Don't require default-directory to end with a slash

* doc/lispref/files.texi (Magic File Names): Document the change
in unhandled-file-name-directory.

* lisp/url/url-handlers.el
(url-handler-unhandled-file-name-directory): Update accordingly.

* src/buffer.c (default-directory): Update the docsting.

* src/fileio.c (unhandled-file-name-directory): Default to calling
`file-name-as-directory'
(http://lists.gnu.org/archive/html/emacs-devel/2015-10/msg02294.html).

2 files changed, 3 insertions, 3 deletions

diff --git a/src/buffer.c b/src/buffer.c
index 380a7af33c1..91e42dca2bf 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5739,7 +5739,7 @@ visual lines rather than logical lines.  See the documentation of
 
   DEFVAR_PER_BUFFER ("default-directory", &BVAR (current_buffer, directory),
                      Qstringp,
-                     doc: /* Name of default directory of current buffer.  Should end with slash.
+                     doc: /* Name of default directory of current buffer.
 To interactively change the default directory, use command `cd'.  */);
 
   DEFVAR_PER_BUFFER ("auto-fill-function", &BVAR (current_buffer, auto_fill_function),
diff --git a/src/fileio.c b/src/fileio.c
index 428093bdc4b..6cda1e39eed 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -450,7 +450,7 @@ DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory,
 A `directly usable' directory name is one that may be used without the
 intervention of any file handler.
 If FILENAME is a directly usable file itself, return
-(file-name-directory FILENAME).
+(file-name-as-directory FILENAME).
 If FILENAME refers to a file which is not accessible from a local process,
 then this should return nil.
 The `call-process' and `start-process' functions use this function to
@@ -469,7 +469,7 @@ get a current directory to run processes in.  */)
       return STRINGP (handled_name) ? handled_name : Qnil;
     }
 
-  return Ffile_name_directory (filename);
+  return Ffile_name_as_directory (filename);
 }
 
 /* Maximum number of bytes that DST will be longer than SRC