* Added the lower-case Shift-JIS files to the manifest. The upper-case ones

should be deprecated, but I need a Shift-JIS encoded XML file to test
  against, first.
* Added support for maintaining external entity occurances in DTDs
* Deprecated the use of Document::DECLARATION.  The new default declaration
  can be gotten with XMLDecl::default()
* Refactored the encoding support code.  It should be more robust now,
  and fixes a few bugs.
* The XPath string() function now deals with Element nodes properly.
* Serialization with Output objects now works as would be expected.
* Various code cleanups, some reducing the number of warnings that Ruby 1.8.x
  produces with REXML.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5144 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/encoding.rb

@@ -18,20 +18,26 @@ module REXML
 				if enc and enc != UTF_8
 					@encoding = enc.upcase
 					begin
-						load 'rexml/encodings/ICONV.rb'
+            load 'rexml/encodings/ICONV.rb'
+						instance_eval @@__REXML_encoding_methods
 						Iconv::iconv( UTF_8, @encoding, "" )
 					rescue LoadError, Exception => err
+						raise "Bad encoding name #@encoding" unless @encoding =~ /^[\w-]+$/
+						@encoding.untaint 
 						enc_file = File.join( "rexml", "encodings", "#@encoding.rb" )
 						begin
-							load enc_file
+              load enc_file
+							instance_eval @@__REXML_encoding_methods
 						rescue LoadError
+              puts $!.message
 							raise Exception.new( "No decoder found for encoding #@encoding.  Please install iconv." )
 						end
 					end
 				else
 					enc = UTF_8
 					@encoding = enc.upcase
-					load 'rexml/encodings/UTF-8.rb'
+          load 'rexml/encodings/UTF-8.rb' 
+					instance_eval @@__REXML_encoding_methods
 				end
 			ensure
 				$VERBOSE = old_verbosity