Difference between revisions of "Keyboard macros"

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(Repeating a macro)
(Saving it permanently)
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To bind a keyboard macro to a key using <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.
 
To bind a keyboard macro to a key using <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.
  
===Saving it permanently===
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Hi, I just installed this pagkace into Umbraco v4.7. Once I insert the macro into my post I get this error message:                Server Error in  /' Application.A potentially dangerous Request.Path value was detected from the client (&).Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Web.HttpException: A potentially dangerous Request.Path value was detected from the client (&).Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.Stack Trace:                However if I go ahead and save/publish the document everything seems to be working just fine. Is there an issue with v4.7 or do I have bigger issues?
To save a keyboard macro for future Emacs sessions, go to your init file (or wherever you want to store it) and hit <code>M-x insert-kbd-macro</code>. Then enter the name of the macro you would like to save. This will insert Emacs Lisp code which defines the macro you chose, so you can use it in future sessions.
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Using the example in the beginning of this article, let's say you named that macro <code>remove-first-a</code>. If you use <code>insert-kbd-macro</code> to insert the Lisp for that macro, this is what would come up:
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<pre>
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(fset 'remove-first-a
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  (lambda (&optional arg) "Keyboard macro." (interactive "p") (kmacro-exec-ring-item (quote ([19 97 13 backspace 5 6] 0 "%d")) arg)))
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</pre>
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If you have bound the macro to a key as described in the previous section, you can generate the code for that as well by prefixing the insert-kbd-macro call with [[prefix argument|<code>C-u</code>]].
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[[Category:Intermediate]]
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[[Category:Editing]]
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Revision as of 08:49, 22 June 2012

Basic Keyboard Macro (`(info "(emacs) Basic Keyboard Macro")')

Keyboard macros can be used to automate or repeat tedious editing tasks in Emacs.

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.

I think the exposure looks relaly good with the flash! I am having the hardest time figuring out what is the "right" exposure using my speedlight also. I think this looks great and u got great catchlights, no pinlights. Very sweet post.  :)

Saving macros

Save Keyboard Macro (`(info "(emacs) Save Keyboard Macro")')

By name

To give a macro a name which you can later call using M-x, hit C-x C-k n. Try to avoid strange characters in the name. Once you've given it a name, you can execute it using M-x the-name-of-the-macro.

Binding to a key

To bind a keyboard macro to a key using 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.

Hi, I just installed this pagkace into Umbraco v4.7. Once I insert the macro into my post I get this error message: Server Error in /' Application.A potentially dangerous Request.Path value was detected from the client (&).Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Web.HttpException: A potentially dangerous Request.Path value was detected from the client (&).Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.Stack Trace: However if I go ahead and save/publish the document everything seems to be working just fine. Is there an issue with v4.7 or do I have bigger issues?