Add support for flag to show an unfiltered list.

Command.py

@@ -16,5 +16,15 @@ class Command(object):
 
         return value
 
+    def argumentShift(self, p_expr):
+        """
+        Returns true when the first argument equals the given expression.
+        """
+        if len(self.args) and self.argument(0) == p_expr:
+            del self.args[0]
+            return True
+
+        return False
+
     def usage(self):
         return ""

ListCommand.py

@@ -8,9 +8,11 @@ class ListCommand(Command.Command):
         super(ListCommand, self).__init__(p_args, p_todolist)
 
     def execute(self):
+        showAll = self.argumentShift("-x")
+
         sorter = Sorter.Sorter(Config.SORT_STRING)
-        filters = [Filter.DependencyFilter(self.todolist),
-                   Filter.RelevanceFilter()]
+        filters = [] if showAll else \
+            [Filter.DependencyFilter(self.todolist), Filter.RelevanceFilter()]
 
         if len(self.args) > 0:
             filters.append(Filter.GrepFilter(self.argument(0)))