What's the status of Meta key support for the Emacs keymap

I'm using phpStorm 6.

When I go to Preferences > Keymap and set the Emacs keymap I see that Move Caret to Previous word should work with Option-B on MacOS.  (Attached screen clip.)  When I use Option-b I get "∫".  Option-f does work to move forward one word.  Option-w to save to kill ring doesn't work. 

I also tried to reassign the keys, but I can't figure out how to make Option or Command the first keystroke.

Is this a configuration issue on my part, or is this functionality not complete in phpStorm 6?

I found these:

http://youtrack.jetbrains.com/issue/IDEA-104295#tab=Comments

http://youtrack.jetbrains.com/issue/IDEA-91796