4 files changed, 21 insertions, 19 deletions
diff --git a/Emby.Naming/Video/CleanStringParser.cs b/Emby.Naming/Video/CleanStringParser.cs
index 4eef3ebc5e..b813335008 100644
--- a/Emby.Naming/Video/CleanStringParser.cs
+++ b/Emby.Naming/Video/CleanStringParser.cs
@@ -17,38 +17,39 @@ namespace Emby.Naming.Video
         /// <param name="expressions">List of regex to parse name and year from.</param>
         /// <param name="newName">Parsing result string.</param>
         /// <returns>True if parsing was successful.</returns>
-        public static bool TryClean([NotNullWhen(true)] string? name, IReadOnlyList<Regex> expressions, out ReadOnlySpan<char> newName)
+        public static bool TryClean([NotNullWhen(true)] string? name, IReadOnlyList<Regex> expressions, out string newName)
         {
             if (string.IsNullOrEmpty(name))
             {
-                newName = ReadOnlySpan<char>.Empty;
+                newName = string.Empty;
                 return false;
             }
 
-            var len = expressions.Count;
-            for (int i = 0; i < len; i++)
+            // Iteratively apply the regexps to clean the string.
+            bool cleaned = false;
+            for (int i = 0; i < expressions.Count; i++)
             {
                 if (TryClean(name, expressions[i], out newName))
                 {
-                    return true;
+                    cleaned = true;
+                    name = newName;
                 }
             }
 
-            newName = ReadOnlySpan<char>.Empty;
-            return false;
+            newName = cleaned ? name : string.Empty;
+            return cleaned;
         }
 
-        private static bool TryClean(string name, Regex expression, out ReadOnlySpan<char> newName)
+        private static bool TryClean(string name, Regex expression, out string newName)
         {
             var match = expression.Match(name);
-            int index = match.Index;
-            if (match.Success && index != 0)
+            if (match.Success && match.Groups.TryGetValue("cleaned", out var cleaned))
             {
-                newName = name.AsSpan().Slice(0, match.Index);
+                newName = cleaned.Value;
                 return true;
             }
 
-            newName = ReadOnlySpan<char>.Empty;
+            newName = string.Empty;
             return false;
         }
     }
diff --git a/Emby.Naming/Video/ExtraResolver.cs b/Emby.Naming/Video/ExtraResolver.cs
index 1fade985be..7bc226614e 100644
--- a/Emby.Naming/Video/ExtraResolver.cs
+++ b/Emby.Naming/Video/ExtraResolver.cs
@@ -1,6 +1,5 @@
 using System;
 using System.IO;
-using System.Linq;
 using System.Text.RegularExpressions;
 using Emby.Naming.Audio;
 using Emby.Naming.Common;
@@ -12,6 +11,7 @@ namespace Emby.Naming.Video
     /// </summary>
     public class ExtraResolver
     {
+        private static readonly char[] _digits = new[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
         private readonly NamingOptions _options;
 
         /// <summary>
@@ -63,9 +63,10 @@ namespace Emby.Naming.Video
                 }
                 else if (rule.RuleType == ExtraRuleType.Suffix)
                 {
-                    var filename = Path.GetFileNameWithoutExtension(pathSpan);
+                    // Trim the digits from the end of the filename so we can recognize things like -trailer2
+                    var filename = Path.GetFileNameWithoutExtension(pathSpan).TrimEnd(_digits);
 
-                    if (filename.Contains(rule.Token, StringComparison.OrdinalIgnoreCase))
+                    if (filename.EndsWith(rule.Token, StringComparison.OrdinalIgnoreCase))
                     {
                         result.ExtraType = rule.ExtraType;
                         result.Rule = rule;
diff --git a/Emby.Naming/Video/VideoListResolver.cs b/Emby.Naming/Video/VideoListResolver.cs
index 7da2dcd7a5..ed7d511a39 100644
--- a/Emby.Naming/Video/VideoListResolver.cs
+++ b/Emby.Naming/Video/VideoListResolver.cs
@@ -21,7 +21,7 @@ namespace Emby.Naming.Video
         /// <param name="namingOptions">The naming options.</param>
         /// <param name="supportMultiVersion">Indication we should consider multi-versions of content.</param>
         /// <returns>Returns enumerable of <see cref="VideoInfo"/> which groups files together when related.</returns>
-        public static IEnumerable<VideoInfo> Resolve(List<FileSystemMetadata> files, NamingOptions namingOptions, bool supportMultiVersion = true)
+        public static IEnumerable<VideoInfo> Resolve(IEnumerable<FileSystemMetadata> files, NamingOptions namingOptions, bool supportMultiVersion = true)
         {
             var videoInfos = files
                 .Select(i => VideoResolver.Resolve(i.FullName, i.IsDirectory, namingOptions))
diff --git a/Emby.Naming/Video/VideoResolver.cs b/Emby.Naming/Video/VideoResolver.cs
index 3b1d906c64..4c9df27f50 100644
--- a/Emby.Naming/Video/VideoResolver.cs
+++ b/Emby.Naming/Video/VideoResolver.cs
@@ -87,9 +87,9 @@ namespace Emby.Naming.Video
                 year = cleanDateTimeResult.Year;
 
                 if (extraResult.ExtraType == null
-                    && TryCleanString(name, namingOptions, out ReadOnlySpan<char> newName))
+                    && TryCleanString(name, namingOptions, out var newName))
                 {
-                    name = newName.ToString();
+                    name = newName;
                 }
             }
 
@@ -138,7 +138,7 @@ namespace Emby.Naming.Video
         /// <param name="namingOptions">The naming options.</param>
         /// <param name="newName">Clean name.</param>
         /// <returns>True if cleaning of name was successful.</returns>
-        public static bool TryCleanString([NotNullWhen(true)] string? name, NamingOptions namingOptions, out ReadOnlySpan<char> newName)
+        public static bool TryCleanString([NotNullWhen(true)] string? name, NamingOptions namingOptions, out string newName)
         {
             return CleanStringParser.TryClean(name, namingOptions.CleanStringRegexes, out newName);
         }