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-rw-r--r--app/helpers/settings_helper.rb5
-rw-r--r--app/lib/language_detector.rb11
-rw-r--r--app/views/settings/preferences/show.html.haml2
3 files changed, 16 insertions, 2 deletions
diff --git a/app/helpers/settings_helper.rb b/app/helpers/settings_helper.rb
index af950aa63..369a45680 100644
--- a/app/helpers/settings_helper.rb
+++ b/app/helpers/settings_helper.rb
@@ -30,6 +30,7 @@ module SettingsHelper
     th: 'ภาษาไทย',
     tr: 'Türkçe',
     uk: 'Українська',
+    zh: '中文',
     'zh-CN': '简体中文',
     'zh-HK': '繁體中文(香港)',
     'zh-TW': '繁體中文(臺灣)',
@@ -39,6 +40,10 @@ module SettingsHelper
     HUMAN_LOCALES[locale]
   end
 
+  def filterable_languages
+    I18n.available_locales.map { |locale| locale.to_s.split('-').first.to_sym }.uniq
+  end
+
   def hash_to_object(hash)
     HashObject.new(hash)
   end
diff --git a/app/lib/language_detector.rb b/app/lib/language_detector.rb
index cc7509fdc..1d9932b52 100644
--- a/app/lib/language_detector.rb
+++ b/app/lib/language_detector.rb
@@ -20,7 +20,16 @@ class LanguageDetector
   private
 
   def detected_language_code
-    result.language.to_sym if detected_language_reliable?
+    iso6391(result.language).to_sym if detected_language_reliable?
+  end
+
+  def iso6391(bcp47)
+    iso639 = bcp47.split('-').first
+
+    # CLD3 returns grandfathered language code for Hebrew
+    return 'he' if iso639 == 'iw'
+
+    ISO_639.find(iso639).alpha2
   end
 
   def result
diff --git a/app/views/settings/preferences/show.html.haml b/app/views/settings/preferences/show.html.haml
index fae6090c8..f42f92508 100644
--- a/app/views/settings/preferences/show.html.haml
+++ b/app/views/settings/preferences/show.html.haml
@@ -13,7 +13,7 @@
       selected: I18n.locale
 
     = f.input :filtered_languages,
-      collection: I18n.available_locales,
+      collection: filterable_languages,
       wrapper: :with_block_label,
       include_blank: false,
       label_method: lambda { |locale| human_locale(locale) },