* src/eval.c (Fbind_symbol): New function.

[bpt/emacs.git] / lisp / custom.el

diff --git a/lisp/custom.el b/lisp/custom.el
index 09431c4..c30ad7c 100644 (file)
--- a/lisp/custom.el
+++ b/lisp/custom.el
@@ -232,9 +232,10 @@ The following keywords are meaningful:
        given in the `defcustom' call.  The default is
        `custom-initialize-reset'.
 :set   VALUE should be a function to set the value of the symbol
-        when using the Customize user interface.
-       It takes two arguments, the symbol to set and the value to
-       give it.  The default choice of function is `set-default'.
+       when using the Customize user interface.  It takes two arguments,
+       the symbol to set and the value to give it.  The function should
+       not modify its value argument destructively.  The default choice
+       of function is `set-default'.
 :get   VALUE should be a function to extract the value of symbol.
        The function takes one argument, a symbol, and should return
        the current value for that symbol.  The default choice of function