Fixed: Parsing of Extended Multi-episode format file names

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

@@ -66,6 +66,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("[AgusiQ-TorrentS.pl] The.Name.of.the.Rose.S01E05-E06.PL.1080i.Ralf [jans12]", "The Name of the Rose", 1, new[] { 5, 6 })]
         [TestCase("The.Name.of.the.Rose.S01E05-6.PL.1080p.WEBRip.x264-666", "The Name of the Rose", 1, new[] { 5, 6 })]
         [TestCase("Series Title - S15E06-07 - City Sushi HDTV-720p", "Series Title", 15, new[] { 6, 7 })]
+        [TestCase("Series Title - S01E01-02-03 - Episode Title HDTV-720p", "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

@@ -117,7 +117,7 @@ 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)