OSX Emacs: unbind just the right alt?

Question

I\'m using emacsformacosx.com and would like to stop the Meta_R (right meta, or right option key) on my Apple keyboard from being an Emacs meta key.

The rea

Answer 1

To map the the left alt key with META and the right alt key with ALT, on the Mac OS X version of GNU Emacs, I use:

(setq mac-option-key-is-meta t)
(setq mac-right-option-modifier nil)

It should do the job for the behaviour you expect.