(Where Defined): Fix description of symbol-file.

doc/lispref/ChangeLog

+2008-09-06  Martin Rudalics  <rudalics@gmx.at>
+
+	* loading.texi (Where Defined): Fix description of symbol-file.
+
 2008-08-26  Jason Rumney  <jasonr@gnu.org>
 
 	* display.texi (TIFF Images): New section describing :index property.

doc/lispref/loading.texi

@@ -798,12 +798,15 @@ with a call to @code{provide}.  The order of the elements in the
 
 @defun symbol-file symbol &optional type
 This function returns the name of the file that defined @var{symbol}.
-If @var{type} is @code{nil}, then any kind of definition is
-acceptable.  If @var{type} is @code{defun} or @code{defvar}, that
-specifies function definition only or variable definition only.
-
-The value is normally an absolute file name.  It can also be
-@code{nil}, if the definition is not associated with any file.
+If @var{type} is @code{nil}, then any kind of definition is acceptable.
+If @var{type} is @code{defun}, @code{defvar}, or @code{defface}, that
+specifies function definition, variable definition, or face definition
+only.
+
+The value is normally an absolute file name.  It can also be @code{nil},
+if the definition is not associated with any file.  If @var{symbol}
+specifies an autoloaded function, the value can be a relative file name
+without extension.
 @end defun
 
   The basis for @code{symbol-file} is the data in the variable