[wp-trac] [WordPress Trac] #9840: buttons on 4th line don't get added if 3rd line is empty

[WordPress Trac]

#9840: buttons on 4th line don't get added if 3rd line is empty
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 Reporter:  Denis-de-Bernardy  |       Owner:  azaozz
     Type:  defect (bug)       |      Status:  new   
 Priority:  normal             |   Milestone:  2.8   
Component:  TinyMCE            |     Version:  2.8   
 Severity:  normal             |    Keywords:        
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 I'm not entirely sure this is due to WP or TinyMCE, but:

 {{{
 add_filter('mce_buttons_3', 'my_editor_button'); // adds the button

 add_filter('mce_buttons_4', 'my_editor_button'); // ignores the button
 }}}

 I'm pretty sure we can work around this if it is TinyMCE-related -- patch
 I've in mind coming up in a bit if it works.

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Ticket URL: <http://core.trac.wordpress.org/ticket/9840>
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