From 607368a66cba897e9add4d6c5d6132b60b54a506 Mon Sep 17 00:00:00 2001
From: Brian Cain <bcain@hashicorp.com>
Date: Wed, 14 Mar 2018 15:54:38 -0700
Subject: [PATCH] Introduce merge function to preserve internal state

---
 plugins/kernel_v2/config/trigger.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/plugins/kernel_v2/config/trigger.rb b/plugins/kernel_v2/config/trigger.rb
index 62754eea7..1cbd88a25 100644
--- a/plugins/kernel_v2/config/trigger.rb
+++ b/plugins/kernel_v2/config/trigger.rb
@@ -102,6 +102,19 @@ module VagrantPlugins
         return trigger
       end
 
+      # Solve the mystery of disappearing state??
+      def merge(other)
+        super.tap do |result|
+          other_defined_before_triggers = other.instance_variable_get(:@_before_triggers)
+          other_defined_after_triggers = other.instance_variable_get(:@_after_triggers)
+
+          #overrides???
+
+          result.instance_variable_set(:@_before_triggers, other_defined_before_triggers)
+          result.instance_variable_set(:@_after_triggers, other_defined_after_triggers)
+        end
+      end
+
       def finalize!
         # read through configured settings blocks and set their values
         # and then set up action hooks here?