Fixed: Double periods in filenames will be replaces with a single period

src/NzbDrone.Core.Test/OrganizerTests/GetNewFilenameFixture.cs

@@ -405,5 +405,35 @@ namespace NzbDrone.Core.Test.OrganizerTests
             Subject.BuildFilename(new List<Episode> { episode }, new Series { Title = "30 Rock" }, _episodeFile)
                    .Should().Be("30 Rock - S06E06 - Part 1");
         }
+
+        [Test]
+        public void should_replace_double_period_with_single_period()
+        {
+            _namingConfig.StandardEpisodeFormat = "{Series.Title}.S{season:00}E{episode:00}.{Episode.Title}";
+
+            var episode = Builder<Episode>.CreateNew()
+                            .With(e => e.Title = "Part 1")
+                            .With(e => e.SeasonNumber = 6)
+                            .With(e => e.EpisodeNumber = 6)
+                            .Build();
+
+            Subject.BuildFilename(new List<Episode> { episode }, new Series { Title = "Chicago P.D." }, _episodeFile)
+                   .Should().Be("Chicago.P.D.S06E06.Part.1");
+        }
+
+        [Test]
+        public void should_replace_triple_period_with_single_period()
+        {
+            _namingConfig.StandardEpisodeFormat = "{Series.Title}.S{season:00}E{episode:00}.{Episode.Title}";
+
+            var episode = Builder<Episode>.CreateNew()
+                            .With(e => e.Title = "Part 1")
+                            .With(e => e.SeasonNumber = 6)
+                            .With(e => e.EpisodeNumber = 6)
+                            .Build();
+
+            Subject.BuildFilename(new List<Episode> { episode }, new Series { Title = "Chicago P.D.." }, _episodeFile)
+                   .Should().Be("Chicago.P.D.S06E06.Part.1");
+        }
     }
 }

src/NzbDrone.Core/Organizer/FileNameBuilder.cs

@@ -46,6 +46,8 @@ namespace NzbDrone.Core.Organizer
         public static readonly Regex SeriesTitleRegex = new Regex(@"(?<token>\{(?:Series)(?<separator>\s|\.|-|_)Title\})",
                                                                             RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
+        private static readonly Regex FilenameCleanupRegex = new Regex(@"\.{2,}", RegexOptions.Compiled);
+
         private static readonly char[] EpisodeTitleTrimCharaters = new[] { ' ', '.', '?' };
 
         public FileNameBuilder(INamingConfigService namingConfigService,
@@ -90,6 +92,7 @@ namespace NzbDrone.Core.Organizer
 
             var sortedEpisodes = episodes.OrderBy(e => e.EpisodeNumber).ToList();
             var pattern = namingConfig.StandardEpisodeFormat;
+            
             var episodeTitles = new List<string>
             {
                 sortedEpisodes.First().Title.TrimEnd(EpisodeTitleTrimCharaters)
@@ -153,8 +156,11 @@ namespace NzbDrone.Core.Organizer
 
             tokenValues.Add("{Episode Title}", GetEpisodeTitle(episodeTitles));
             tokenValues.Add("{Quality Title}", GetQualityTitle(episodeFile.Quality));
-            
-            return CleanFilename(ReplaceTokens(pattern, tokenValues).Trim());
+
+            var filename = ReplaceTokens(pattern, tokenValues).Trim();
+            filename = FilenameCleanupRegex.Replace(filename, match => match.Captures[0].Value[0].ToString() );
+
+            return CleanFilename(filename);
         }
 
         public string BuildFilePath(Series series, int seasonNumber, string fileName, string extension)