JBoss-CLI "deploy -l" always returns exit code 1 even when it succeeds

 55     protected void listDeployments(CommandContext ctx, boolean l) throws CommandFormatException {
 56         if(!l) {
 57             printList(ctx, Util.getDeployments(ctx.getModelControllerClient()), l);
 58             return;
 59         }
 60         final ModelControllerClient client = ctx.getModelControllerClient();
 61         final List<String> names = Util.getDeployments(client);
 62         if(names.isEmpty()) {
 63             return;
 64         }
 65 
 66         final StrictSizeTable table = new StrictSizeTable(names.size());
 67         final List<Property> descriptions = getDeploymentDescriptions(ctx, names).asPropertyList();
 68         for(Property prop : descriptions) {
 69             final ModelNode step = prop.getValue();
 70             if(step.hasDefined(Util.RESULT)) {
 71                 final ModelNode result = step.get(Util.RESULT);
 72                 table.addCell(Util.NAME, result.get(Util.NAME).asString());
 73                 table.addCell(Util.RUNTIME_NAME, result.get(Util.RUNTIME_NAME).asString());
 74                 if(result.has(Util.ENABLED)) {
 75                     table.addCell(Util.ENABLED, result.get(Util.ENABLED).asString());
 76                 }
 77                 if(result.has(Util.STATUS)) {
 78                     table.addCell(Util.STATUS, result.get(Util.STATUS).asString());
 79                 }
 80             }
 81             if(!table.isAtLastRow()) {
 82                 table.nextRow();
 83             }
 84         }
 85         throw new CommandFormatException(table.toString());   // -> CommandFormatException is always thrown. This looks a root cause.
 86     }

 907     public void handleSafe(String line) {
 908         exitCode = 0;
 909         try {
 910             handle(line);
 911         } catch(Throwable t) {
 912             error(Util.getMessagesFromThrowable(t));   // -> This is invoked when CommandFormatException happened in the above listDeployments. 
 913         }
 914     }
  :
 993     protected void error(String message) {
 994         this.exitCode = 1;
 995         printLine(message);
 996     }