require 'rexml/document' fails

[rebotfc@…]

In the course of trying to get soap4r to work I've hit this problem:

$ macirb

require 'rexml/document'

NameError: uninitialized constant REXML::Attribute::NAME_STR

from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/attribute.rb:18:in `<class:Attribute>' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/attribute.rb:9:in `<module:REXML>' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/attribute.rb:4:in `<top (required)>' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/element.rb:3:in `require' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/element.rb:3:in `<top (required)>' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/document.rb:1:in `require' from /Library/Frameworks/MacRuby.framework/Versions/0.3/usr/lib/ruby/1.9.0/rexml/document.rb:1:in `<top (required)>' from (irb):1:in `require' from (irb):1 from /usr/local/bin/macirb:12:in `<main>'

[masterkain@…]

Same on trunk

>> require 'rexml/document'
NameError: uninitialized constant REXML::Attribute::NAME_STR
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/attribute.rb:18:in `<class:Attribute>'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/attribute.rb:9:in `<module:REXML>'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/attribute.rb:4:in `<top (required)>'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/element.rb:3:in `require'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/element.rb:3:in `<top (required)>'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/document.rb:1:in `require'
	from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/rexml/document.rb:1:in `<top (required)>'
	from (irb):1:in `require'
	from (irb):1
	from /usr/local/bin/macirb:12:in `<main>'

[isc@…]

Here is a reduction of the bug causing the failure:

module A
	module B
		CONST1 = "cool"
	end
	module C
		include B
	end
	class D
		include C
		CONST2 = CONST1
	end
end

Hope it'll help.

[stephane@…]

Hi, I confirm this bug in the last stable 0.4,

Hope it'll help

[mattaimonetti@…]

As a work around, the following works:

module A
	module B
		CONST1 = "cool"
	end
	module C
		include B
	end
	class D
		include C
		CONST2 = A::B::CONST1
	end
end

[mattaimonetti@…]

Because the constants are not inherited properly, we need to reopen the Attribute class and include the module defining the constants we are after.

You can use the following hack to get rexml working until this problem gets resolved:

require 'rexml/xmltokens'
module REXML
  class Attribute
    include ::REXML::XMLTokens
  end
end

You can put the hotpatch in a ruby file and require it before loading rexml/client or rexml/document.

- Matt

[simonis.christophe@…]

Replying to stephane@…:

Hi, I confirm this bug in the last stable 0.4, Hope it'll help

But it's works with the last snapshot of the experimental branch.

[lsansonetti@…]

I confirm that it's working with trunk. Not sure if the rest of REXML is working though.