Fixed parsing of escaped characters in strings

Author: drbrain

lib/rdoc/ruby_lex.rb

@@ -1188,6 +1188,8 @@ def identify_string(ltype, quoted = ltype, type = nil)
           if %w[' /].include? @ltype then
             case ch = getc
             when "\\", "\n", "'"
+            when @ltype
+              str << ch
             else
               ungetc
             end

test/test_rdoc_ruby_lex.rb

@@ -149,6 +149,17 @@ def test_class_tokenize_regexp_backref
     assert_equal expected, tokens
   end
 
+  def test_class_tokenize_regexp_escape
+    tokens = RDoc::RubyLex.tokenize "/\\//", nil
+
+    expected = [
+      @TK::TkREGEXP.new( 0, 1,  0, "/\\//"),
+      @TK::TkNL    .new( 4, 1,  4, "\n"),
+    ]
+
+    assert_equal expected, tokens
+  end
+
   def test_class_tokenize_string
     tokens = RDoc::RubyLex.tokenize "'hi'", nil