(symbol-file): Doc fix.

diff --git a/lisp/loadhist.el b/lisp/loadhist.el
index 2e91f24b55f90271d04a8104560b766017bf6fe9..ffa279d6d27a7f4d7f5afa82c60eadbda431c98c 100644 (file)
--- a/lisp/loadhist.el
+++ b/lisp/loadhist.el
@@ -38,7 +38,10 @@ which is cleared out before dumping to make Emacs smaller.")
 
 (defun symbol-file (sym)
   "Return the input source from which SYM was loaded.
-This is a file name, or nil if the source was a buffer with no associated file."
+The value is normally a string that was passed to `load':
+either an absolute file name, or a library name
+\(with no directory name and no `.el' or `.elc' at the end).
+It can also be nil, if the definition is not associated with any file."
   (unless load-history-loaded
     (load (expand-file-name
           ;; fns-XX.YY.ZZ.el does not work on DOS filesystem.