Difference between revisions of "Key Bindings"

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| Super
 
| Super
 
| s
 
| s
| Often not mapped to any key by default, or to <tt>Window</tt> or <tt>Menu</tt> if present
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| On OS X this is the Command ⌘ key.
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On other systems often not mapped to any key by default, or to <tt>Window</tt> or <tt>Menu</tt> if present
 
| s-x
 
| s-x
 
| Type "x" while holding down super
 
| Type "x" while holding down super
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== Change key bindings ==
 
== Change key bindings ==
You can add, remove and change key bindings for any command.  
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You can add, remove and change key bindings for any command by using the Emacs Lisp function <code>global-set-key</code> or <code>local-set-key</code>.
  
 
; {{Command|global-set-key}} or {{Command|local-set-key}}
 
; {{Command|global-set-key}} or {{Command|local-set-key}}
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: Type the command to bind to that key sequence
 
: Type the command to bind to that key sequence
 
: Invoke {{Keys|C-x ESC ESC|repeat-complex-command}}. The output you see is the full lisp command which does the binding.  You can copy this to your {{EmacsConfigFile}}.
 
: Invoke {{Keys|C-x ESC ESC|repeat-complex-command}}. The output you see is the full lisp command which does the binding.  You can copy this to your {{EmacsConfigFile}}.
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'''Notes:'''
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* <code>global-set-key</code> bind keys globally (i.e. <code>global-mode-map</code>), which means other modes would override key bindings set by <code>global-set-key</code>.
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* <code>local-set-key</code> bind keys in the current buffer [[major mode]], which affects all buffers sharing the mode.
  
 
== External Links ==
 
== External Links ==

Latest revision as of 00:00, 11 May 2012

In Emacs, almost any keystroke, optionally combined with one or more modifier keys, or any sequence of such keystrokes, can be "bound" to any command.

Modifier keys naming convention[edit]

Modifier key Abbr. Remarks Example Action
Alt A Relatively seldom used in Emacs, because Meta is often "logically" mapped to the "physical" Alt key. A-x Type "x" while holding down the (non-Meta) Alt key
Control C C-x C-f While holding down Ctrl, type first "x" then "f". (This runs the command find-file).
Hyper h Often not mapped to any key (by default). h-x Type "x" while holding down hyper
Meta M Often mapped to Alt on your keyboard M-x find-file RET Either:
  • type "x" while holding down Meta, or
  • type "Esc" then "x"

(M-x activates the minibuffer)

Then type "find-file" in the minibuffer, then Return.

Shift S S-x Type "x" while holding down Shift
Super s On OS X this is the Command ⌘ key.

On other systems often not mapped to any key by default, or to Window or Menu if present

s-x Type "x" while holding down super

By convention, when multiple modifiers are specified, they go in alphabetical order: [C-M-x] not [M-C-x].

Printable cheat sheet for popular modes[edit]

Emacs ships with cheat sheets of common and useful key bindings. The pdf files are located in the refcards/ subdirectory of data-directory.

Change key bindings[edit]

You can add, remove and change key bindings for any command by using the Emacs Lisp function global-set-key or local-set-key.

M-x global-set-key or M-x local-set-key
Hit the key sequence you want to bind
Type the command to bind to that key sequence
Invoke [C-x ESC ESC]. The output you see is the full lisp command which does the binding. You can copy this to your Emacs configuration file.

Notes:

  • global-set-key bind keys globally (i.e. global-mode-map), which means other modes would override key bindings set by global-set-key.
  • local-set-key bind keys in the current buffer major mode, which affects all buffers sharing the mode.

External Links[edit]