intertwingly

Jacques Distler: In theory, the result of serializing a REXML tree is well-formed XML.

begin
  require 'rexml/document'
  foo = REXML::Document.new("<div>a&#x00;b</div>")
  bar = REXML::Formatters::Default.new
  out = String.new
  bar.write(foo, out)
  puts out
rescue REXML::ParseException => e
  puts e.continued_exception.message
end

It is quite possible to produce a DOM that can’t be serialized into well-formed XML, but I do agree that if one parses a document without error, one should be confident that the document produced by serializing that document is well-formed.

With this ticket fixed, the above code now produces:

Illegal character '�' in raw string "a�b"