Difference between revisions of "Keyboard macros"

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La grande classique, ce qui devait arriver arriva, comme des benets en pleine nuit devant la barrière empechant de rejoindre Bious Artigues.  ÿþ<> Il faut changer sa technique et vous pouvez le faire en portant n'importe quel type de chaussures. Pour les fringales, barres vitamin chocolat, fruits secs ou s lait concentr Les produits haute teneur calorique sont g tr chers pour un apport pas toujours convainquant(3).. 
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
  
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They're extremely supportive yet flexible all at the same time. <>] La bonne idée.  ÿþ<> Il sera l'écoulement d'air de guidage de façon à obtenir le fait que les formateurs de travail incroyablement Faire est idéal pour vous tout simplement pas.
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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L'important, c'est qu'elle soit dotée de pouvoirs magiques, antioxydants and Co. En 6h25'49'', Benoit Peyvel (licencié en individuel au CO Tours Sud, déjà vainqueur l'an dernier avec Hervé Simon) et Sylvain Montagny ont remporté le circuit A, (ultra  50km  1200m Dénivelé +), réservé aux coureurs Elite. La truite est joueuse mais petite. Pour preuve ? Aux côtés de deux laboratoires de recherche et de cinq agences spatiales, le projet de Michel Fournier a fédéré 45 sociétés, allant du bâtiment aux télécoms ou au textile.  ÿþ<> Machine Wash, Air Dry.. Originaire d'Amérique centrale, le quinoa renferme des protéines de très haute qualité comportant tous les acides aminés essentiels (ceux que l'organisme n'arrive pas à fabriquer tout seul).  
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==Basic Use==
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Et dire que ce bijou gisait dans le placard de l'entrée sous des tonnes de bottes. De l' photographie, nous pouvons voir le parfaite avenue de la mode mode et l'extérieur , comme , chandails tricotés, chemises et chaussures simple marchandises . ÿþ<> The style est certainement enfin la catégorie influence le mouvement.  
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ÿþh
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; {{Keys|F3}}, or {{Keys|C-x (}}
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So they will require a flexible product development platform that can manage design, CAD file sharing, calendar management, line planning, costing, and sourcing for multiple product categories.Hardlines growth is accelerating. les fleurs s'invitent dans nos soins capillaires  Cheveux. Deuxi ravitaillement : reste la derni grosse c surmonter.  ÿþ<> Le niveau de confort d?ajustement reste élevé et est renforcé par les matériaux de haute qualité tels le nubuck, le daim, la matière Soft Shell, la cale en EVA avec Mammut Rolling Concept intégré et les lacets parfaitement coulissants. Les chaussures de course Barefoot sont dotées d'une tige basse et sont ultra légère pour vous permettre d'être en contact direct avec le terrain. elles sont là, ces couleurs vives en énergie mais tamisées par le faible contraste d'une vallée NordSud qui prend son temps pour laisser passer Maitre Soleil.
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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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