Fixed: Parsing of some multi-episode titles

Closes #4612

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

@@ -71,6 +71,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Series Title - [02x01-x02] - Episode 1", "Series Title", 2, new [] { 1, 2})]
         [TestCase("Series Title - [02x01-02] - Episode 1", "Series Title", 2, new [] { 1, 2})]
         [TestCase("Series Title (2011) - S01E23-E24 - ...E i nuovi orizzonti [HDTV 360p] [ITA].mkv", "Series Title (2011)", 1, new [] { 23, 24 })]
+        [TestCase("The Series Title! - S01E01-02-03", "The Series Title!", 1, new [] { 1, 2, 3 })]
         //[TestCase("", "", , new [] {  })]
         public void should_parse_multiple_episodes(string postTitle, string title, int season, int[] episodes)
         {

src/NzbDrone.Core/Parser/Parser.cs

@@ -138,7 +138,7 @@ namespace NzbDrone.Core.Parser
                           RegexOptions.IgnoreCase | RegexOptions.Compiled),
 
                 // Multi-episode with title (S01E05-06, S01E05-6)
-                new Regex(@"^(?<title>.+?)(?:[-_\W](?<![()\[!]))+S(?<season>(?<!\d+)(?:\d{1,2})(?!\d+))E(?<episode>\d{1,2}(?!\d+))(?:-(?<episode>\d{1,2}(?!\d+)))+[-_. ]",
+                new Regex(@"^(?<title>.+?)(?:[-_\W](?<![()\[!]))+S(?<season>(?<!\d+)(?:\d{1,2})(?!\d+))E(?<episode>\d{1,2}(?!\d+))(?:-(?<episode>\d{1,2}(?!\d+)))+(?:[-_. ]|$)",
                     RegexOptions.IgnoreCase | RegexOptions.Compiled), 
 
                 //Episodes with a title, Single episodes (S01E05, 1x05, etc) & Multi-episode (S01E05E06, S01E05-06, S01E05 E06, etc)