Difference between revisions of "Keyboard macros"

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However AW11, il est inutile hun nous dans notre strive ordinaire.  яю<> La chaussure Г©limine aussi les Г©lГ©vateurs de talon pour distribuer le poids corporel uniformГ©ment et ainsi aligner la colonne vertГ©brale et amГ©liorer la posture, ainsi que stimuler la fonction neurale importante pour l'Г©quilibre et l'agilitГ©. Pour ne rien oublier, dresser une liste en partant de la t et en descendant jusqu pieds. 
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
  
ca finit par scorer quand meme ! On retiendra une vallГ©e aГ©rГ©e, pas mal d'eau pas du tout machГ©e malgrГ© la pluie incessante. <>].  яю<> Una volta che si veterans administration fuori, il freddo vi porterГ  indietro. 
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
яюh
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==Basic Use==
"De contrainte, la marche est devenue loisir dans le milieu rural, observe Emile Orain, prГ©sident sortant du comitГ© Bretagne de la FFRP. VirГ©e en terre Luchonnaises. яю<> VГЄtements adhГ©rant Г  la "traditionnelle classique rГ©guliГЁre style", imprГ©gnГ© de l'idГ©e pensГ©e de Moncler Grenoble, trГЁs aujourd'hui .  
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яюh
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; {{Keys|F3}}, or {{Keys|C-x (}}
"De contrainte, la marche est devenue loisir dans le milieu rural, observe Emile Orain, prГ©sident sortant du comitГ© Bretagne de la FFRP. Nous ne sommes pas Г©quipГ©s en matГ©riel de randonnГ© et nous ne possГ©dons donc pas de chaussures adaptГ©es Г  ce type d'activitГ©. Pas grande difficultГ©, cadre sapineux et ombragГ© au poil. яю<> That's obvious just walking around the Outdoor Retailer show  creating the right high performing softlines, hardlines, and footwear product and delivering it to the customer when they want it, leads to brand loyalty. TГ©moins de cet engouement pour la marche, les fabricants de matГ©riel enregistrent des hausses spectaculaires de leurs ventes: 18% pour Lafuma, 17% pour Aigle, les deux leaders de l'Г©quipement de loisirs nature. Vous vous souvenez de lui ? Oui, bien s il est m prof de philo chez nous Bah, rajeunit pas, tout A vrai dire, ils s faire leur premier trail.
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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}}
 +
: Execute a macro multiple times, using [[prefix argument]]
 +
; {{Keys|C-u 0 C-x e}}
 +
: Execute a macro until the end of the buffer
 +
 
 +
==Example usage==
 +
Consider the standard <code>*scratch*</code> buffer:
 +
 
 +
<pre>
 +
;; 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.
 +
</pre>
 +
 
 +
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.
 +
 
 +
# 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.
 +
# 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".
 +
 
 +
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.
 +
 
 +
<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>
 +
<li>Hit <code>C-x )</code> to finish the recording of our macro.</li>
 +
</ol>
 +
 
 +
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.
 +
 
 +
<ol start="7">
 +
<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>
 +
</ol>
 +
 
 +
==Saving macros==
 +
{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
 +
 
 +
===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:
 +
 
 +
<pre>
 +
[M-: (setq x 1)]
 +
<F3>
 +
Line number [C-u M-: x]
 +
[M-: (setq x (+ x 1))]
 +
<F4>
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</pre>
 +
 
 +
Now execute the macro four times with the command <code>C-x e e e e</code> and you get:
 +
 
 +
line number 1<br />
 +
line number 2<br />
 +
line number 3<br />
 +
line number 4

Revision as of 06:55, 11 February 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