In the Aquamacs based on Emacs 22.1, \C-n is now bound to visual-line-down and \C-p is bound to visual-line-up. I refer you to https://groups.google.com/forum/?fromgroups=#!topic/comp.emacs/Q1SeBV1kkIs[1-25-false] for a discussion on why this isn't a good idea.
Now normally the emacs maintainers point out that you can always revert to previous behavior with a line or two in your .emacs file. True, but these lines have no effect:
(global-set-key "\C-n" 'next-line) (global-set-key "\C-p" 'previous-line)
Use case: I'm wading through output of makefiles with extremely long command-lines (and most of them are these days, right?). I want to press a single Ctrl-N to move to the next logical line. Now it's taking 16 of them.
And why is emacs ignoring my request to bind these two keys? I can bind other keys, but not these. Are they hardwired somewhere?
I already backed out a linux emacs install'n from 23.1 to 22. This is a surprising development on the 22 line. In both cases my attempts to change key bindings were ignored. Is there a new way to set keybindings?