Stack: Fix argument-less invocation

Add nargs='?' to allow a missing positional argument. Bug: 131662960 Test: manual Change-Id: I47d98c7d903b0028bd9969580ff0217aaf0cfb78
2019-04-30 10:07:24 -07:00
parent f504f3a6ba
commit dcf9800c7e
1 changed files with 1 additions and 0 deletions
--- a/scripts/stack
+++ b/scripts/stack
@@ -29,6 +29,7 @@ def main():
  parser.add_argument('file',
                      metavar='FILE',
                      default='-',
+                      nargs='?',  # Required for default.
                      help='should contain a stack trace in it somewhere the '
                           'tool will find that and re-print it with source '
                           'files and line numbers. If you don\'t pass FILE, '