Fixed: Parsing of Ger.Dub releases as German

Fixes #6778

Co-Authored-By: Mark McDowall <markus101@users.noreply.github.com>

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

@@ -51,15 +51,6 @@ namespace NzbDrone.Core.Test.ParserTests
             result.Languages.Should().Contain(Language.English);
         }
 
-        [TestCase("Movie.Title.1982.Ger.Eng.AC3.DL.BDRip.x264-iNCEPTiON")]
-        public void should_parse_language_english_german(string postTitle)
-        {
-            var result = Parser.Parser.ParseMovieTitle(postTitle, true);
-
-            result.Languages.Should().Contain(Language.German);
-            result.Languages.Should().Contain(Language.English);
-        }
-
         [TestCase("Movie.Title.1994.Spanish.1080p.XviD-LOL")]
         [TestCase("Movie Title (2020)[BDRemux AVC 1080p][E-AC3 DD Plus 5.1 Castellano-Inglés Subs]")]
         [TestCase("Movie Title (2020) [UHDRemux2160p HDR][DTS-HD MA 5.1 AC3 5.1 Castellano - True-HD 7.1 Atmos Inglés Subs]")]
@@ -72,6 +63,7 @@ namespace NzbDrone.Core.Test.ParserTests
         }
 
         [TestCase("Movie.Title.1994.German.1080p.XviD-LOL")]
+        [TestCase("Movie.Title.2016.Ger.Dub.AAC.1080p.WebDL.x264-TKP21")]
         public void should_parse_language_german(string postTitle)
         {
             var result = Parser.Parser.ParseMovieTitle(postTitle, true);

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -14,7 +14,7 @@ namespace NzbDrone.Core.Parser
     {
         private static readonly Logger Logger = NzbDroneLogger.GetLogger(typeof(LanguageParser));
 
-        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_|^)(?<italian>\b(?:ita|italian)\b)|(?<german>\b(?:german|videomann|ger)\b)|(?<flemish>flemish)|(?<bulgarian>bgaudio)|(?<brazilian>dublado)|(?<greek>greek)|(?<french>\b(?:FR|VO|VFF|VFQ|VFI|VF2|TRUEFRENCH|FRE|FRA)\b)|(?<russian>\brus\b)|(?<english>\beng\b)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<polish>\b(?:PL\W?DUB|DUB\W?PL|LEK\W?PL|PL\W?LEK)\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)",
+        private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_|^)(?<italian>\b(?:ita|italian)\b)|(?<german>german\b|videomann|ger[. ]dub)|(?<flemish>flemish)|(?<bulgarian>bgaudio)|(?<brazilian>dublado)|(?<greek>greek)|(?<french>\b(?:FR|VO|VFF|VFQ|VFI|VF2|TRUEFRENCH|FRE|FRA)\b)|(?<russian>\brus\b)|(?<english>\beng\b)|(?<hungarian>\b(?:HUNDUB|HUN)\b)|(?<hebrew>\bHebDub\b)|(?<polish>\b(?:PL\W?DUB|DUB\W?PL|LEK\W?PL|PL\W?LEK)\b)|(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
         private static readonly Regex CaseSensitiveLanguageRegex = new Regex(@"(?:(?i)(?<!SUB[\W|_|^]))(?:(?<lithuanian>\bLT\b)|(?<czech>\bCZ\b)|(?<polish>\bPL\b))(?:(?i)(?![\W|_|^]SUB))",