Merge from origin/emacs-28

817c929eda Doc fix for concat
3eca2ad2a1 * lisp/image-dired.el (image-dired-external-viewer): Suppo...

1 files changed, 3 insertions, 0 deletions

diff --git a/src/fns.c b/src/fns.c
index 61182852ba7..76c76c92ba9 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)
 {