--- a/mercurial/utils/procutil.py Mon Jul 06 17:44:25 2020 +0200
+++ b/mercurial/utils/procutil.py Mon Jul 06 17:51:18 2020 +0200
@@ -80,9 +80,16 @@
return LineBufferedWrapper(stream)
-stderr = pycompat.stderr
-stdin = pycompat.stdin
-stdout = pycompat.stdout
+if pycompat.ispy3:
+ # TODO: .buffer might not exist if std streams were replaced; we'll need
+ # a silly wrapper to make a bytes stream backed by a unicode one.
+ stdin = sys.stdin.buffer
+ stdout = sys.stdout.buffer
+ stderr = sys.stderr.buffer
+else:
+ stdin = sys.stdin
+ stdout = sys.stdout
+ stderr = sys.stderr
if pycompat.iswindows:
stdout = platform.winstdout(stdout)