* Fixed the inheritance bug in the pull parser that James Britt found.

* Indentation changes, and changed some exceptions to runtime
  exceptions.
* Backed out the patch that changed the versions
* Wasn't including Text class.
* Fixes issue:25 (Trac)
* Fixes ticket:3 (Issue38 in Roundup.)
* Numerous fixes in the XPath interpreter correcting, among other
  things, ordering bugs and some incorrect behavior.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/functions.rb

@@ -339,6 +339,8 @@ module REXML
     end
 
     def Functions::sum( nodes )
+      nodes = [nodes] unless nodes.kind_of? Array
+      nodes.inject(0) { |r,n| r += number(string(n)) }
     end
     
     def Functions::floor( number )