EDIT: I understand there is keyboard-quit (which is normally bound to C-g); but I'm more interested to know about how one deals with editing functions that come with Emacs (like in this case). I run into this kind of situations from time to time when I want to change just a little bit of some build-in functions.
In emacs, when you hit M-ESC ESC (or ESC three times), you can get out of a lots of situations like transient-mark, etc. But I habitually hit the escape key (I actually remap this to a single hit of the escape key) more than I intended, and that ends up killing my windows configuration, which is quite annoying. The function keyboard-escape-quit is defined in simple.el:
(defun keyboard-escape-quit ()
"Exit the current \"mode\" (in a generalized sense of the word).
This command can exit an interactive command such as `query-replace',
can clear out a prefix argument or a region,
can get out of the minibuffer or other recursive edit,
cancel the use of the current buffer (for special-purpose buffers),
or go back to just one window (by deleting all but the selected window)."
(interactive)
(cond ((eq last-command 'mode-exited) nil)
((> (minibuffer-depth) 0)
(abort-recursive-edit))
(current-prefix-arg
nil)
((and transient-mark-mode mark-active)
(deactivate-mark))
((> (recursion-depth) 0)
(exit-recursive-edit))
(buffer-quit-function
(funcall buffer-quit-function))
((not (one-window-p t))
(delete-other-windows))
((string-match "^ \\*" (buffer-name (current-buffer)))
(bury-buffer))))
And I can see that I don't want the lines:
((not (one-window-p t))
(delete-other-windows))
But what is the best way to modify this function? I can see only two ways: 1) modify simple.el 2) copy this function to my .emacs file and do the modifications there. Both ways are not really good; ideally I would