No longer using stubs for non-actions.

syntax_tree.lua

@@ -254,7 +254,10 @@ do
           [patt:as_var()] = self
         }
       end
-      if patt:get_stub() ~= self:get_stub() then
+      if patt.type ~= self.type then
+        return nil
+      end
+      if patt.type == "Action" and patt:get_stub() ~= self:get_stub() then
         return nil
       end
       if #self ~= #patt then

syntax_tree.moon

@@ -134,7 +134,8 @@ class SyntaxTree
     matching: (patt)=>
         if patt.type == "Var"
             return {[patt\as_var!]:@}
-        return nil if patt\get_stub! != @get_stub!
+        return nil if patt.type != @type
+        return nil if patt.type == "Action" and patt\get_stub! != @get_stub!
         -- TODO: support vararg matches like (\(say 1 2 3), matching \(say *$values))
         return nil if #@ != #patt
         match = {}