Fix warnings on ruby 1.9.3

Author: drbrain

lib/rdoc/class_module.rb

@@ -519,10 +519,6 @@ def remove_nodoc_children
   # Search record used by RDoc::Generator::JsonIndex
 
   def search_record
-    # TODO squashing the file list seems simplistic
-    files = @in_files.map { |file| file.absolute_name }
-    file = files.include?(@parent.full_name) ? files.first : @parent.full_name
-
     [
       name,
       full_name,

lib/rdoc/parser/ruby.rb

@@ -804,7 +804,6 @@ def parse_comment container, tk, comment
 
   def parse_comment_tomdoc container, tk, comment
     return unless signature = RDoc::TomDoc.signature(comment)
-    column  = tk.char_no
     offset  = tk.seek
     line_no = tk.line_no
 

lib/rdoc/ruby_lex.rb

@@ -109,6 +109,7 @@ def initialize(content, options)
 
     @prompt = nil
     @prev_seek = nil
+    @ltype = nil
   end
 
   def inspect # :nodoc:
@@ -1144,7 +1145,7 @@ def identify_number(op = "")
   end
 
   def identify_string(ltype, quoted = ltype)
-    close = PERCENT_PAREN.values.include?(@quoted)
+    close = PERCENT_PAREN.values.include?(quoted)
     @ltype = ltype
     @quoted = quoted
 

test/test_rdoc_generator_json_index.rb

@@ -138,7 +138,6 @@ def test_generate_utf_8
 
     json =~ /\Avar search_data = /
 
-    assignment = $&
     index = $'
 
     index = JSON.parse index

test/test_rdoc_markup_to_html_snippet.rb

@@ -259,14 +259,6 @@ def accept_paragraph_underscore
   end
 
   def accept_raw
-    raw = <<-RAW.rstrip
-<table>
-<tr><th>Name<th>Count
-<tr><td>a<td>1
-<tr><td>b<td>2
-</table>
-    RAW
-
     assert_equal '', @to.res.join
     assert_equal 0, @to.characters
   end