Difference between revisions of "Keyboard macros"

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Section 2 du parcours, la cote vers la Pierre perc fait apparaitre des petits groupes.  ÿþ<> Le leader mondial de la semelle technique peut se permettre ces fantaisies. Sur le thème :On cite, en permanence, l'Allemagne comme système économicosocial performant en Europe. 
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
  
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Et c?est je crois Constantin, empereur romain converti au christianisme, qui a choisi quels ?vangiles (=r?cits) devaient faire partie des fameux quatre? et il a choisi ceux de quatre hommes et ?cart? les autres, y compris ceux des femmes et ceux qui racontaient l?amour de JC pour MarieMadeleine. But on the opposite, many people don think so.. ÿþ<> En ce 14 f je pense ma "Valentine", au d aux chandelles que nous ne partageons pas ce soir, la t de merlu qu'on a partag samedi dernier San Seb, au Mont Urgull, aux tapas de la mort qu'on s'est envoy (surtout moi!), notre premier baiser, au 2 novembre 2005.
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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ÿþh
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J'étais un peu l'Oblomov de la chambrée, mais grimpeur d'assez bon niveau, disons 6Sup en libre à semelles Vibram. En bas, les cailloux sautent encore tout au long du pierrier. Son pistil contient de l'apigénine, un pigment jaune doré qui se fixe sur les écailles. Quand on voit ce qui se passe chez nous en Italie où des bottes et des chaussures avec 15 cm de talon et semelle compensée sont légions dans les rue.  ÿþ<> Facile sur la plage, plus dur au bois de Boulogne. Arriv au ravito 2, qui sera le terminus.  
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==Basic Use==
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Lauréate du prix MarcelDuchamp en 2007, elle est représentée à Paris par la Galerie Perrotin et à New York chez Gagosian. La première est le soulier de tennis Lacoste, fidèle réédition d'un modèle unique créé en 1963 par et pour René Lacoste. ÿþ<> This kind of improves the antithesis additionally to agility Vibram FiveFingers Sprint ..  
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ÿþh
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; {{Keys|F3}}, or {{Keys|C-x (}}
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D 2  always played with the index and so on, LH.. Le mode du jour sera pépouse avec la salade de riz maison de la tête au pieds. Ou plutôt, mes pieds affaissés et tuméfiés sont désormais trop grands. ÿþ<> Non seulement les 'sorci?res' n'?taient pas fid?les au p?nis de leur mari mais en plus, apr?s moult tortures et traitements divers et vari?s. Pour tous ces gens, c'est la récréation.. Au départ, nous voulions aller à Thorsmork, mais ça risque d'être compliqué en termes de timing (nous ne sommes pas de "gros" randonneurs, donc pas tentés par le trek entre Thorsmork et Landmannalaugar)..
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: Start defining a macro.
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; {{Keys|F4}}, or {{Keys|C-x )}}
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: Stop defining a macro.
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; {{Keys|F4}}, or {{Keys|C-x e}}
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: Execute a macro
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; {{Keys|C-u 37 C-x e}} or {{Keys|C-u 37 F4}}
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: Execute a macro multiple times, using [[prefix argument]]
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; {{Keys|C-u 0 C-x e}}
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: Execute a macro until the end of the buffer
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==Example usage==
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Consider the standard <code>*scratch*</code> buffer:
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<pre>
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;; This buffer is for notes you don't want to save, and for Lisp evaluation.
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;; If you want to create a file, visit that file with C-x C-f,
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;; then enter the text in that file's own buffer.
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</pre>
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Suppose you want to remove the first occurrence of the letter "a" on every row in that piece of text. You could write a [[regular expression]] to do the job, but let's assume you want to use a keyboard macro this time.
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# Make sure [[point]] is at the start of the buffer.
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# Hit <code>C-x (</code> to start recording your macro. '''Note:''' If you hit <code>C-g</code> or if an error occurs, your keyboard macro recording will stop.
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# Hit <code>C-s</code> followed by <code>a</code> to find the first "a". Now, point is right after the first "a" in the text.
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# Hit backspace to delete that "a".
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The first occurrence of "a" of the first line has been deleted. Let's move point to the beginning of the next line and then stop recording.
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<ol start="5">
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<li>Hit <code>C-e C-f</code> to move point to the beginning of the next line.</li>
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<li>Hit <code>C-x )</code> to finish the recording of our macro.</li>
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</ol>
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The macro you have just recorded performs the operation of removing the first occurrence of "a" it can find and then moving point to the next line.
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<ol start="7">
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<li>Hit <code>C-x e</code> once to call that macro.</li>
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<li>Continue hitting <code>e</code> to call it several times. Hit any other key to get out of the macro repetition.</li>
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</ol>
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== Naming and saving macros ==
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You can:
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* give a name to the most recently defined macro (<code>C-x C-k n</code>)
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* bind it to a key sequence (<code>C-x C-k b</code>)
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* insert it in the current buffer as lisp code (<code>M-x insert-kbd-macro</code>).
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{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
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To bind a keyboard macro to a key use <code>C-x C-k b</code>.  To avoid problems caused by overriding existing bindings, the key sequences <code>C-x C-k 0</code> through <code>C-x C-k 9</code> and <code>C-x C-k A</code> through <code>C-x C-k Z</code> are reserved for your own keyboard macro bindings. You can, however, bind a keyboard macro to whatever you like.
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==Variables==
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Variables can be stored in lisp or in [[registers]]. Here's an example using lisp:
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<pre>
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[M-: (setq x 1)]
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<F3>
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Line number [C-u M-: x]
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[M-: (setq x (+ x 1))]
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<F4>
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</pre>
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Now execute the macro four times with the command <code>C-x e e e e</code> and you get:
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line number 1<br />
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line number 2<br />
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line number 3<br />
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line number 4
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= See also =
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* [https://github.com/Silex/elmacro elmacro], to show keyboard macros as emacs-lisp
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* [https://github.com/abo-abo/centimacro centimacro] to (temporarily) bind any number of macros to any global shortcuts.
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* You can use keyboard macros à la vim in [[evil]].
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[[Category:Intermediate]]
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[[Category:Editing]]

