(File Names): Add a note about ~/ peculiarities on DOS/Windows.

diff --git a/man/files.texi b/man/files.texi
index 4fbf945c38bf1668429f91e39b32aabe1a42eb86..b028e4d20b6d1ac9a24a9b6dd29acda9d5d21c9b 100644 (file)
--- a/man/files.texi
+++ b/man/files.texi
@@ -112,7 +112,10 @@ done before Emacs is started.
 @cindex home directory shorthand
   You can use the @file{~/} in a file name to mean your home directory,
 or @file{~@var{user-id}/} to mean the home directory of a user whose
-login name is @code{user-id}.
+login name is @code{user-id}.  (On DOS and Windows systems, where a user
+doesn't have a home directory, Emacs substitutes @file{~/} with the
+value of the environment variable @code{HOME}; see @ref{General
+Variables}.)
 
   To access a file with @samp{$} in its name, type @samp{$$}.  This pair
 is converted to a single @samp{$} at the same time as variable