Difference between revisions of "Keyboard macros"

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For easy cleaning, the coasters can be placed in the dishwasher.  ÿþ<> Brunei Darrusalam. Basically, if a clock edge were included, you could not have an else clause (because it is implicitly "do not change the output"), and any nonedge parts of the if condition would simply become the clock enable expression. 
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
  
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Apart from this, the sneakers also aid to decrease joint pressure, but at the same time, activate the muscle tissue in the leg for a extended period of time. Laughter.  ÿþ<> FAKE SOME POOLSIDE CHIC A new (fake) tan calls for a new bikini.
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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ÿþh
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Untangle your headphones, create a playlist at home, fill your water bottle all of these things add up and waste precious gym time, so make sure you ready to go as soon as you step onto the gym floor.. Actually, Dylan's taking care of both of them and doing a really good job, feeding Joseph his bottle and teaching Lily how to play guitar. I recently got my hands on apair of Fitflopsand haven been able to take them off since. Then (the) Canadian government sent a plane. ÿþ<> Her dreams of engineering a thirdpoll in national politics were postponed the day Mulayam confessed that he was simply thinking aloud while suggesting A P J Abdul Kalam for the presidency. Oglethorpe is their fat leader, and is orange colored.  
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==Basic Use==
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They are also not acceptable in colder weather. Typically you apply 15 minutes of . ÿþ<> This is not a winning strategy." She suggests "instead of making it all about you, prepare a few questions ahead of time and conduct miniinterviews with people you meet to find out what their needs are and whom they are connected to.  
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ÿþh
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; {{Keys|F3}}, or {{Keys|C-x (}}
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We are used to wearing our seat belts every day in our car. 45 69. The two cages that constitute the body of the 1010 Chrono Sport evoke the wheels and gear trains in the movement of a watch.  ÿþ<> There isn a certain type of shoe that you need to buy, but you can choose between black heels that have a chunkier heel, one that is pointier such as a stiletto style, or even something a bit strappier that can easily be dressed up or down. It is a great trainer for several indoor and outside sports activities. Whether you are going to an event or likely to office, you must have a chance to represent yourself in the footwear what suits completely.
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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]].
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[[Category:Intermediate]]
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[[Category:Editing]]

Revision as of 01:20, 25 January 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.
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