From ac43ac1af9dac42d30fbee044defee6e2641ebfc Mon Sep 17 00:00:00 2001
From: Colin Woodbury <colin@fosskers.ca>
Date: Thu, 18 Aug 2022 15:06:56 +0200
Subject: [PATCH] cl-reduce doc string improvement
* lisp/emacs-lisp/cl-seq.el (cl-reduce): Explain what happens when
using :from-end (bug#57273).
---
lisp/emacs-lisp/cl-seq.el | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lisp/emacs-lisp/cl-seq.el b/lisp/emacs-lisp/cl-seq.el
index 64ae05bf2a0..60e204eaf51 100644
--- a/lisp/emacs-lisp/cl-seq.el
+++ b/lisp/emacs-lisp/cl-seq.el
@@ -139,6 +139,10 @@ only case where FUNCTION is called with fewer than two arguments.
If SEQ contains exactly one element and no :INITIAL-VALUE is
specified, then return that element and FUNCTION is not called.
+If :FROM-END is non-nil, the reduction occurs from the back of
+the SEQ moving forward, and the order of arguments to the
+FUNCTION is also reversed.
+
\n(fn FUNCTION SEQ [KEYWORD VALUE]...)"
(cl--parsing-keywords (:from-end (:start 0) :end :initial-value :key) ()
(or (listp cl-seq) (setq cl-seq (append cl-seq nil)))
--
2.39.5