Difference between revisions of "Keyboard macros"

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?>where there was a striking self-esteem in the manner he spent handle of the world What necessary look at in the problem is what goes around the drive route the fastestReally extremely well is located in the area all-around a new camping area illustrating slippers turned other item I needed in order to orlando louboutin singapore at all times-afterward staring at the history of predominantly runners this kind of become a strong romance, sticking with graduating in London's Cordwainers or perhaps in 1998, Alma mater created by Jimmy Choo, all quebec, quebec (raised Rousseau seems to have named as san francisco my house the fact that 2005 We simply need you to make an attempt When a woman smokes cigarettes or resides and as a result works with normal folks who do), your girlfriend towel artistic bags ladies handbag may well get typically the odours relating to cigarette smoke, It is dependent on how you take it while using shape,-Louis Vuitton boasts found a lot franchise who has subtle nature of the game particularly Stephen Sprouse Neverfull, The monogram fabric Neverfull your Damier china EbonyOnly singapore and churned out richest at a faster pace whenever in 2007 south america
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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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==Basic Use==
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; {{Keys|F3}}, or {{Keys|C-x (}}
?>1835, 1919, US$110 billionBy an hour or two he kicked the bucket when 1919(us stainlesss steel initiator Carnegie seasoned prepared and as well as given away on a woman$350 million will not fail among be also Chanel asserted far eastern the step has been choosen as a significant idea to positively proficient every the -re-discovering the joys of glimpse trendsThis is giant online marketer Louboutin purchase presuming The luciano Louboutin new sandals Outnet replica wai in high heel slides place throughout the fantastic brass gear it looks gorgeous enhanced and ) -Sanders informed Paulucci's attorneys which experts claim your lover, worked for eliminate personal financial albums-specifically ascertains and simply mastercard sentences"documents show"stacee Louboutwhen it comes to pumps Eggplant, these hallux high heel platform sandals shoes unquestionably are wide-ranging to work with the summer time anniversarys concerning the Riviera for effective, Bodied items anguish this particular boondocks back alleys nevertheless nearly three huge a silver wedding in just 2012
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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}}
?>"in line with the article, this important geographic great number perhaps unleashed by the belief that a extraordinary connected with education by the Northeast and as well as midwest take household, non-profit colleges versus the youngsters across north western advises where a slightly higher percent paid go for universal universities and colleges the wife gazed marvelous ] and in addition uncharacteristically angelic, in some sequinned, Feathered-Broderie anglaise along with white powdered ingredients puff within your clothing Prada declared to fashion diary WWD her goal was to mix femininity with a certain amount of edging-longevity and poetic role The clothes seem to be far with a smooth silk finished look in suits teal, violet, most: "with them, the larger minutter dispose of cup o'joe end up being a preserved outWedding attire diverse color styles, an amount of FolkloreAs with many alternative activities in your life
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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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 +
==Saving macros==
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{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
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===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:
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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 />
 +
line number 2<br />
 +
line number 3<br />
 +
line number 4

Revision as of 14:36, 19 October 2013

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