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

diff --git a/src/bootstrap/flags.rs b/src/bootstrap/flags.rs
index a84d43d3deedef29b70483cfcfc7e29d36e9d702..7546d7fd4f07af7405c217aa4f718082566d4643 100644 (file)
--- a/src/bootstrap/flags.rs
+++ b/src/bootstrap/flags.rs
@@ -136,7 +136,7 @@ pub fn parse(args: &[String]) -> Flags {
             None => {
                 // No subcommand -- show the general usage and subcommand help
                 println!("{}\n", subcommand_help);
-                process::exit(0);
+                process::exit(1);
             }
         };