uri_hacks.rb in rdf-n3-0.2.2

- old
+ new

@@ -13,7 +13,17 @@
 #        result.path += '/' unless result.path.match(/[\#\/]$/) || uri.to_s[0..0] == "#"
         result = result.join(uri)
       end
       self.class.new(result)
     end
+    
+    # From http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/#section-Graph-URIref
+    #
+    # A URI Reference within an RDF graph is a Unicode string that:
+    # * does not contain any control characters ( #x00 - #x1F, #x7F-#x9F)
+    # * and would produce a valid URI character sequence (per RFC2396 [URI], sections 2.1) representing an absolute URI with optional fragment identifier when subjected to the encoding described below.
+    #
+    # The encoding consists of:
+    # 1. encoding the Unicode string as UTF-8 [RFC-2279], giving a sequence of octet values.
+    # 2. %-escaping octets that do not correspond to permitted US-ASCII characters.
   end
 end
\ No newline at end of file