Latest revision as of 15:27, 4 July 2016

Basic Keyboard Macro (`(info "(emacs) Basic Keyboard Macro")')

Keyboard macros can be used to automate or repeat tedious editing tasks in Emacs.


Basic Use

[F3], or [C-x (]
Start defining a macro.
[F4], or [C-x )]
Stop defining a macro.
[F4], or [C-x e]
Execute a macro
[C-u 37 C-x e] or [C-u 37 F4]
Execute a macro multiple times, using prefix argument
[C-u 0 C-x e]
Execute a macro until the end of the buffer

Example usage

Consider the standard *scratch* buffer: 

;; This buffer is for notes you don't want to save, and for Lisp evaluation.
;; If you want to create a file, visit that file with C-x C-f,
;; then enter the text in that file's own buffer.

Suppose you want to remove the first occurrence of the letter "a" on every row in that piece of text. You could write a regular expression to do the job, but let's assume you want to use a keyboard macro this time.

  1. Make sure point is at the start of the buffer.
  2. Hit C-x ( to start recording your macro. Note: If you hit C-g or if an error occurs, your keyboard macro recording will stop.
  3. Hit C-s followed by a to find the first "a". Now, point is right after the first "a" in the text.
  4. Hit backspace to delete that "a".

The first occurrence of "a" of the first line has been deleted. Let's move point to the beginning of the next line and then stop recording.

  1. Hit C-e C-f to move point to the beginning of the next line.
  2. Hit C-x ) to finish the recording of our macro.

The macro you have just recorded performs the operation of removing the first occurrence of "a" it can find and then moving point to the next line.

  1. Hit C-x e once to call that macro.
  2. Continue hitting e to call it several times. Hit any other key to get out of the macro repetition.

Naming and saving macros

You can:

  • give a name to the most recently defined macro (C-x C-k n)
  • bind it to a key sequence (C-x C-k b)
  • insert it in the current buffer as lisp code (M-x insert-kbd-macro).

Save Keyboard Macro (`(info "(emacs) Save Keyboard Macro")')


To bind a keyboard macro to a key use C-x C-k b. To avoid problems caused by overriding existing bindings, the key sequences C-x C-k 0 through C-x C-k 9 and C-x C-k A through C-x C-k Z are reserved for your own keyboard macro bindings. You can, however, bind a keyboard macro to whatever you like.

Variables

Variables can be stored in lisp or in registers. Here's an example using lisp: 

[M-: (setq x 1)]
<F3>
Line number [C-u M-: x]
[M-: (setq x (+ x 1))]
<F4>

Now execute the macro four times with the command C-x e e e e and you get:

line number 1
line number 2
line number 3
line number 4


See also

  • elmacro, to show keyboard macros as emacs-lisp
  • centimacro to (temporarily) bind any number of macros to any global shortcuts.
  • You can use keyboard macros à la vim in evil.
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