--- a/mercurial/windows.py Sat Jul 10 13:10:18 2021 +0200
+++ b/mercurial/windows.py Sat Jul 10 13:46:24 2021 +0200
@@ -333,6 +333,25 @@
return encoding.upper(path) # NTFS compares via upper()
+DRIVE_RE_B = re.compile(b'^[a-z]:')
+DRIVE_RE_S = re.compile('^[a-z]:')
+
+
+def abspath(path):
+ abs_path = os.path.abspath(path) # re-exports
+ # Python on Windows is inconsistent regarding the capitalization of drive
+ # letter and this cause issue with various path comparison along the way.
+ # So we normalize the drive later to upper case here.
+ #
+ # See https://bugs.python.org/issue40368 for and example of this hell.
+ if isinstance(abs_path, bytes):
+ if DRIVE_RE_B.match(abs_path):
+ abs_path = abs_path[0:1].upper() + abs_path[1:]
+ elif DRIVE_RE_S.match(abs_path):
+ abs_path = abs_path[0:1].upper() + abs_path[1:]
+ return abs_path
+
+
# see posix.py for definitions
normcasespec = encoding.normcasespecs.upper
normcasefallback = encoding.upperfallback