Thanks to Ionic on the #x2go IRC channel, I put the same thing in /etc/x2go/keystrokes.cfg, and now the fullscreen binding is disabled.

Curious  about why I had to change a server-side config to change this client-side behavior, but I'm happy now.

Thanks, Ionic!

Best,
Alex

On Tue, Feb 9, 2016 at 10:29 AM, Alex Coventry <alx@empirical.com> wrote:
In the OS X client, Control-Option-F toggles fullscreen.  I would like to pass the chord through to the server, because C-M-F in emacs is forward-sexp.  Is there an easy way to do that?

I've tried putting a file at ~/.x2go/config/keystrokes.cfg with the following contents: 

<!DOCTYPE NXKeystroke>
<keystrokes>
</keystrokes>

However, Control-Option-F still results in toggling fullscreen.


Best regards,
Alex