From 8b830994b974fec7f1b34aa999f43f6370a09a17 Mon Sep 17 00:00:00 2001
From: Robert Lord <robert@lord.io>
Date: Thu, 15 Jun 2017 13:05:03 -0700
Subject: [PATCH] Fix bug where head count always got larger across reloads

---
 lib/unique_head.rb | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/lib/unique_head.rb b/lib/unique_head.rb
index 6103bbf06a6..c5dc2790e0b 100644
--- a/lib/unique_head.rb
+++ b/lib/unique_head.rb
@@ -1,13 +1,16 @@
 # Unique header generation
 require 'middleman-core/renderers/redcarpet'
 class UniqueHeadCounter < Middleman::Renderers::MiddlemanRedcarpetHTML
-  @@head_count = {}
+  def initialize
+    super
+    @head_count = {}
+  end
   def header(text, header_level)
     friendly_text = text.parameterize
-    @@head_count[friendly_text] ||= 0
-    @@head_count[friendly_text] += 1
-    if @@head_count[friendly_text] > 1
-      friendly_text += "-#{@@head_count[friendly_text]}"
+    @head_count[friendly_text] ||= 0
+    @head_count[friendly_text] += 1
+    if @head_count[friendly_text] > 1
+      friendly_text += "-#{@head_count[friendly_text]}"
     end
     return "<h#{header_level} id='#{friendly_text}'>#{text}</h#{header_level}>"
   end