Category:Emacs Lisp: Difference between revisions

Execution method:	Compiled (bytecode)
See Also:	Emacs Lisp on the HOPL; ;

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Revision as of 19:31, 25 April 2022

Emacs Lisp (often abbreviated to elisp) is the Lisp implementation used by the Emacs text editor. It doesn't provide all features of Common Lisp (e.g. its optional arguments always default to nil), but it contains special types which are specific for the use in the editor, like buffers (which is where you actually edit the text), windows, events etc.

Lisp expressions can be executed directly from within Emacs editor buffers, or loaded from files which optionally can be compiled into bytecode.

Emacs configuration files actually are Emacs Lisp source files.

Emacs Lisp can be used as a general programming language with the emacs "-batch" or "--script" command line arguments. [1]

How to run Emacs Lisp code

A simple way to run Emacs code is to switch to the scratch buffer (Buffers -> *scratch*), type in or paste some Lisp code, and then move to the end of the Lisp expression and press Control-J to evaluate it.[2]

If the debugger window appears, it can be dismissed with File -> Close like any other buffer.

Lisp code can also be added to the user's ~/.emacs file, which is evaluated at startup.

External links

GNU Emacs homepage

Subcategories

This category has the following 3 subcategories, out of 3 total.

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Emacs Lisp examples needing attention‎ (empty)
Emacs Lisp Implementations‎ (empty)
Emacs Lisp User‎ (31 P)

Pages in category "Emacs Lisp"

The following 189 pages are in this category, out of 189 total.

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100 doors

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99 bottles of beer

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N-queens problem

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Unicode variable names

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Variadic function

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Zero to the zero power

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 Emacs Lisp can be used as a general programming language with the emacs "-batch" or "--script" command line arguments. [http://www.emacswiki.org/emacs/BatchMode]
+==How to run Emacs Lisp code==
+A simple way to run Emacs code is to switch to the scratch buffer (Buffers -> *scratch*), type in or paste some Lisp code, and then move to the end of the Lisp expression and press Control-J to evaluate it.[https://www.gnu.org/software/emacs/manual/html_node/efaq/Evaluating-Emacs-Lisp-code.html]
+If the debugger window appears, it can be dismissed with File -> Close like any other buffer.
+Lisp code can also be added to the user's ~/.emacs file, which is evaluated at startup.
+==External links==
+* [https://www.gnu.org/software/emacs/ GNU Emacs homepage]