add note about os.path.join and drive letters on Windows.

diff --git a/Doc/lib/libposixpath.tex b/Doc/lib/libposixpath.tex
index d0bb73b483515ea9b6a07334eb0c1e5cc0765d86..11a574027422aced08e504c37cf80882f757071c 100644 (file)
--- a/Doc/lib/libposixpath.tex
+++ b/Doc/lib/libposixpath.tex
@@ -123,7 +123,10 @@ Joins one or more path components intelligently.  If any component is
 an absolute path, all previous components are thrown away, and joining
 continues.  The return value is the concatenation of \var{path1}, and
 optionally \var{path2}, etc., with exactly one slash (\code{'/'})
-inserted between components, unless \var{path} is empty.
+inserted between components, unless \var{path} is empty.  Note that on
+Windows, since there is a current directory for each drive,
+{}\function{os.path.join("c:", "foo")} represents a path relative to the
+current directory on drive C:, not \code{c:\\foo}.
 \end{funcdesc}
 
 \begin{funcdesc}{normcase}{path}