+# Turn on --progress by default if stderr is a tty and output is
+# either going to a named file, or going (via stdout) to something
+# that isn't a tty.
+if (not (args.batch_progress or args.no_progress)
+ and sys.stderr.isatty()
+ and (args.destination != '/dev/stdout'
+ or not sys.stdout.isatty())):
+ args.progress = True
+