From 6fc35de5e88bb4035fa2a2be28b09d01fc8ebd53 Mon Sep 17 00:00:00 2001
From: Michal 'vorner' Vaner <vorner@vorner.cz>
Date: Sun, 27 Aug 2017 19:20:03 +0200
Subject: [PATCH] Fail ./x.py on invalid command

Make the ./x.py script fail when run with an invalid command, like:

  ./x.py nonsense

This helps in case of chaining multiple runs, eg.:

  ./x.py biuld && ./x.py test
---
 src/bootstrap/flags.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bootstrap/flags.rs b/src/bootstrap/flags.rs
index a84d43d3deede..7546d7fd4f07a 100644
--- a/src/bootstrap/flags.rs
+++ b/src/bootstrap/flags.rs
@@ -136,7 +136,7 @@ To learn more about a subcommand, run `./x.py <subcommand> -h`");
             None => {
                 // No subcommand -- show the general usage and subcommand help
                 println!("{}\n", subcommand_help);
-                process::exit(0);
+                process::exit(1);
             }
         };