* lib/*.rb: Remove unused variable warnings.

Patch by Run Paint [ruby-core:30991]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Tue Nov  9 05:54:57 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
+
+	* lib/*.rb: Remove unused variable warnings.
+	  Patch by Run Paint [ruby-core:30991]
+
+	* lib/rubygems/*, lib/rdoc/*.rb, lib/rake/*.rb: ditto
+
 Mon Nov  8 18:26:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* util.c (ruby_hdtoa): fix type cast and bufsize.

lib/benchmark.rb

@@ -558,16 +558,16 @@ if __FILE__ == $0
   n = ARGV[0].to_i.nonzero? || 50000
   puts %Q([#{n} times iterations of `a = "1"'])
   benchmark("       " + CAPTION, 7, FMTSTR) do |x|
-    x.report("for:")   {for i in 1..n; a = "1"; end} # Benchmark::measure
+    x.report("for:")   {for _ in 1..n; _ = "1"; end} # Benchmark::measure
-    x.report("times:") {n.times do   ; a = "1"; end}
+    x.report("times:") {n.times do   ; _ = "1"; end}
-    x.report("upto:")  {1.upto(n) do ; a = "1"; end}
+    x.report("upto:")  {1.upto(n) do ; _ = "1"; end}
   end
 
   benchmark do
     [
-      measure{for i in 1..n; a = "1"; end},  # Benchmark::measure
+      measure{for _ in 1..n; _ = "1"; end},  # Benchmark::measure
-      measure{n.times do   ; a = "1"; end},
+      measure{n.times do   ; _ = "1"; end},
-      measure{1.upto(n) do ; a = "1"; end}
+      measure{1.upto(n) do ; _ = "1"; end}
     ]
   end
 end

lib/drb/ssl.rb

@@ -122,7 +122,7 @@ module DRb
     end
 
     def self.open(uri, config)
-      host, port, option = parse_uri(uri)
+      host, port, = parse_uri(uri)
       host.untaint
       port.untaint
       soc = TCPSocket.open(host, port)
@@ -134,7 +134,7 @@ module DRb
 
     def self.open_server(uri, config)
       uri = 'drbssl://:0' unless uri
-      host, port, opt = parse_uri(uri)
+      host, port, = parse_uri(uri)
       if host.size == 0
         host = getservername
         soc = open_server_inaddr_any(host, port)

lib/drb/timeridconv.rb

@@ -64,7 +64,7 @@ module DRb
       def keeper
 	Thread.new do
 	  loop do
-	    size = alternate
+	    alternate
 	    sleep(@timeout)
 	  end
 	end

lib/drb/unix.rb

@@ -19,14 +19,14 @@ module DRb
     end
 
     def self.open(uri, config)
-      filename, option = parse_uri(uri)
+      filename, = parse_uri(uri)
       filename.untaint
       soc = UNIXSocket.open(filename)
       self.new(uri, soc, config)
     end
 
     def self.open_server(uri, config)
-      filename, option = parse_uri(uri)
+      filename, = parse_uri(uri)
       if filename.size == 0
 	soc = temp_server
         filename = soc.path

lib/irb/ext/multi-irb.rb

@@ -29,12 +29,12 @@ module IRB
     end
 
     def thread(key)
-      th, irb = search(key)
+      th, = search(key)
       th
     end
 
     def irb(key)
-      th, irb = search(key)
+      _, irb = search(key)
       irb
     end
 
@@ -62,7 +62,7 @@ module IRB
 
     def kill(*keys)
       for key in keys
-	th, irb = search(key)
+	th, _ = search(key)
 	IRB.fail IrbAlreadyDead unless th.alive?
 	th.exit
       end

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

@@ -10,5 +10,5 @@
 #
 
 while true
-  IRB::BINDING_QUEUE.push b = binding
+  IRB::BINDING_QUEUE.push _ = binding
 end

lib/net/ftp.rb

@@ -322,7 +322,7 @@ module Net
       sock = TCPServer.open(@sock.addr[3], 0)
       port = sock.addr[1]
       host = sock.addr[3]
-      resp = sendport(host, port)
+      sendport(host, port)
       return sock
     end
     private :makeport

lib/net/http.rb

@@ -1563,7 +1563,7 @@ module Net   #:nodoc:
     # or sub-type is not given (e.g. "Content-Type: text").
     def sub_type
       return nil unless @header['content-type']
-      main, sub = *self['Content-Type'].split(';').first.to_s.split('/')
+      _, sub = *self['Content-Type'].split(';').first.to_s.split('/')
       return nil unless sub
       sub.strip
     end

lib/net/imap.rb

@@ -2680,7 +2680,6 @@ module Net
         token = match(T_ATOM)
         name = token.value.upcase
         match(T_SPACE)
-        mailbox = astring
         data = []
         token = lookahead
         if token.symbol == T_SPACE

lib/racc/parser.rb

@@ -105,13 +105,12 @@ module Racc
 
     def _racc_do_parse_rb(arg, in_debug)
       action_table, action_check, action_default, action_pointer,
-      goto_table,   goto_check,   goto_default,   goto_pointer,
+      _,            _,            _,              _,
-      nt_base,      reduce_table, token_table,    shift_n,
+      _,            _,            token_table,    _,
-      reduce_n,     use_result,   * = arg
+      _,            _,            * = arg
 
