* lib/cgi.rb (CGI::unescapeHTML): consider ISO-8859-1.

[ruby-dev:35936]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18802 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sun Aug 24 11:26:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* lib/cgi.rb (CGI::unescapeHTML): consider ISO-8859-1.
+	  [ruby-dev:35936]
+
 Sun Aug 24 10:55:00 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* enc/emacs_mule.c: support Emacs/Mule internal encoding.

lib/cgi.rb

@@ -396,18 +396,20 @@ class CGI
       when 'gt'                  then '>'
       when 'lt'                  then '<'
       when /\A#0*(\d+)\z/
-	if enc == Encoding::UTF_8
-	  $1.to_i.chr(enc)
-	elsif $1.to_i < 128 && asciicompat
-	  $1.to_i.chr
+        n = $1.to_i
+	if enc == Encoding::UTF_8 or
+          enc == Encoding::ISO_8859_1 && n < 256 or
+          asciicompat && n < 128
+	  n.chr(enc)
 	else
 	  "&##{$1};"
 	end
       when /\A#x([0-9a-f]+)\z/i
-	if enc == Encoding::UTF_8
-	  $1.hex.chr(enc)
-	elsif $1.hex < 128 && asciicompat
-	  $1.hex.chr
+        n = $1.hex
+	if enc == Encoding::UTF_8 or
+          enc == Encoding::ISO_8859_1 && n < 256 or
+          asciicompat && n < 128
+	  n.chr(enc)
 	else
 	  "&#x#{$1};"
 	end