procutil: don't assign stdin to None, use os.devnull instead
It will be painful to take care of procutil.stdin being None everywhere.
Thanks to Yuya who recommended it.
--- a/mercurial/utils/procutil.py Thu Dec 10 13:51:56 2020 +0530
+++ b/mercurial/utils/procutil.py Thu Dec 10 14:03:46 2020 +0530
@@ -126,7 +126,11 @@
# a silly wrapper to make a bytes stream backed by a unicode one.
# sys.stdin can be None
- stdin = sys.stdin.buffer if sys.stdin else sys.stdin
+ if sys.stdin:
+ stdin = sys.stdin.buffer
+ else:
+ stdin = open(os.devnull, 'rb')
+ os.close(stdin.fileno())
stdout = _make_write_all(sys.stdout.buffer)
stderr = _make_write_all(sys.stderr.buffer)
if pycompat.iswindows: