bsh.help.run= "usage: Thread bg( filename )";
//import bsh.NameSpace;

/**
	Source a command in its own thread in the caller's namespace
*/
Thread bg( String filename ) {

	callerNameSpace = this.caller.namespace;
	run() {
	/*
	used to be subordinate namespace
		ns = new NameSpace( 
			this.caller.namespace, 
			"Running command: "+filename, super.interpreter );
	*/
		this.interpreter.source( filename, callerNameSpace );
	}

	thread = new Thread( this );
	thread.start();
	return thread;
}