[PATCH 1 of 8] py3: don't use os.getcwdb() on Windows to avoid DeprecationWarnings

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1537573703 14400
#      Fri Sep 21 19:48:23 2018 -0400
# Node ID 758cf8cdf994942174238c28c8f06ece63dae2b5
# Parent  7e99b02768ef396b5c4b7a9126c329f49af3e2bf
py3: don't use os.getcwdb() on Windows to avoid DeprecationWarnings

See also ac32685011a3.

diff --git a/mercurial/pycompat.py b/mercurial/pycompat.py
--- a/mercurial/pycompat.py
+++ b/mercurial/pycompat.py
@@ -100,6 +100,13 @@ if ispy3:
     # os.getcwd() on Python 3 returns string, but it has os.getcwdb() which
     # returns bytes.
     getcwd = os.getcwdb
+
+    # Python 3 on Windows issues a DeprecationWarning about using the bytes API
+    # when os.getcwdb() is called.
+    if osname == 'nt':
+        from . import encoding   # encoding imports pycompat
+        getcwd = lambda: encoding.strtolocal(os.getcwd())
+
     sysplatform = sys.platform.encode('ascii')
     sysexecutable = sys.executable
     if sysexecutable: