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-rw-r--r--src/fileio.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/fileio.c b/src/fileio.c
index bbd1a4ef69c..0a52982291d 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -755,7 +755,9 @@ 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). */)
+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