M-x package-install rbenv
M-x rbenv-use-global prepares the current Emacs session to use the global ruby configured with rbenv.
M-x rbenv-use allows you to switch the current session to the ruby implementation of your choice.
M-x rbenv-use-global prepares the current Emacs session to use the global ruby configured with rbenv.
M-x rbenv-use allows you to switch the current session to the ruby implementation of your choice.