* Changes in Specialized Modes and Packages in Emacs 29.1
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-** 'savehist-additional-variables' can now specify variable lengths.
-Lists that are longer than the specified length will be truncated
-before saving.
+** 'savehist.el' can now truncate variables that are too long.
+An element of 'savehist-additional-variables' can now be of the form
+(VARIABLE . MAX-ELTS), which means to truncate the VARIABLE's value to
+at most MAX-ELTS elements (if the value is a list) before saving the
+value.
** Minibuffer and Completions