From dcf9800c7e172acd88c121134d4948d8647db53f Mon Sep 17 00:00:00 2001
From: Andreas Gampe <agampe@google.com>
Date: Tue, 30 Apr 2019 10:07:24 -0700
Subject: [PATCH] Stack: Fix argument-less invocation

Add nargs='?' to allow a missing positional argument.

Bug: 131662960
Test: manual
Change-Id: I47d98c7d903b0028bd9969580ff0217aaf0cfb78
---
 scripts/stack | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/stack b/scripts/stack
index 63600e351..ef28980fc 100755
--- 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, '