       _racc_init_sysvars
       tok = act = i = nil
-      nerr = 0
 
       catch(:racc_end_parse) {
         while true
@@ -154,14 +153,13 @@ module Racc
 
     def _racc_yyparse_rb(recv, mid, arg, c_debug)
       action_table, action_check, action_default, action_pointer,
-      goto_table,   goto_check,   goto_default,   goto_pointer,
+      _,             _,            _,              _,
-      nt_base,      reduce_table, token_table,    shift_n,
+      _,            _,            token_table,    _,
-      reduce_n,     use_result,   * = arg
+      _,            _,            * = arg
 
       _racc_init_sysvars
       act = nil
       i = nil
-      nerr = 0
 
       catch(:racc_end_parse) {
         until i = action_pointer[@racc_state[-1]]
@@ -210,10 +208,10 @@ module Racc
     ###
 
     def _racc_evalact(act, arg)
-      action_table, action_check, action_default, action_pointer,
+      action_table, action_check, _, action_pointer,
-      goto_table,   goto_check,   goto_default,   goto_pointer,
+      _,   _, _, _,
-      nt_base,      reduce_table, token_table,    shift_n,
+      _,   _, _, shift_n,  reduce_n,
-      reduce_n,     use_result,   * = arg
+      _,   _, * = arg
       nerr = 0   # tmp
 
       if act > 0 and act < shift_n
@@ -305,10 +303,10 @@ module Racc
     end
 
     def _racc_do_reduce(arg, act)
-      action_table, action_check, action_default, action_pointer,
+      _, _, _, _,
       goto_table,   goto_check,   goto_default,   goto_pointer,
-      nt_base,      reduce_table, token_table,    shift_n,
+      nt_base,      reduce_table, _,    _,
-      reduce_n,     use_result,   * = arg
+      _,     use_result,   * = arg
       state = @racc_state
       vstack = @racc_vstack
       tstack = @racc_tstack

lib/rexml/attribute.rb

@@ -115,7 +115,7 @@ module REXML
     def doctype
       if @element
         doc = @element.document
-        doctype = doc.doctype if doc
+        doc.doctype if doc
       end
     end
 

lib/rexml/child.rb

@@ -88,7 +88,7 @@ module REXML
 
     # This doesn't yet handle encodings
     def bytes
-      encoding = document.encoding
+      document.encoding
 
       to_s
     end

lib/rexml/doctype.rb

@@ -115,7 +115,6 @@ module REXML
       output << " #{@long_name.inspect}" if @long_name
       output << " #{@uri.inspect}" if @uri
       unless @children.empty?
-        next_indent = indent + 1
         output << ' ['
         @children.each { |child|
           output << "\n"

lib/rexml/element.rb

@@ -874,7 +874,6 @@ module REXML
     #  a.elements.add(Element.new('b'))  #-> <a><b/></a>
     #  a.elements.add('c')               #-> <a><b/><c/></a>
     def add element=nil
-      rv = nil
       if element.nil?
         Element.new("", self, @element.context)
       elsif not element.kind_of?(Element)
@@ -1092,7 +1091,7 @@ module REXML
         delete attr
         return
       end
-      element_document = @element.document
+
       unless value.kind_of? Attribute
         if @element.document and @element.document.doctype
           value = Text::normalize( value, @element.document.doctype )
@@ -1197,7 +1196,7 @@ module REXML
         return @element
       else # the supplied attribute is a top-level one
         attr = old
-        res = super(name)
+        super(name)
       end
       @element
     end

lib/rexml/formatters/transitive.rb

@@ -37,7 +37,6 @@ module REXML
           # If compact and all children are text, and if the formatted output
           # is less than the specified width, then try to print everything on
           # one line
-          skip = false
           @level += @indentation
           node.children.each { |child|
             write( child, output )

lib/rexml/functions.rb

@@ -170,7 +170,6 @@ module REXML
     # Kouhei fixed this too
     def Functions::substring_after( string, test )
       ruby_string = string(string)
-      test_string = string(test)
       return $1 if ruby_string =~ /#{test}(.*)/
       ""
     end

