GNU Emacs on Mac OS X, by default, uses the control key as CTRL, and the command key as META. This drives me crazy, because my MacBook Pro contains only a single control key on the left, while I'm used to having a control key on both sides of the keyboard.
With my GNU Emacs installation, I was able to modify the variables mac-control-modifier, mac-command-modifier, and mac-option-modifier so that command acts as CTRL and option acts as META.
How can I accomplish the same thing in IntelliJ IDEA? It's easy to select "Emacs" as the keymap, but I don't see any way make a similar remapping of CTRL and META. I know I could remap these keys globally in the OS, but I don't want to do that. I also know I could go in to each and every action and individually modify them, but that seems like a poor solution.
It's may be not the easiest solution but you can open the resources.jar (/Applications/IntelliJIdea.app/lib/resources.jar on MacOS) file, locate the Keymap_Emacs.xml (in idea directory) copy and modify it.
And then you can create a new keymap in IntelliJ for updating it with the new content (~/Library/Preferences/IntelliJIdea90/keymaps on MacOS).
That way you can change all your keymap without changing each action individually.