Fixed: Cleanup First Character in Title when using 'TitleFirstCharacter'

Closes #6055

src/NzbDrone.Core.Test/OrganizerTests/FileNameBuilderTests/SeriesTitleFirstCharacterFixture.cs

@@ -36,6 +36,12 @@ namespace NzbDrone.Core.Test.OrganizerTests.FileNameBuilderTests
         [TestCase("The Mist", "M\\The Mist")]
         [TestCase("A", "A\\A")]
         [TestCase("30 Rock", "3\\30 Rock")]
+        [TestCase("The '80s Greatest", "8\\The '80s Greatest")]
+        [TestCase("좀비버스", "좀\\좀비버스")]
+        [TestCase("¡Mucha Lucha!", "M\\¡Mucha Lucha!")]
+        [TestCase(".hack", "H\\hack")]
+        [TestCase("Ütopya", "U\\Ütopya")]
+
         public void should_get_expected_folder_name_back(string title, string expected)
         {
             _series.Title = title;

src/NzbDrone.Core/Organizer/FileNameBuilder.cs

@@ -377,6 +377,23 @@ namespace NzbDrone.Core.Organizer
             return title;
         }
 
+        public static string TitleFirstCharacter(string title)
+        {
+            if (char.IsLetterOrDigit(title[0]))
+            {
+                return title.Substring(0, 1).ToUpper().RemoveAccent();
+            }
+
+            // Try the second character if the first was non alphanumeric
+            if (char.IsLetterOrDigit(title[1]))
+            {
+                return title.Substring(1, 1).ToUpper().RemoveAccent();
+            }
+
+            // Default to "_" if no alphanumeric character can be found in the first 2 positions
+            return "_";
+        }
+
         public static string CleanFileName(string name)
         {
             return CleanFileName(name, NamingConfig.Default);
@@ -452,7 +469,7 @@ namespace NzbDrone.Core.Organizer
             tokenHandlers["{Series TitleWithoutYear}"] = m => TitleWithoutYear(series.Title);
             tokenHandlers["{Series TitleTheYear}"] = m => TitleYear(TitleThe(series.Title), series.Year);
             tokenHandlers["{Series TitleTheWithoutYear}"] = m => TitleWithoutYear(TitleThe(series.Title));
-            tokenHandlers["{Series TitleFirstCharacter}"] = m => TitleThe(series.Title).Substring(0, 1).FirstCharToUpper();
+            tokenHandlers["{Series TitleFirstCharacter}"] = m => TitleFirstCharacter(TitleThe(series.Title));
             tokenHandlers["{Series Year}"] = m => series.Year.ToString();
         }