that some switches are not supported by ls-lisp.el
+2001-11-20 Eli Zaretskii <eliz@is.elta.co.il>
+
+ * dired.el (dired-listing-switches): Mention in the doc string
+ that some switches are not supported by ls-lisp.el
+
2001-11-19 Stefan Monnier <monnier@cs.yale.edu>
* imenu.el (imenu--split-menu): Use dolist and copy-sequence.
"*Switches passed to `ls' for dired. MUST contain the `l' option.
May contain all other options that don't contradict `-l';
may contain even `F', `b', `i' and `s'. See also the variable
-`dired-ls-F-marks-symlinks' concerning the `F' switch."
+`dired-ls-F-marks-symlinks' concerning the `F' switch.
+On systems such as MS-DOS and MS-Windows, which use `ls' emulation in Lisp,
+some of the `ls' switches are not supported; see the doc string of
+`insert-directory' on ls-lisp.el for more details."
:type 'string
:group 'dired)