Issue #5117: Case normalization was needed on ntpath.relpath(). And
fixed root directory issue on posixpath.relpath(). (Ported working fixes
from ntpath)
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 2d68b73..c9829e1 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -447,8 +447,8 @@
if start is None:
start = curdir
- start_list = abspath(start).split(sep)
- path_list = abspath(path).split(sep)
+ start_list = [x for x in abspath(start).split(sep) if x]
+ path_list = [x for x in abspath(path).split(sep) if x]
# Work out how much of the filepath is shared by start and path.
i = len(commonprefix([start_list, path_list]))