lib/rexml/parsers/sax2parser.rb

@@ -87,7 +87,7 @@ module REXML
         @listeners.each { |sym,match,block|
           block.start_document if sym == :start_document or sym.nil?
         }
-        root = context = []
+        context = []
         while true
           event = @parser.pull
           case event[0]

lib/rexml/parsers/xpathparser.rb

@@ -282,7 +282,6 @@ module REXML
       PI        = /^processing-instruction\(/
       def NodeTest path, parsed
         #puts "NodeTest with #{path}"
-        res = nil
         case path
         when /^\*/
           path = $'
@@ -578,7 +577,6 @@ module REXML
       NUMBER              = /^(\d*\.?\d+)/
       NT        = /^comment|text|processing-instruction|node$/
       def PrimaryExpr path, parsed
-        arry = []
         case path
         when VARIABLE_REFERENCE
           varname = $1

lib/rexml/quickpath.rb

@@ -33,7 +33,6 @@ module REXML
         results = filter(element.to_a, path)
       when /^[\[!\w:]/u
         # match on child
-        matches = []
         children = element.to_a
         results = filter(children, path)
       else
@@ -51,8 +50,6 @@ module REXML
       when /^\/\//u											# Descendant
         return axe( elements, "descendant-or-self", $' )
       when /^\/?\b(\w[-\w]*)\b::/u							# Axe
-        axe_name = $1
-        rest = $'
         return axe( elements, $1, $' )
       when /^\/(?=\b([:!\w][-\.\w]*:)?[-!\*\.\w]*\b([^:(]|$)|\*)/u	# Child
         rest = $'

lib/rexml/validation/validation.rb

@@ -33,7 +33,7 @@ module REXML
             sattr = [:start_attribute, nil]
             eattr = [:end_attribute]
             text = [:text, nil]
-            k,v = event[2].find { |key,value|
+            k, = event[2].find { |key,value|
               sattr[1] = key
               #puts "Looking for #{sattr.inspect}"
               m = @current.next( sattr )

lib/rexml/xpath_parser.rb

@@ -687,7 +687,7 @@ module REXML
           return rv
         else
           res = []
-          enum = SyncEnumerator.new( set1, set2 ).each { |i1, i2|
+          SyncEnumerator.new( set1, set2 ).each { |i1, i2|
             #puts "i1 = #{i1.inspect} (#{i1.class.name})"
             #puts "i2 = #{i2.inspect} (#{i2.class.name})"
             i1 = norm( i1 )

lib/rinda/ring.rb

@@ -198,7 +198,7 @@ module Rinda
     def lookup_ring_any(timeout=5)
       queue = Queue.new
 
-      th = Thread.new do
+      Thread.new do
 	self.lookup_ring(timeout) do |ts|
 	  queue.push(ts)
 	end
@@ -252,7 +252,7 @@ if __FILE__ == $0
   when 's'
     require 'rinda/tuplespace'
     ts = Rinda::TupleSpace.new
-    place = Rinda::RingServer.new(ts)
+    Rinda::RingServer.new(ts)
     $stdin.gets
   when 'w'
     finger = Rinda::RingFinger.new(nil)

lib/rss/atom.rb

@@ -527,7 +527,7 @@ module RSS
             return false unless inline_other?
             return false if inline_other_xml?
 
-            media_type, subtype = mime_split
+            media_type, = mime_split
             return true if "text" == media_type.downcase
             false
           end

lib/rss/maker/0.9.rb

@@ -24,7 +24,7 @@ module RSS
       class Channel < ChannelBase
         def to_feed(rss)
           channel = Rss::Channel.new
-          set = setup_values(channel)
+          setup_values(channel)
           _not_set_required_variables = not_set_required_variables
           if _not_set_required_variables.empty?
             rss.channel = channel
@@ -257,7 +257,7 @@ module RSS
         class Item < ItemBase
           def to_feed(rss)
             item = Rss::Channel::Item.new
-            set = setup_values(item)
+            setup_values(item)
             _not_set_required_variables = not_set_required_variables
             if _not_set_required_variables.empty?
               rss.items << item

lib/rss/maker/1.0.rb

@@ -32,7 +32,7 @@ module RSS
             _not_set_required_variables = not_set_required_variables
             if _not_set_required_variables.empty?
               channel = RDF::Channel.new(@about)
-              set = setup_values(channel)
+              setup_values(channel)
               channel.dc_dates.clear
               rss.channel = channel
               set_parent(channel, rss)

