Difference between revisions of "Keyboard macros"

From WikEmacs
Jump to navigation Jump to search
(parajumpers norge raudzz)
m (Protected "Keyboard macros" ([Edit=Allow only autoconfirmed users] (indefinite) [Move=Allow only autoconfirmed users] (indefinite)))
 
(320 intermediate revisions by 66 users not shown)
Line 1: Line 1:
−
(SBU) Remittances to Eritrea are estimated at 11% of the GDP, among one of the highest in Africa. I juni 2002 kjøpte han skipsverftet Mjellem Karlsen sammen med Carl Fredrik Seim. Ingeniører og sivil timberland vintersko er er yrke  sgruppene som gÃ¥r igjen i slike oppslag.
+
{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
−
- Fornærmede har senere innrømmet at dette var feil, og at hun etter episoden i suite 2806 gikk videre til et rom i nærheten og vasket det, før hun igjen vendte tilbake til suite 2806. Det har bidratt til Ã¥ New York-børsen h  ar steget nesten kontinuerlig siden 2009 selv om økonomien har vært i krise. januar 1933, til utbruddet av den annen  parajumper skrig i 1939 - ja, like til Auschwitz.
+
 
−
Microsoft satser i NorgeStoltenberg mener nyheten om at Microsoft skal gjøre Norge til et tyngdepunkt for utvikling av søkerteknologi var verdt en kunngjøring fra Statsministerens kontor. Han legger ikke skjul p at landslaget er ute etter underholde og f mye oppmerksomhet. Det kan være at Norges Bank benytter rentemøtet til å annonsere tiltak for å redusere forskjellen mellom pengemarkedsrenten og styringsrenten, som er noe høyere enn Norges Bank liker.
+
'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
−
Og hvis noen skulle komme over musikk nike free run  til «You Are The One» (1988), sÃ¥ handler den om at Morten, Magne og Paul gÃ¥r rundt pÃ¥ New York i matrosdresser, hÃ¥nd i hÃ¥nd med en dame mellom seg. - Dette er nok min beste kveld i timberland sko .  Denne skikken ble begrunnet med at kvinner mÃ¥tte fÃ¥ barn pÃ¥ grunn av sin psykiske helse.
+
 
−
Og det gÃ¥r an Ã¥ prøve igjen senere. Det er helt vindstille og mørkt nÃ¥r fortelleren, kapteinen, oppdager at skipets kinin-behol  dning er borte. Det gjelder bÃ¥de egne produksjoner og kjøp fra eksterne  mulberry er.
+
 
 +
==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"