(Setting Variables): add-to-list and add-to-ordered-list moved to List

Variables node.

diff --git a/lispref/variables.texi b/lispref/variables.texi
index 0106c8ec2c2bee98203ee776ac2e85f1399799c3..5c54701cdd459335332cfab9736bfc36ed62c3b9 100644 (file)
--- a/lispref/variables.texi
+++ b/lispref/variables.texi
@@ -858,105 +858,6 @@ always affects the most local existing binding.
 @end quotation
 @end defun
 
-  One other function for setting a variable is designed to add
-an element to a list if it is not already present in the list.
-
-@defun add-to-list symbol element &optional append
-This function sets the variable @var{symbol} by consing @var{element}
-onto the old value, if @var{element} is not already a member of that
-value.  It returns the resulting list, whether updated or not.  The
-value of @var{symbol} had better be a list already before the call.
-Membership is tested using @code{equal}.
-
-Normally, if @var{element} is added, it is added to the front of
-@var{symbol}, but if the optional argument @var{append} is
-non-@code{nil}, it is added at the end.
-
-The argument @var{symbol} is not implicitly quoted; @code{add-to-list}
-is an ordinary function, like @code{set} and unlike @code{setq}.  Quote
-the argument yourself if that is what you want.
-@end defun
-
-Here's a scenario showing how to use @code{add-to-list}:
-
-@example
-(setq foo '(a b))
-     @result{} (a b)
-
-(add-to-list 'foo 'c)     ;; @r{Add @code{c}.}
-     @result{} (c a b)
-
-(add-to-list 'foo 'b)     ;; @r{No effect.}
-     @result{} (c a b)
-
-foo                       ;; @r{@code{foo} was changed.}
-     @result{} (c a b)
-@end example
-
-  An equivalent expression for @code{(add-to-list '@var{var}
-@var{value})} is this:
-
-@example
-(or (member @var{value} @var{var})
-    (setq @var{var} (cons @var{value} @var{var})))
-@end example
-
-@defun add-to-ordered-list symbol element &optional order
-This function sets the variable @var{symbol} by inserting
-@var{element} into the old value, which must be a list, at the
-position specified by @var{order}.  If @var{element} is already a
-member of the list, its position in the list is adjusted according
-to @var{order}.  Membership is tested using @code{eq}.
-This function returns the resulting list, whether updated or not.
-
-The @var{order} is typically a number (integer or float), and the
-elements of the list are sorted in non-decreasing numerical order.
-
-@var{order} may also be omitted or @code{nil}.  Then the numeric order
-of @var{element} stays unchanged if it already has one; otherwise,
-@var{element} has no numeric order.  Elements without a numeric list
-order are placed at the end of the list, in no particular order.
-
-Any other value for @var{order} removes the numeric order of @var{element}
-if it already has one; otherwise, it is equivalent to @code{nil}.
-
-The argument @var{symbol} is not implicitly quoted;
-@code{add-to-ordered-list} is an ordinary function, like @code{set}
-and unlike @code{setq}.  Quote the argument yourself if that is what
-you want.
-
-The ordering information is stored in a hash table on @var{symbol}'s
-@code{list-order} property.
-@end defun
-
-Here's a scenario showing how to use @code{add-to-ordered-list}:
-
-@example
-(setq foo '())
-     @result{} nil
-
-(add-to-ordered-list 'foo 'a 1)     ;; @r{Add @code{a}.}
-     @result{} (a)
-
-(add-to-ordered-list 'foo 'c 3)     ;; @r{Add @code{c}.}
-     @result{} (a c)
-
-(add-to-ordered-list 'foo 'b 2)     ;; @r{Add @code{b}.}
-     @result{} (a b c)
-
-(add-to-ordered-list 'foo 'b 4)     ;; @r{Move @code{b}.}
-     @result{} (a c b)
-
-(add-to-ordered-list 'foo 'd)       ;; @r{Append @code{d}.}
-     @result{} (a c b d)
-
-(add-to-ordered-list 'foo 'e)       ;; @r{Add @code{e}}.
-     @result{} (a c b e d)
-
-foo                       ;; @r{@code{foo} was changed.}
-     @result{} (a c b e d)
-@end example
-
 @node Variable Scoping
 @section Scoping Rules for Variable Bindings