HelpFormatter does not handle groups properly

The HelpFormatter repeats Options that have previously been printed with the group.

The problem is in the else block where options not belonging to a group are
printed. The code gets executed if it does not belong to a group OR if the
group has already been printed.

if( group != null && !list.contains(group)) {
// this gets executed when a new group is found
...
} else

{ // this gets executed if the group is OR ISN'T null, and if group is in list. .... } The else statement on line 267 should be as follows: }

else if (group == null) {
// This will make sure that options that have not been printed as part of a group
// will not get printed again.
...
}

I believe this change fixes the problem.

Also, the append on line 264 should add an extra space after the ] to make sure
that there will be a space between the ] and the next option.