From: Ihor Radchenko <yantar92@gmail.com>
Date: Thu, 24 Jun 2021 14:33:08 +0000 (+0800)
Subject: Doc fix for concat
X-Git-Tag: emacs-28.0.90~191
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=817c929edaf77dbdcd2ce7b9e6bbd3a5c57604f1;p=emacs.git

Doc fix for concat

* src/fns.c (Fconcat): Note that composition values may not remain eq
in return value of concat.  (Bug#48740)
---

diff --git a/src/fns.c b/src/fns.c
index a72e41aee5b..6f358dd1ba4 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -672,6 +672,9 @@ DEFUN ("concat", Fconcat, Sconcat, 0, MANY, 0,
        doc: /* Concatenate all the arguments and make the result a string.
 The result is a string whose elements are the elements of all the arguments.
 Each argument may be a string or a list or vector of characters (integers).
+
+Values of the `composition' property of the result are not guaranteed
+to be `eq'.
 usage: (concat &rest SEQUENCES)  */)
   (ptrdiff_t nargs, Lisp_Object *args)
 {