Rebinding Function Keys
Key sequences can contain function keys as well as ordinary
characters. Just as Lisp characters (actually integers) represent
keyboard characters, Lisp symbols represent function keys. If the
function key has a word as its label, then that word is also the name of
the corresponding Lisp symbol. Here are the conventional Lisp names for
common function keys:
left, up, right, down
- Cursor arrow keys.
begin, end, home, next, prior
- Other cursor repositioning keys.
select, print, execute, backtab
insert, undo, redo, clearline
insertline, deleteline, insertchar, deletechar
- Miscellaneous function keys.
f1, f2, ... f35
- Numbered function keys (across the top of the keyboard).
kp-add, kp-subtract, kp-multiply, kp-divide
kp-backtab, kp-space, kp-tab, kp-enter
kp-separator, kp-decimal, kp-equal
- Keypad keys (to the right of the regular keyboard), with names or punctuation.
kp-0, kp-1, ... kp-9
- Keypad keys with digits.
kp-f1, kp-f2, kp-f3, kp-f4
- Keypad PF keys.
These names are conventional, but some systems (especially when using
X) may use different names. To make certain what symbol is used for a
given function key on your terminal, type C-h c followed by that
key.
A key sequence which contains function key symbols (or anything but
ASCII characters) must be a vector rather than a string. The vector
syntax uses spaces between the elements, and square brackets around the
whole vector. Thus, to bind function key f1 to the command
rmail, write the following:
(global-set-key [f1] 'rmail)
To bind the right-arrow key to the command forward-char, you can
use this expression:
(global-set-key [right] 'forward-char)
This uses the Lisp syntax for a vector containing the symbol
right. (This binding is present in Emacs by default.)
See Init Rebinding, for more information about using vectors for
rebinding.
You can mix function keys and characters in a key sequence. This
example binds C-x <NEXT> to the command forward-page.
(global-set-key [?\C-x next] 'forward-page)
where ?\C-x is the Lisp character constant for the character
C-x. The vector element next is a symbol and therefore
does not take a question mark.
You can use the modifier keys <CTRL>, <META>, <HYPER>,
<SUPER>, <ALT> and <SHIFT> with function keys. To represent
these modifiers, add the strings C-, M-, H-,
s-, A- and S- at the front of the symbol name.
Thus, here is how to make Hyper-Meta-<RIGHT> move forward a
word:
(global-set-key [H-M-right] 'forward-word)
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