suppress warnings when running the '-w'

--HG--
extra : convert_revision : svn%3Aacbfec75-9323-0410-a652-858a13e371e0/trunk%40941

Author: ryanking

lib/html5/html5parser.rb

@@ -46,7 +46,8 @@ def initialize(options = {})
       @tree = TreeBuilders::REXML::TreeBuilder
 
       options.each {|name, value| instance_variable_set("@#{name}", value) }
-
+      @lowercase_attr_name    = nil unless instance_variable_defined?(:@lowercase_attr_name)
+      @lowercase_element_name = nil unless instance_variable_defined?(:@lowercase_element_name)
       @tree = @tree.new
 
       @phases = @@phases.inject({}) do |phases, phase_name|

lib/html5/html5parser/in_body_phase.rb

@@ -51,13 +51,25 @@ def initialize(parser, tree)
 
       # for special handling of whitespace in <pre>
       @processSpaceCharactersDropNewline = false
-      alias processSpaceCharactersNonPre processSpaceCharacters
+      if $-w
+        $-w = false
+        alias processSpaceCharactersNonPre processSpaceCharacters
+        $-w = true
+      else
+        alias processSpaceCharactersNonPre processSpaceCharacters
+      end
     end
 
     def processSpaceCharactersDropNewline(data)
       # #Sometimes (start of <pre> blocks) we want to drop leading newlines
 
-      alias processSpaceCharacters processSpaceCharactersNonPre
+      if $-w
+        $-w = false
+        alias processSpaceCharacters processSpaceCharactersNonPre
+        $-w = true
+      else
+        alias processSpaceCharacters processSpaceCharactersNonPre
+      end
 
       if (data.length > 0 and data[0] == ?\n && 
         %w[pre textarea].include?(@tree.openElements.last.name) && !@tree.openElements.last.hasContent)

lib/html5/inputstream.rb

@@ -297,7 +297,7 @@ def char
           end
 
         when 0xC0 .. 0xFF
-          if @win1252
+          if instance_variable_defined?(:@win1252) && @win1252
             "\xC3" + (c-64).chr # convert to utf-8
           elsif @buffer[@tell-1 .. @tell+3] =~ /^
                 ( [\xC2-\xDF][\x80-\xBF]             # non-overlong 2-byte