lib/rss/maker/dublincore.rb

@@ -11,10 +11,7 @@ module RSS
           plural_name ||= "#{name}s"
           full_name = "#{RSS::DC_PREFIX}_#{name}"
           full_plural_name = "#{RSS::DC_PREFIX}_#{plural_name}"
-          klass_name = Utils.to_class_name(name)
           plural_klass_name = "DublinCore#{Utils.to_class_name(plural_name)}"
-          full_plural_klass_name = "self.class::#{plural_klass_name}"
-          full_klass_name = "#{full_plural_klass_name}::#{klass_name}"
           klass.def_classed_elements(full_name, "value", plural_klass_name,
                                      full_plural_name, name)
           klass.module_eval(<<-EOC, __FILE__, __LINE__ + 1)

lib/rss/rss.rb

@@ -1093,9 +1093,8 @@ EOC
         tags = tags.sort_by {|x| element_names.index(x) || tags_size}
       end
 
-      _tags = tags.dup if tags
       models.each_with_index do |model, i|
-        name, model_uri, occurs, getter = model
+        name, _, occurs, = model
 
         if DEBUG
           p "before"

lib/shell/system-command.rb

@@ -84,7 +84,7 @@ class Shell
       notify "Job(%id) start imp-pipe.", @shell.debug?
       rs = @shell.record_separator unless rs
       _eop = true
-      th = Thread.start {
+      Thread.start {
 	begin
 	  while l = @pipe_in.gets
 	    @input_queue.push l
@@ -109,7 +109,7 @@ class Shell
     def start_export
       notify "job(%id) start exp-pipe.", @shell.debug?
       _eop = true
-      th = Thread.start{
+      Thread.start{
 	begin
 	  @input.each do |l|
 	    ProcessController::block_output_synchronize do

lib/sync.rb

@@ -128,9 +128,8 @@ module Sync_m
   def sync_try_lock(mode = EX)
     return unlock if mode == UN
     @sync_mutex.synchronize do
-      ret = sync_try_lock_sub(mode)
+      sync_try_lock_sub(mode)
     end
-    ret
   end
 
   def sync_lock(m = EX)

lib/webrick/cgi.rb

@@ -143,7 +143,7 @@ module WEBrick
           setup_header
           @header_part << CRLF
           @header_part.rewind
-        rescue Exception => ex
+        rescue Exception
           raise CGIError, "invalid CGI environment"
         end
       end

lib/webrick/httpresponse.rb

@@ -280,7 +280,7 @@ module WEBrick
       if @request_method == "HEAD"
         # do nothing
       elsif chunked?
-        remain = body ? @body.bytesize : 0
+        body ? @body.bytesize : 0
         while buf = @body[@sent_size, @buffer_size]
           break if buf.empty?
           data = ""

lib/webrick/httpservlet/cgi_runner.rb

@@ -20,7 +20,6 @@ end
 
 STDIN.binmode
 
-buf = ""
 len = sysread(STDIN, 8).to_i
 out = sysread(STDIN, len)
 STDOUT.reopen(open(out, "w"))
@@ -38,7 +37,7 @@ hash.each{|k, v| ENV[k] = v if v }
 dir = File::dirname(ENV["SCRIPT_FILENAME"])
 Dir::chdir dir
 
-if interpreter = ARGV[0]
+if ARGV[0]
   argv = ARGV.dup
   argv << ENV["SCRIPT_FILENAME"]
   exec(*argv)

lib/webrick/httpservlet/erbhandler.rb

@@ -44,8 +44,8 @@ module WEBrick
       private
       def evaluate(erb, servlet_request, servlet_response)
         Module.new.module_eval{
-          meta_vars = servlet_request.meta_vars
+          servlet_request.meta_vars
-          query = servlet_request.query
+          servlet_request.query
           erb.result(binding)
         }
       end

lib/webrick/log.rb

@@ -60,7 +60,7 @@ module WEBrick
     private
 
     def format(arg)
-      str = if arg.is_a?(Exception)
+      if arg.is_a?(Exception)
         "#{arg.class}: #{arg.message}\n\t" <<
         arg.backtrace.join("\n\t") << "\n"
       elsif arg.respond_to?(:to_str)

lib/xmlrpc/httpserver.rb

@@ -170,7 +170,7 @@ private
     io << http_resp(response.status, response.status_message,
                     response.header, response.body)
 
-  rescue Exception => e
+  rescue Exception
     io << http_resp(500, "Internal Server Error")
   end
 

lib/xmlrpc/parser.rb

@@ -714,7 +714,7 @@ module XMLRPC
         end
 
         def parse(str)
-          parser = REXML::Document.parse_stream(str, self)
+          REXML::Document.parse_stream(str, self)
         end
       end