Merge branch 'issue638-ouput-file' into 'master'

options: Forward `--output-file` to be reparsed for BaseFormatter

Closes #637

See merge request pycqa/flake8!427

1 files changed, 6 insertions, 1 deletions

diff --git a/src/flake8/main/application.py b/src/flake8/main/application.py
index 001ad6c..e4b7930 100644
--- a/src/flake8/main/application.py
+++ b/src/flake8/main/application.py
@@ -112,7 +112,12 @@ class Application(object):
         :rtype:
             (argparse.Namespace, list)
         """
-        return self.prelim_arg_parser.parse_known_args(argv)
+        args, rest = self.prelim_arg_parser.parse_known_args(argv)
+        # XXX (ericvw): Special case "forwarding" the output file option so
+        # that it can be reparsed again for the BaseFormatter.filename.
+        if args.output_file:
+            rest.extend(("--output-file", args.output_file))
+        return args, rest
 
     def exit(self):
         # type: () -> None