!
! based on: http://www.emacswiki.org/emacs/SwapControlAltAndCapsLock#toc8
! also based on: http://askubuntu.com/questions/93624/how-do-i-swap-left-ctrl-with-left-alt-on-my-keyboard
!

! Swap Control and Alt keys, both sides:

! First clear all modifiers & control
clear control
clear mod1
clear mod4

! Swap Control_L and Alt_L
keycode  64 = Control_L
keycode  37 = Alt_L Meta_L

! Menu becomes Alt_R Meta_R (AltGr)
! keycode 135 = Alt_R Meta_R

! Define Control_R and Alt_R similar to Control_L and Alt_L
keycode 108 = Control_L
keycode 105 = Alt_L Meta_L

! We need to set keycodes first, as some programs (emacs!) read
! the key names and seem to ignore what's below.
add mod1    = Alt_L Alt_R Meta_L Meta_R
add mod4    = Super_L Super_R
add control = Control_L Control_R