Fixed: Detection of russian releases using 'rus' in the title

src/NzbDrone.Core.Test/ParserTests/ParserFixture.cs

@@ -409,6 +409,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Burn.Notice.S04E15.Brotherly.Love.GERMAN.DUBBED.WS.WEBRiP.XviD.REPACK-TVP", Language.German)]
         [TestCase("Ray Donovan - S01E01.720p.HDtv.x264-Evolve (NLsub)", Language.Norwegian)]
         [TestCase("Shield,.The.1x13.Tueurs.De.Flics.FR.DVDRip.XviD", Language.French)]
+        [TestCase("True.Detective.S01E01.1080p.WEB-DL.Rus.Eng.TVKlondike", Language.Russian)]
         public void parse_language(string postTitle, Language language)
         {
             var result = Parser.Parser.ParseTitle(postTitle);

src/NzbDrone.Core/Parser/Parser.cs

@@ -108,7 +108,7 @@ namespace NzbDrone.Core.Parser
 
         private static readonly Regex MultiPartCleanupRegex = new Regex(@"\(\d+\)$", RegexOptions.Compiled);
 
-        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>ita|italian)|(?<german>german\b)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)FR)(?:\W|_)",
+        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>ita|italian)|(?<german>german\b)|(?<flemish>flemish)|(?<greek>greek)|(?<french>(?:\W|_)FR)(?:\W|_)|(?<russian>\brus\b)",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
         private static readonly Regex YearInTitleRegex = new Regex(@"^(?<title>.+?)(?:\W|_)?(?<year>\d{4})",
@@ -148,7 +148,6 @@ namespace NzbDrone.Core.Parser
 
                 foreach (var regex in ReportTitleRegex)
                 {
-                    var regexString = regex.ToString();
                     var match = regex.Matches(simpleTitle);
 
                     if (match.Count != 0)
@@ -467,6 +466,9 @@ namespace NzbDrone.Core.Parser
             if (match.Groups["french"].Success)
                 return Language.French;
 
+            if (match.Groups["russian"].Success)
+                return Language.Russian;
+
             return Language.English;
         }