Difference between revisions of "Keyboard macros"

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m (Protected "Keyboard macros": too many vandalism on keyboard macros. ([Edit=Allow only autoconfirmed users] (expires 09:46, 3 April 2015 (UTC)) [Move=Allow only autoconfirmed users] (expires 09:46, 3 April 2015 (UTC))))
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Men det legges ikke skjul pÃ¥ at det blir mye slakt nÃ¥r  louis vuitton skjerf s merker skal til pers. »Men tross slike «forsvarstaler» for det tilfeldige klarer jeg ikke Ã¥ svelge alt av det Drangsholt serverer. Vi har ogsÃ¥ hørt om «beleilige» branner av bygninger som ansees som kulturminner.
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
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Han var ein av dei mest markante finske arki  tektane i si tid og den som er lagd mest merke til internasjonalt. Dette til tross for at filmen ikke har hatt ordinær kinopremiere. Likevel er det ikke til Ã¥ stikke under stol at det er en seismisk populærkulturell happening nÃ¥r sagaen om Harry Potter bringes til sin filmatiske finale, fire Ã¥r etter at bøkene kunne fortelle en ung, avventende  mulberry veske  hvordan det gikk til sist.
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Denne brutale orkanen er et kraftig varsku fra et klima i ubalanse. - Nye vurderinger kan gjøre seg gjeldende- Graden av overføringsverdi vil bero pÃ¥ graden av likhet i informasjonssvikt som er vektlagt i Røeggen-saken, sier Giertsen til E24, og legger til:- Det er interessant at det ble hel  tilsidesettelse av avtalen. - Det er uansett ikke noe jeg kan gjøre med det, sier han.
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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I kjelleren fortalte PricewaterhouseCoopers tallknusere i mellomtiden at et stort flertall av lederne tror pÃ¥ økonomisk vekst i løpet av de nærmeste tre Ã¥r.  For samtidig som de alltid har hatt et realistisk syn pÃ¥ min situasjon, har de vært veldig flinke Ã¥ se de marc jacobs vesker  som faktisk fantes.  En tÃ¥pelig film fra Sverige er pÃ¥ vei til norske kinoer.
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City må klare seg uten Toure-brødrene og Mario Balotelli, mens Ferguson i dag bekreftet at stopperne Chris Smalling og Jonny Evans heller ikke blir klare til kampen. Det gjør det mindre attraktivt å komme på kamp, sier Rushfeldt til Dagbladet. Den renner fra Tibet, gjennom India og ender i Bangladesh.
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==Basic Use==
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; {{Keys|F3}}, or {{Keys|C-x (}}
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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]].
 +
 
 +
 
 +
[[Category:Intermediate]]
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[[Category:Editing]]

Revision as of 09:46, 3 October 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.

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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