Update method_missing support to reduce exceptions

include/chaiscript/dispatchkit/dispatchkit.hpp

@@ -831,9 +831,19 @@ namespace chaiscript
           if (is_attribute_call(funs, params, t_has_params)) {
             return do_attribute_call(1, params, funs, m_conversions);
           } else {
+            std::exception_ptr except;
+
+            if (!funs.empty()) {
               try {
                 return dispatch::dispatch(funs, params, m_conversions);
               } catch(chaiscript::exception::dispatch_error&) {
+                except = std::current_exception();
+              }
+            }
+
+            // If we get here we know that either there was no method with that name,
+            // or there was no matching method
+
             const auto functions = get_function("method_missing");
 
             const bool is_no_param = [&]()->bool{
@@ -855,7 +865,12 @@ namespace chaiscript
               }
             }
 
-              throw;
+            // If we get all the way down here we know there was no "method_missing"
+            // method at all.
+            if (except) {
+              std::rethrow_exception(except);
+            } else {
+              throw chaiscript::exception::dispatch_error(params, std::vector<Const_Proxy_Function>(funs.begin(), funs.end()));
             }
           }
         }