Fixed: Parsing of some anime with standard numbers

Closes #4573

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

@@ -143,6 +143,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Series Title - S01E01 [AC3 5.1 Castellano][www.descargas2020.org]", "Series Title", 1, 1)]
         [TestCase("Series Title - [02x01] - Episode 1", "Series Title", 2, 1)]
         [TestCase("Series.Title.Of.S01E01.xyz", "Series Title Of", 1, 1)]
+        [TestCase("[RlsGrp] Series Title - S01E27 - 24-Hour", "Series Title", 1, 27)]
         //[TestCase("", "", 0, 0)]
         public void should_parse_single_episode(string postTitle, string title, int seasonNumber, int episodeNumber)
         {

src/NzbDrone.Core/Parser/Parser.cs

@@ -62,7 +62,7 @@ namespace NzbDrone.Core.Parser
                           RegexOptions.IgnoreCase | RegexOptions.Compiled),
 
                 //Anime - [SubGroup] Title Season+Episode + Absolute Episode Number
-                new Regex(@"^(?:\[(?<subgroup>.+?)\](?:_|-|\s|\.)?)(?<title>.+?)(?:[-_\W](?<![()\[!]))+(?:S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:\-|[ex]|\W[ex]){1,2}(?<episode>\d{2}(?!\d+)))+)(?:(?:_|-|\s|\.)+(?<absoluteepisode>(?<!\d+)\d{2,3}(\.\d{1,2})?(?!\d+)))+.*?(?<hash>\[\w{8}\])?(?:$|\.)",
+                new Regex(@"^(?:\[(?<subgroup>.+?)\](?:_|-|\s|\.)?)(?<title>.+?)(?:[-_\W](?<![()\[!]))+(?:S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:\-|[ex]|\W[ex]){1,2}(?<episode>\d{2}(?!\d+)))+)(?:(?:_|-|\s|\.)+(?<absoluteepisode>(?<!\d+)\d{2,3}(\.\d{1,2})?(?!\d+|\-[a-z])))+.*?(?<hash>\[\w{8}\])?(?:$|\.)",
                           RegexOptions.IgnoreCase | RegexOptions.Compiled),
 
                 //Anime - [SubGroup] Title Season+Episode