Double the default value of kill-ring-max

* lisp/simple.el (kill-ring-max): Double the default to 120.
* lisp/menu-bar.el (yank-menu-length): Doc fix.
(yank-menu-max-items): New variable.
(menu-bar-update-yank-menu): Don't display more than
'yank-menu-max-items' in the yank menu.

* doc/emacs/custom.texi (Changing a Variable):
* doc/emacs/killing.texi (Kill Ring):
* doc/lispintro/emacs-lisp-intro.texi (kill-new function):
* doc/lispref/text.texi (Internals of Kill Ring): Doc fix to use
the new value.

doc/emacs/custom.texi

@@ -195,7 +195,7 @@ the customization buffer:
 
   The first line shows that the variable is named
 @code{kill-ring-max}, formatted as @samp{Kill Ring Max} for easier
-viewing.  Its value is @samp{60}.  The button labeled @samp{[Hide]},
+viewing.  Its value is @samp{120}.  The button labeled @samp{[Hide]},
 if activated, hides the variable's value and state; this is useful to
 avoid cluttering up the customization buffer with very long values
 (for this reason, variables that have very long values may start out

doc/emacs/killing.texi

@@ -353,7 +353,7 @@ other ways to move text around.)
 
 @vindex kill-ring-max
   The maximum number of entries in the kill ring is controlled by the
-variable @code{kill-ring-max}.  The default is 60.  If you make a new
+variable @code{kill-ring-max}.  The default is 120.  If you make a new
 kill when this limit has been reached, Emacs makes room by deleting
 the oldest entry in the kill ring.
 

doc/lispintro/emacs-lisp-intro.texi

@@ -8767,7 +8767,7 @@ keeps the kill ring from growing too long.  It looks like this:
 
 The code checks whether the length of the kill ring is greater than
 the maximum permitted length.  This is the value of
-@code{kill-ring-max} (which is 60, by default).  If the length of the
+@code{kill-ring-max} (which is 120, by default).  If the length of the
 kill ring is too long, then this code sets the last element of the
 kill ring to @code{nil}.  It does this by using two functions,
 @code{nthcdr} and @code{setcdr}.

doc/lispref/text.texi

@@ -1342,7 +1342,7 @@ that @kbd{C-y} should yank.
 @defopt kill-ring-max
 The value of this variable is the maximum length to which the kill
 ring can grow, before elements are thrown away at the end.  The default
-value for @code{kill-ring-max} is 60.
+value for @code{kill-ring-max} is 120.
 @end defopt
 
 @node Undo

etc/NEWS

@@ -78,6 +78,14 @@ the point is now moved only when releasing the mouse button.  This no
 longer results in a bogus selection, unless the mouse has been
 effectively dragged.
 
++++
+** 'kill-ring-max' now defaults to 120.
+
+---
+** New user option 'yank-menu-max-items'.
+Customize this option to limit the amount of entries in the menu
+"Edit->Paste from Kill Menu".  The default is 60.
+
 
 * Changes in Specialized Modes and Packages in Emacs 29.1
 

lisp/menu-bar.el

@@ -2169,10 +2169,16 @@ otherwise it could decide to silently do nothing."
     (> count 1)))
 
 (defcustom yank-menu-length 20
-  "Maximum length to display in the `yank-menu'."
+  "Items in `yank-menu' longer than this will be truncated."
   :type 'integer
   :group 'menu)
 
+(defcustom yank-menu-max-items 60
+  "Maximum number of entries to display in the `yank-menu'."
+  :type 'integer
+  :group 'menu
+  :version "29.1")
+
 (defun menu-bar-update-yank-menu (string old)
   (let ((front (car (cdr yank-menu)))
 	(menu-string (if (<= (length string) yank-menu-length)
@@ -2196,8 +2202,9 @@ otherwise it could decide to silently do nothing."
 	      (cons
 	       (cons string (cons menu-string 'menu-bar-select-yank))
 	       (cdr yank-menu)))))
-  (if (> (length (cdr yank-menu)) kill-ring-max)
-      (setcdr (nthcdr kill-ring-max yank-menu) nil)))
+  (let ((max-items (min yank-menu-max-items kill-ring-max)))
+    (if (> (length (cdr yank-menu)) max-items)
+        (setcdr (nthcdr max-items yank-menu) nil))))
 
 (put 'menu-bar-select-yank 'apropos-inhibit t)
 (defun menu-bar-select-yank ()

lisp/simple.el

@@ -5076,10 +5076,11 @@ interact nicely with `interprogram-cut-function' and
 interaction; you may want to use them instead of manipulating the kill
 ring directly.")
 
-(defcustom kill-ring-max 60
+(defcustom kill-ring-max 120
   "Maximum length of kill ring before oldest elements are thrown away."
   :type 'integer
-  :group 'killing)
+  :group 'killing
+  :version "29.1")
 
 (defvar kill-ring-yank-pointer nil
   "The tail of the kill ring whose car is the last thing yanked.")