Difference between revisions of "Keyboard macros"

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En 2007, la cha d H lui demande de cr une collection de 45 pi L 2008 il est l du London College of Fashion pour une interview publique conduite par le journaliste historique Colin McDowell..  ÿþ<> talons. PARIS CatHotue franco sur demnâe aux marchands tmlement. 
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
  
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Trois garçons, une fille, l mal dégrossie d sans diplôme. Ne te décourage surtout pas, j'ai dû faire 11 ou 12 numéros de téléphone avant qu'on puisse me dire que j'aurai un rendezvous rapide (les psychiatres sont apparemment, en banlieue parisienne tout du moins, surbookés). ÿþ<> "Nous savions qu'il était malade.
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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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Il ne faut pas confondre CocaCola Entreprise (entreprise europ enne) et The CocaCola Company (entreprise am ricaine). la nuit tombante, elles ont croisé le chemin du monstre. Il est l'adresse parfaite pour tous les voyageurs, qu'ils soient en déplacement d'affaire ou d'agrément. Elle fait sa "bitch" en disant que la Star Ac est loin derrièreAndré: il lui a rappelé le bon temps des Enfants du rock.  ÿþ<> Une premi collection Eyewear est un m de qui c l de la maison. Aujourd'hui, nous avons donc décidé de lui laisser une nouvelle chance car son entourage a du préparer cette course depuis un bon moment.  
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==Basic Use==
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Dans le "village global", l'effet d'imitation bat son plein et des jeux vidéo circulant par exemple sur Internet contribuent à diffuser le "concept" (voici un lien à titre purement informatif et qui ne doit pas être compris comme une incitation à jouer à ce jeu stupide et moralement condamnable.) Avec ce deuxième triste épisode, le lancer de chaussures risque bel et bien de s'imposer comme le cauchemar des services de sécurité présidentiels du monde entier.. Il serait arrivé par l'Italie et aurait traversé la France pour débarquer, par hasard, àBrest.. ÿþ<> Et le mouvement s'accélère.
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ÿþh
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; {{Keys|F3}}, or {{Keys|C-x (}}
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Depuis, ses deux dernières sorties se sont soldées par autant de disqualifications. Notis Panagiotou l et se sp dans la confection artisanale de bijoux et la production de bijoux l Mokume d Il participe des et a re des prix pour avoir des objets et des bijoux en Hollande, Gr et Allemagne. Ce collège, vous l'avez reconstruit, contre vents et marées, en dépit des réticences de l'évêché de Beauvais et grâce aussi à de très solides appuis politiques.  ÿþ<> J'avais réalisé des chopines aux plateaux démesurés, qui s'étaient très bien vendues. Aucune plainte n'a été déposée pour l'instant selon la gendarmerie de L'Aigle. Il est en quelque sorte à Connor ce que Monteriggioni était à Ezio, seulement, à une échelle légèrement différente.
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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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==Saving macros==
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{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
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===Binding to a key===
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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

Revision as of 22:13, 23 March 2014

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.

Saving macros

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

Binding to a key

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

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