joomla/joomla-cms — pull request #1113 by s2software (2013-05-07 10:32:57+00:00)
Title: Let users define TinyMCE valid elements (insted of extended valid elements that has no effect).

For exemple, if I need to prevent empty tag strip, have to define *[*] in TinyMCE valid_elements option. If I define *[*] in extended_valid_elements (like Joomla current code), it doesn't work.