From 0711429637bd6a565b72588b8a0e6eacf53b45b4 Mon Sep 17 00:00:00 2001 From: Chong Yidong Date: Thu, 16 Oct 2008 17:59:34 +0000 Subject: [PATCH] (Fexpand_file_name): Doc fix. --- src/fileio.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/fileio.c b/src/fileio.c index cf3ec5bc44f..0208b9c618a 100644 --- a/src/fileio.c +++ b/src/fileio.c @@ -819,7 +819,13 @@ note that these simplifications are done without checking the resulting file names in the file system. An initial `~/' expands to your home directory. An initial `~USER/' expands to USER's home directory. -See also the function `substitute-in-file-name'. */) +See also the function `substitute-in-file-name'. + +For technical reasons, this function can return correct but +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). */) (name, default_directory) Lisp_Object name, default_directory; { -- 2.39.5