Print useful error messages when invalid options are given (flutter/engine#37212)

2022-11-01 14:59:13 -04:00
parent 51c4ccf7b3
commit 5e12486ff9
1 changed files with 1 additions and 0 deletions
--- a/engine/src/flutter/sky/tools/flutter_gdb
+++ b/engine/src/flutter/sky/tools/flutter_gdb
@@ -223,6 +223,7 @@ def main():
    subparsers = parser.add_subparsers(help='sub-command help')
    parser.add_argument('--adb', type=str, help='path to ADB tool')
    parser.add_argument('--device', type=str, help='serial number of the target device')
+    parser.set_defaults(func=lambda args: parser.print_help())

    commands = [
        GdbClient(),