Fixes emoji name to code missing tones

app/helpers/application_helper.rb

@@ -220,7 +220,7 @@ module ApplicationHelper
 
   def gsub_emoji_to_unicode(str)
     if str
-      str.gsub(/:([\w\-+]*):/) { |name| Emoji.lookup_unicode($1) || name }
+      str.gsub(/:([\w\-+]*(?::t\d)?):/) { |name| Emoji.lookup_unicode($1) || name }
     end
   end
 

app/models/emoji.rb

@@ -2,6 +2,8 @@ class Emoji
   # update this to clear the cache
   EMOJI_VERSION = "v5"
 
+  FITZPATRICK_SCALE ||= [ "1f3fb", "1f3fc", "1f3fd", "1f3fe", "1f3ff" ]
+
   include ActiveModel::SerializerSupport
 
   attr_reader :path
@@ -147,8 +149,17 @@ class Emoji
 
       db['emojis'].each do |e|
         next if e['name'] == 'tm'
+
         code = replacement_code(e['code'])
-        map[e['name']] = code if code
+        next unless code
+
+        map[e['name']] = code
+        if Emoji.tonable_emojis.include?(e['name'])
+          FITZPATRICK_SCALE.each_with_index do |scale, index|
+            toned_code = (code.codepoints.insert(1, scale.to_i(16))).pack("U*")
+            map["#{e['name']}:t#{index+2}"] = toned_code
+          end
+        end
       end
 
       Emoji.aliases.each do |key, alias_names|

spec/models/emoji_spec.rb

@@ -28,4 +28,18 @@ describe Emoji do
     end
   end
 
+  describe '.lookup_unicode' do
+    it 'should return the emoji' do
+      expect(Emoji.lookup_unicode("blonde_man")).to eq("👱")
+    end
+
+    it 'should return an aliased emoji' do
+      expect(Emoji.lookup_unicode("anger_right")).to eq("🗯")
+    end
+
+    it 'should return a skin toned emoji' do
+      expect(Emoji.lookup_unicode("blonde_woman:t6")).to eq("👱🏿‍♀️")
+    end
+  end
+
 end