* lisp/files.el: Comment.

1 files changed, 3 insertions, 0 deletions

diff --git a/lisp/files.el b/lisp/files.el
index bafae814756..add38df5c4f 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -5848,6 +5848,9 @@ normally equivalent short `-D' option is just passed on to
                                   (file-name-directory file)
                                 (file-name-directory (expand-file-name file))))
                             (pattern (file-name-nondirectory file)))
+                        ;; NB since switches is passed to the shell, be
+                        ;; careful of malicious values, eg "-l;reboot".
+                        ;; See eg dired-safe-switches-p.
                         (call-process
                          shell-file-name nil t nil
                          "-c"