Index: lutinutil/src/java/org/codelutin/util/OptionParser.java
diff -u lutinutil/src/java/org/codelutin/util/OptionParser.java:1.12 lutinutil/src/java/org/codelutin/util/OptionParser.java:1.13
--- lutinutil/src/java/org/codelutin/util/OptionParser.java:1.12	Sun Dec 16 22:30:33 2007
+++ lutinutil/src/java/org/codelutin/util/OptionParser.java	Mon Dec 17 13:45:25 2007
@@ -357,7 +357,7 @@
                     continue;
                 }
                 // create a OptionContext
-                OptionContext optionContext = new OptionContext(this, definition, argsForOption.toArray(new String[argsForOption.size()]), pos, alias);
+                OptionContext optionContext = new OptionContext(this, definition, argsForOption.toArray(new String[argsForOption.size()]), start, alias);
                 // try to add the context
                 addSon(optionContext);
             }
@@ -472,6 +472,12 @@
             lastGroup = null;
             for (int i = 0; i < argumentsToTreate.length; i++) {
                 String argument = argumentsToTreate[i];
+                // always check if there is at least one group available
+                if (availabledGroups.isEmpty()) {
+                    // fatal error: no more args to treate for this option
+                    addError(_("lutinutil.parser.unavailable.option.argument", alias, argument,commandLinePosition+1+i));
+                    break;
+                }
                 ArgumentContext argumentContext = detectArgument(argument, i);
                 if (argumentContext == null) {
                     // mark the argument as unused