Merge upstream (#111)

app/lib/emoji.rb

@@ -6,7 +6,7 @@ class Emoji
   include Singleton
 
   def initialize
-    data = Oj.load(File.open(File.join(Rails.root, 'lib', 'assets', 'emoji.json')))
+    data = Oj.load(File.open(Rails.root.join('lib', 'assets', 'emoji.json')))
 
     @map = {}
 
@@ -32,7 +32,7 @@ class Emoji
 
   def codepoint_to_unicode(codepoint)
     if codepoint.include?('-')
-      codepoint.split('-').map(&:hex).pack('U')
+      codepoint.split('-').map(&:hex).pack('U*')
     else
       [codepoint.hex].pack('U')
     end

app/lib/exceptions.rb

@@ -8,11 +8,11 @@ module Mastodon
 
   class UnexpectedResponseError < Error
     def initialize(response = nil)
-      @response = response
-    end
-
-    def to_s
-      "#{@response.uri} returned code #{@response.code}"
+      if response.respond_to? :uri
+        super("#{response.uri} returned code #{response.code}")
+      else
+        super
+      end
     end
   end
 end

app/lib/language_detector.rb

@@ -33,9 +33,7 @@ class LanguageDetector
 
   def simplified_text
     text.dup.tap do |new_text|
-      URI.extract(new_text).each do |url|
-        new_text.gsub!(url, '')
-      end
+      new_text.gsub!(FetchLinkCardService::URL_PATTERN, '')
       new_text.gsub!(Account::MENTION_RE, '')
       new_text.gsub!(Tag::HASHTAG_RE, '')
       new_text.gsub!(/\s+/, ' ')