1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index dae028be7b0..1a1e0d8b70e 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -703,6 +703,11 @@ manual for more details.
 
 * Lisp Changes in Emacs 27.1
 
++++
+** New function 'proper-list-p'.
+Given a proper list as argument, this predicate returns its length;
+otherwise, it returns nil.
+
 ** define-minor-mode automatically documents the meaning of ARG
 
 +++