no longer assesses js-*.yml files to be languages of their own

lib/redmine/i18n.rb

@@ -101,7 +101,12 @@ module Redmine
     end
 
     def all_languages
-      @@all_languages ||= Dir.glob(Rails.root.join('config/locales/*.yml')).collect {|f| File.basename(f).split('.').first}.collect(&:to_sym)
+      @@all_languages ||= begin
+        Dir.glob(Rails.root.join('config/locales/*.yml'))
+          .map { |f| File.basename(f).split('.').first }
+          .reject! { |l| /\Ajs-/.match(l.to_s) }
+          .map(&:to_sym)
+      end
     end
 
     def find_language(lang)

spec/lib/redmine/i18n_spec.rb

@@ -29,7 +29,7 @@
 require 'spec_helper'
 
 module OpenProject
-  describe I18n do
+  describe I18n, type: :helper do
     include Redmine::I18n
 
     let(:format) { '%d/%m/%Y' }
@@ -69,5 +69,16 @@ module OpenProject
         expect(format_time_as_date(time,format)).to eq '30/06/2013'
       end
     end
+
+    describe :all_languages do
+      it 'should at least return en' do
+        # using this to ensure that the files are evaluated
+        expect(all_languages).to include(:en)
+      end
+
+      it 'should return no js language as they are duplicates of the rest of the other language' do
+        expect(all_languages.any?{ |l| /\Ajs-/.match(l.to_s) }).to be_false
+      end
+    end
   end
 end