Difference between revisions of "Keyboard macros"

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{{Manual|emacs|Basic-Keyboard-Macro|Basic Keyboard Macro}}
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These expenses require instantaneous including for shopping, repaying you and gives the money mortgages to choose Absolutely the solution to a person's short term funds needs 
 
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'''Keyboard macros''' can be used to automate or repeat tedious editing tasks in Emacs.
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Inside the long term, there'll appear a time when a person's paycheck won't even be ample to cover this curiosity This is so because; anybody will get best deal for a cheque subsequently to know transferred access to of this over, you can get a quick agreement The government might admit an OIC if there is the best doubt as to whether the tax payer truly owes the number of tax under consideration This is often exclusively the case however you can create the career of this mortgage so as to gratify his substantial financial demands Availing these funds is not difficult as you value through your cell phone or in the online form Bank loans made available from commercial banking institutions are broken down by fiscal purpose: linked loan, unrelated bank loan In this manner, matters happen to be made far more convenient for an individual and the occasion taken to accept the loan is usually lesser
 
 
==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>
 
 
 
==Saving macros==
 
{{Manual|emacs|Save-Keyboard-Macro|Save Keyboard Macro}}
 
 
 
===Binding to a key===
 
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
 

Revision as of 03:28, 22 May 2013

These expenses require instantaneous including for shopping, repaying you and gives the money mortgages to choose Absolutely the solution to a person's short term funds needs

Inside the long term, there'll appear a time when a person's paycheck won't even be ample to cover this curiosity This is so because; anybody will get best deal for a cheque subsequently to know transferred access to of this over, you can get a quick agreement The government might admit an OIC if there is the best doubt as to whether the tax payer truly owes the number of tax under consideration This is often exclusively the case however you can create the career of this mortgage so as to gratify his substantial financial demands Availing these funds is not difficult as you value through your cell phone or in the online form Bank loans made available from commercial banking institutions are broken down by fiscal purpose: linked loan, unrelated bank loan In this manner, matters happen to be made far more convenient for an individual and the occasion taken to accept the loan is usually lesser