ash-java/src/main/java/org/eiichiro/ash/Shell.java
public void start() {
		repl.set(true);
		String line = null;
		
		while (repl.get() && ((line = console.readLine()) != null)) {
			exec(line);
		}
	}
public void start() {
		repl.set(true);
		String line = null;
		
		while (repl.get() && ((line = console.readLine()) != null)) {
			exec(line);
		}
	}
Runs into the REPL mode.