non-intuitive results for the root directory; for instance,
\(expand-file-name ".." "/") returns "/..". For this reason, use
\(directory-file-name (file-name-directory dirname)) to traverse a
-filesystem tree, not (expand-file-name ".." dirname). */)
+filesystem tree, not (expand-file-name ".." dirname). Note: make
+sure DIRNAME in this example doesn't end in a slash, unless it's
+the root directory. */)
(Lisp_Object name, Lisp_Object default_directory)
{
/* These point to SDATA and need to be careful with string-relocation