iTerm supports using just one option key as meta. But in general I prefer using a build of emacs with Cocoa support enabled (you can get them at http://emacsfo

iTerm supports using just one option key as meta. But in general I prefer using a build of emacs with Cocoa support enabled (you can get them at http://emacsformacosx.com/ http://emacsformacosx.com/) That lets you set up things like you want with M-x customize-group ns I'm using CMD as meta there and CTRL as control, option stays option.