"Toggle Show Paren mode.
When Show Paren mode is enabled, any matching parenthesis is highlighted
after `show-paren-delay' seconds of Emacs idle time.
-This variable should be set only with \\[customize], which is equivalent
-to using the function `show-paren-mode'."
+Setting this variable directly does not take effect;
+use either \\[customize] or the function `show-paren-mode'."
:set (lambda (symbol value)
(show-paren-mode (or value 0)))
:initialize 'custom-initialize-default