Setting alt/option key to Meta in Emacs on OSX

Question

Yes, I've googled around and none of the answers provided seem to work. I recently got a new computer and moved my .emacs over and some things aren't working. Specifically the alt/option key is not detected as meta in emacs.

I'm on:

Darwin punk.local 15.6.0 Darwin Kernel Version 15.6.0: Mon Jan  9 23:07:29 PST 2017; root:xnu-3248.60.11.2.1~1/RELEASE_X86_64 x86_64

I have the following in my .emacs:

(if (system-is-mac)
  (setq ns-command-modifier 'meta))
(setq mac-option-modifier 'meta)

And I'm running iterm2 build 3.0.13.

Any help is greatly appreciated, thanks!

Answer 1

This can be fixed from iterm2. Thanks for lawlist for pointing me in the right direction.

Select Iterm2 -> Preferences -> Profiles Brings up the profiles view.

On that pane select Keys then Left option key acts as and select +Esc.