Description:
------------
Named subpatterns are not working with the syntax ?<name> or ?'name', 
only working with ?P<name>

The newer syntax's work with version 5.2.9-2 (on windows) and 5.2.11 
(linux), but not version 5.2.12 (red hat)

Reproduce code:
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http://www.coolboxcreative.com/demo/php_bug/source.txt

Expected result:
----------------
id =
classes = test_class

id = div_two
classes = another_class


Actual result:
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nothing outputted


nb. in the application I am using this in I get the following error:

Compilation failed: unrecognized character after (?< at offset 7' in 
....