Difference between revisions of "Keyboard macros"

From WikEmacs
Jump to navigation Jump to search
(beats by dre norge zvykzq)
m (Protected "Keyboard macros" ([Edit=Allow only autoconfirmed users] (indefinite) [Move=Allow only autoconfirmed users] (indefinite)))
 
(301 intermediate revisions by 66 users not shown)
Line 1: Line 1:
−
Rihanna selv har ikke  mulberry skjerf  hendelsen offentlig. Likevel argumenterer Kokkvold for at Forsvaret skal gÃ¥ offentlig ut med informasjon som vil kunne skade den norske stats sikkerhets converse sko  interesser, forhold til internasjonale militære samarbeidspartnere, kompromittering av taktiske og operasjonelle metoder, og mest alvorlig, informasjon som kan sette norske statsborgere, spesifikt norske soldater og deres pÃ¥rørende, i potensiell livsfare. Det pussige er at sÃ¥ mange aksepterer Larsens utgangspunkt.
+
{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
−
Uansett fÃ¥r du mye for  timberland sko . 2,4 literen framsto som en smule sedat, det kledde for sÃ¥ vidt bilens cruiser potensial, men det blir ikke noe Autobahn lokomotiv med denne motoriseringen. Og matchvinneren selv sier følgende om kritikken fra Rodgers i et intervju sendt pÃ¥ Canal 9 etter kampen:- Noen ganger mÃ¥ en  converse vintersko  gjøre det.
+
 
−
Det er en av grunnenetil at Premier League er elsket over hele marc by marc jacobs vesker , mens Serie A bare erelsket i Italia, sier Mourinho.  og det skrives for mye av det som faller innenfor. Byttet utNÃ¥r han tar imot gjestene sine, fÃ¥r Obama et førstehÃ¥ndsinntrykk av hva som skjer med ledere som fÃ¥r skylden for de  ralph lauren skjorte  problemene.
+
'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
−
Karamellblandingen ble lansert samtidig med at den originale Smørbukk ble relansert, og fornyingen førte til et løft for Smørbukk pÃ¥ 28 prosent.  For avtalen er bredere enn som s />Opera har tidligere inng en avtale med Nintendo, om bruke en spesiell nettleser p kommende  ecco sko norge r av den h spillkonsollen Nintendo DS.  mai og partene ble enige om Ã¥ innlede frivillig mekling 1.
+
 
−
Sammenlignet med andre steder i landet, vil Sima-Samnanger bli et lite synlig tiltak. Han er glad i bøker og viser en gryende interesse for tall og bokstaver. Carveth mener en bok om filosofien i Mad Men er interessant av to grunner.
+
 
 +
==Basic Use==
 +
 
 +
; {{Keys|F3}}, or {{Keys|C-x (}}
 +
: Start defining a macro.
 +
; {{Keys|F4}}, or {{Keys|C-x )}}
 +
: Stop defining a macro.
 +
; {{Keys|F4}}, or {{Keys|C-x e}}
 +
: Execute a macro
 +
; {{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.
 +
# 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.
 +
# 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">
 +
<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>
 +
<li>Continue hitting <code>e</code> to call it several times. Hit any other key to get out of the macro repetition.</li>
 +
</ol>
 +
 
 +
== Naming and saving macros ==
 +
 
 +
You can:
 +
* give a name to the most recently defined macro (<code>C-x C-k n</code>)
 +
* bind it to a key sequence (<code>C-x C-k b</code>)
 +
* insert it in the current buffer as lisp code (<code>M-x insert-kbd-macro</code>).
 +
 
 +
{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
 +
 
 +
 
 +
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.
 +
 
 +
==Variables==
 +
 
 +
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>
 +
</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
 +
 
 +
 
 +
= See also =
 +
 
 +
* [https://github.com/Silex/elmacro elmacro], to show keyboard macros as emacs-lisp
 +
* [https://github.com/abo-abo/centimacro centimacro] to (temporarily) bind any number of macros to any global shortcuts.
 +
* You can use keyboard macros à la vim in [[evil]].
 +
 
 +
 
 +
[[Category:Intermediate]]
 +
[[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.
Retrieved from "https://wikemacs.org/index.php?title=Keyboard_macros&oldid=47560"