/cb.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/history.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   history.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/loader.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   loader.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/math-mode.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   math-mode.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/multi-irb.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/multi-irb.rb - multiple irb module
 #   	$Release Version: 0.9.6$

lib/irb/ext/save-history.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #   save-history.rb -
 #   	$Release Version: 0.9.6$
 #   	$Revision$

lib/irb/ext/tracer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/lib/tracer.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/use-loader.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   use-loader.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ext/workspaces.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   push-ws.rb -
 #   	$Release Version: 0.9.6$

lib/irb/extend-command.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/extend-command.rb - irb extend command
 #   	$Release Version: 0.9.6$

lib/irb/frame.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   frame.rb -
 #   	$Release Version: 0.9$

lib/irb/help.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/help.rb - print usage module
 #   	$Release Version: 0.9.6$

lib/irb/init.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/init.rb - irb initialize module
 #   	$Release Version: 0.9.6$

lib/irb/input-method.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/input-method.rb - input methods used irb
 #   	$Release Version: 0.9.6$

lib/irb/inspector.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/inspector.rb - inspect methods
 #   	$Release Version: 0.9.6$

lib/irb/lc/error.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/lc/error.rb -
 #   	$Release Version: 0.9.6$

lib/irb/lc/ja/encoding_aliases.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # :stopdoc:
 module IRB
   class Locale

lib/irb/lc/ja/error.rb

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+# frozen_string_literal: false
 #   irb/lc/ja/error.rb -
 #   	$Release Version: 0.9.6$
 #   	$Revision$

lib/irb/locale.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/locale.rb - internationalization module
 #   	$Release Version: 0.9.6$

lib/irb/magic-file.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module IRB
   class << (MagicFile = Object.new)
     # see parser_magic_comment in parse.y

lib/irb/notifier.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   notifier.rb - output methods used by irb
 #   	$Release Version: 0.9.6$

lib/irb/output-method.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   output-method.rb - output methods used by irb
 #   	$Release Version: 0.9.6$

lib/irb/ruby-lex.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/ruby-lex.rb - ruby lexcal analyzer
 #   	$Release Version: 0.9.6$

lib/irb/ruby-token.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/ruby-token.rb - ruby tokens
 #   	$Release Version: 0.9.6$

lib/irb/slex.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/slex.rb - simple lex analyzer
 #   	$Release Version: 0.9.6$

lib/irb/src_encoding.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # DO NOT WRITE ANY MAGIC COMMENT HERE.
 def default_src_encoding
   return __ENCODING__

lib/irb/version.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/version.rb - irb version definition file
 #   	$Release Version: 0.9.6$

lib/irb/workspace.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/workspace-binding.rb -
 #   	$Release Version: 0.9.6$

lib/irb/ws-for-case-2.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   irb/ws-for-case-2.rb -
 #   	$Release Version: 0.9.6$

lib/irb/xmp.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   xmp.rb - irb version of gotoken xmp
 #   	$Release Version: 0.9$

lib/logger.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # logger.rb - simple logging utility
 # Copyright (C) 2000-2003, 2005, 2008, 2011  NAKAMURA, Hiroshi <nahi@ruby-lang.org>.
 #

lib/mathn.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #--
 # $Release Version: 0.5 $
 # $Revision: 1.1.1.1.4.1 $

lib/matrix.rb

@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: false
 #
 # = matrix.rb
 #

lib/matrix/eigenvalue_decomposition.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class Matrix
   # Adapted from JAMA: http://math.nist.gov/javanumerics/jama/
 

lib/matrix/lup_decomposition.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class Matrix
   # Adapted from JAMA: http://math.nist.gov/javanumerics/jama/
 

lib/mkmf.rb

@@ -1,4 +1,5 @@
 # -*- coding: us-ascii -*-
+# frozen_string_literal: false
 # frozen-string-literal: false
 # module to create Makefile for extension modules
 # invoke like: ruby -r mkmf extconf.rb

lib/monitor.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # = monitor.rb
 #
 # Copyright (C) 2001  Shugo Maeda <shugo@ruby-lang.org>

lib/mutex_m.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 #   mutex_m.rb -
 #       $Release Version: 3.0$

lib/net/http.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # = net/http.rb
 #

lib/net/http/backward.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # for backward compatibility
 
 # :enddoc:

lib/net/http/exceptions.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Net::HTTP exception class.
 # You cannot use Net::HTTPExceptions directly; instead, you must use
 # its subclasses.

lib/net/http/generic_request.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTPGenericRequest is the parent of the HTTPRequest class.
 # Do not use this directly; use a subclass of HTTPRequest.
 #

lib/net/http/header.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # The HTTPHeader module defines methods for reading and writing
 # HTTP headers.
 #

lib/net/http/proxy_delta.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Net::HTTP::ProxyDelta   #:nodoc: internal use only
   private
 

lib/net/http/request.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTP request class.
 # This class wraps together the request header and the request path.
 # You cannot use this class directly. Instead, you should use one of its

lib/net/http/requests.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # HTTP/1.1 methods --- RFC2616
 #

lib/net/http/response.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTP response class.
 #
 # This class wraps together the response header and the response body (the

lib/net/http/responses.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # :stopdoc:
 class Net::HTTPUnknownResponse < Net::HTTPResponse
   HAS_BODY = true

lib/net/https.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 =begin
 
 = net/https -- SSL/TLS enhancement for Net::HTTP.

lib/net/pop.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # = net/pop.rb
 #
 # Copyright (c) 1999-2007 Yukihiro Matsumoto.

lib/net/protocol.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # = net/protocol.rb
 #

lib/net/smtp.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # = net/smtp.rb
 #
 # Copyright (c) 1999-2007 Yukihiro Matsumoto.

lib/observer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # Implementation of the _Observer_ object-oriented design pattern.  The
 # following documentation is copied, with modifications, from "Programming

lib/optionparser.rb

@@ -1 +1,2 @@
+# frozen_string_literal: false
 require_relative 'optparse'

lib/optparse.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # optparse.rb - command-line option analysis with the OptionParser class.
 #

lib/optparse/ac.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'optparse'
 
 class OptionParser::AC < OptionParser

lib/optparse/date.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'optparse'
 require 'date'