From: "studnev (Aleksey Studnev)" <astudnev@...>
Date: 2012-04-17T06:39:14+09:00
Subject: [ruby-core:44397] [ruby-trunk - Bug #6307][Open] REXML parser does not parse valid XML (The 'xml' prefix must not be bound to any other namespace)


Issue #6307 has been reported by studnev (Aleksey Studnev).

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Bug #6307: REXML parser does not parse valid XML (The 'xml' prefix must not be bound to any other namespace)
https://bugs.ruby-lang.org/issues/6307

Author: studnev (Aleksey Studnev)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.2p290 (2011-07-09) [i386-mingw32]


Attached is an example file which is not parsed by REXML parser, generating an error:

The 'xml' prefix must not be bound to any other namespace (http://www.w3.org/TR/REC-xml-names/#ns-decl)

The problem is in these following lines: 


                attrs.each { |a,b,c,d,e| 
                  if b == "xmlns"
                    if c == "xml"
                      if d != "http://www.w3.org/XML/1998/namespace"
                        msg = "The 'xml' prefix must not be bound to any other namespace "+
                        "(http://www.w3.org/TR/REC-xml-names/#ns-decl)"
                        raise REXML::ParseException.new( msg, @source, self )


There is a description of this problem also in: https://rails.lighthouseapp.com/projects/8994/tickets/3701-bug-in-baseparserrb


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