Additional information: This change allows applescripts like the following to work: tell application "Emacs" set the bounds of the first window to {100, 100, 500, 500} end tell Without the change, the following error message is issued: test.oas:23:89: execution error: Emacs got an error: Can’t set bounds of window 1 to {100, 100, 500, 500}. (-10006) -- Anders Lindgren