py3: enable legacy fs encoding to fix filename compatibility on Windows
This patch is untested. I just followed the instruction:
https://docs.python.org/3/whatsnew/3.6.html#pep-529-change-windows-filesystem-encoding-to-utf-8
--- a/mercurial/pycompat.py Sat Oct 19 14:30:19 2019 +0900
+++ b/mercurial/pycompat.py Tue Oct 15 22:44:55 2019 +0900
@@ -92,6 +92,13 @@
import io
import struct
+ if os.name == r'nt' and sys.version_info >= (3, 6):
+ # MBCS (or ANSI) filesystem encoding must be used as before.
+ # Otherwise non-ASCII filenames in existing repositories would be
+ # corrupted.
+ # This must be set once prior to any fsencode/fsdecode calls.
+ sys._enablelegacywindowsfsencoding()
+
fsencode = os.fsencode
fsdecode = os.fsdecode
oscurdir = os.curdir.encode('ascii')
@@ -137,8 +144,8 @@
#
# https://hg.python.org/cpython/file/v3.5.1/Programs/python.c#l55
#
- # TODO: On Windows, the native argv is wchar_t, so we'll need a different
- # workaround to simulate the Python 2 (i.e. ANSI Win32 API) behavior.
+ # On Windows, the native argv is unicode and is converted to MBCS bytes
+ # since we do enable the legacy filesystem encoding.
if getattr(sys, 'argv', None) is not None:
sysargv = list(map(os.fsencode, sys.argv))