From 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Thu, 14 Aug 2025 22:58:58 -0500 Subject: removing all downloaded devdocs files --- devdocs/elisp/variables-with-restricted-values.html | 15 --------------- 1 file changed, 15 deletions(-) delete mode 100644 devdocs/elisp/variables-with-restricted-values.html (limited to 'devdocs/elisp/variables-with-restricted-values.html') diff --git a/devdocs/elisp/variables-with-restricted-values.html b/devdocs/elisp/variables-with-restricted-values.html deleted file mode 100644 index a8743b03..00000000 --- a/devdocs/elisp/variables-with-restricted-values.html +++ /dev/null @@ -1,15 +0,0 @@ -

Variables with Restricted Values

Ordinary Lisp variables can be assigned any value that is a valid Lisp object. However, certain Lisp variables are not defined in Lisp, but in C. Most of these variables are defined in the C code using DEFVAR_LISP. Like variables defined in Lisp, these can take on any value. However, some variables are defined using DEFVAR_INT or DEFVAR_BOOL. See Writing Emacs Primitives, in particular the description of functions of the type syms_of_filename, for a brief discussion of the C implementation.

Variables of type DEFVAR_BOOL can only take on the values nil or t. Attempting to assign them any other value will set them to t: 

(let ((display-hourglass 5))
-  display-hourglass)
-     ⇒ t
-
-
Variable: byte-boolean-vars -

This variable holds a list of all variables of type DEFVAR_BOOL.

-

Variables of type DEFVAR_INT can take on only integer values. Attempting to assign them any other value will result in an error: 

(setq undo-limit 1000.0)
-error→ Wrong type argument: integerp, 1000.0
-
-
-

- Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc.
Licensed under the GNU GPL license.
- https://www.gnu.org/software/emacs/manual/html_node/elisp/Variables-with-Restricted-Values.html -

-
-- cgit v1.2.3