Difference between revisions of "Key Bindings"

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In Emacs, almost any keystroke, optionally combined with one or more [[#modifierKeys|modifier keys]], or any sequence of such keystrokes, can be "bound" to any [[command]].
 
In Emacs, almost any keystroke, optionally combined with one or more [[#modifierKeys|modifier keys]], or any sequence of such keystrokes, can be "bound" to any [[command]].
  
== Modifier keys naming convention ==
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== <span id="modifierKeys">Modifier keys naming convention</span> ==
  
 
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{| class="wikitable"
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| Either:
 
| Either:
 
* type "x" while holding down Meta, or
 
* type "x" while holding down Meta, or
* type "Esc" then "x",
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* type "Esc" then "x"
which activates the [[minibuffer]], then type "find-file" in the minibuffer, then Return.
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(M-x activates the [[minibuffer]])
 +
 
 +
Then type "find-file" in the minibuffer, then Return.
 
|-
 
|-
 
| Shift
 
| Shift
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|}
 
|}
  
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By convention, when multiple modifiers are specified, they go in alphabetical order: {{Keys|C-M-x}} not {{Keys|M-C-x}}.
  
 
== Printable cheat sheet for popular modes ==
 
== Printable cheat sheet for popular modes ==

Revision as of 16:35, 29 March 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

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 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

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

Editing key bindings

You can add, remove and change key bindings for any command. You can make your changes interactively (and only for the current session) using M-x global-set-key or M-x local-set-key. To make the change permanent, you can write some simple Emacs Lisp code that calls the same functions in your Emacs configuration file, which is loaded when Emacs first starts up.

External Links