Please help with shell cmdline parsing

I am having problems understanding what is happening within the cmdline parsing
part of the shell, just when I think that I have it sorted, it stops working. I
can get a given Syntax to work by itself but not together.

This is a simple bit of test code that I have taken from a class I am working
on to be able to pass a classpath/jar to the Java command and have other
classes included when loading the app. It expects either:

shelltest.ParameterTest -jar test.jar

shelltest.ParameterTest -cp test.jar:. test.Main

or

shelltest.ParameterTest test.Main

The true/false outputs are not consistant with what I would expect, any help
would be much appreciated. See code below for details (sorry about the formating).

TIA

Mark

/*
* Created on 4/02/2004
*/
package shelltest;

import org.jnode.shell.help.Argument;
import org.jnode.shell.help.Help;
import org.jnode.shell.help.OptionArgument;
import org.jnode.shell.help.Parameter;
import org.jnode.shell.help.ParsedArguments;
import org.jnode.shell.help.Syntax;

public class ParameterTest {

static final OptionArgument ARG_JAR_SWITCH =
new OptionArgument(
"jar",
"jar switch",
new OptionArgument.Option[] {
new OptionArgument.Option("-jar", "to execute a jar
file")});
static final Argument ARG_JAR = new Argument("jar", "the jar file to
execute");

static final OptionArgument ARG_CLASSPATH_SWITCH =
new OptionArgument(
"cp",
"classpath switch",
new OptionArgument.Option[] {
new OptionArgument.Option("-cp", "class search path of
directories and zip/jar files")});
static final Argument ARG_CLASSPATH = new Argument("classpath", "the value
of the classpath");

static final Argument ARG_CLASS = new Argument("classname", "the class to
excute");
static final Argument ARG_ARGS = new Argument("arg", "the argument(s) to
pass to the class", Argument.MULTI);

static final Parameter PARAM_CLASSPATH_SWITCH = new
Parameter(ARG_CLASSPATH_SWITCH, Parameter.MANDATORY);
static final Parameter PARAM_CLASSPATH = new Parameter(ARG_CLASSPATH,
Parameter.MANDATORY);

static final Parameter PARAM_JAR_SWITCH = new Parameter(ARG_JAR_SWITCH,
Parameter.MANDATORY);
static final Parameter PARAM_JAR = new Parameter(ARG_JAR,
Parameter.MANDATORY);

static final Parameter PARAM_CLASS = new Parameter(ARG_CLASS,
Parameter.MANDATORY);
static final Parameter PARAM_ARGS = new Parameter(ARG_ARGS,
Parameter.OPTIONAL);

public static Help.Info HELP_INFO = new Help.Info(
"java",
new Syntax[] {
new Syntax(
"Execute the main method of the given jar file",

new Parameter[]{
PARAM_JAR_SWITCH,
PARAM_JAR,
PARAM_ARGS
}),
new Syntax(
"Execute the main method of the given java
class from the given classpath",
new Parameter[]{
PARAM_CLASSPATH_SWITCH,
PARAM_CLASSPATH,
PARAM_CLASS,
PARAM_ARGS
}),
new Syntax(
"Execute the main method of the given java
class",
new Parameter[]{
PARAM_CLASS,
PARAM_ARGS
})
}
);

public static void main(String[] args) {

if (args.length != 0) {
ParsedArguments parsedArguments = HELP_INFO.parse(args);
System.out.println(PARAM_JAR_SWITCH.isSet(parsedArguments));
System.out.println(PARAM_CLASSPATH_SWITCH.isSet(parsedArguments));
}
}
}