This method, when bound to C-x C-c, allows you to close an emacs frame the
same way, whether it's the sole window you have open, or whether it's
a "child" frame of a "parent" frame. If you're like me, and use emacs in
a windowing environment, you probably have lots of frames open at any given
time. Well, it's a pain to remember to do Ctrl-x 5 0 to dispose of a child
frame, and to remember to do C-x C-x to close the main frame (and if you're
not careful, doing so will take all the child frames away with it). This
is my solution to that: an intelligent close-frame operation that works in
all cases (even in an emacs -nw session).
(defun intelligent-close ()
"quit a frame the same way no matter what kind of frame you are on"
(if (eq (car (visible-frame-list)) (selected-frame))
;;for parent/master frame...
(if (> (length (visible-frame-list)) 1)
;;close a parent with children present
;;close a parent with no children present
;;close a child frame