sort mod titles without articles

Knossos.NET/Classes/KnUtils.cs

@@ -5,6 +5,7 @@
 using System.Runtime.Intrinsics.X86;
 using System.Text;
 using System.Text.Json;
+using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Security.Cryptography;
@@ -951,6 +952,20 @@ public static string EscapeUnderscores(string? text)
             return text.Replace("_", "__");
         }
 
+        /// <summary>
+        /// Gets rid of 'A', 'An', and 'The' at the beginning of a string, case-insensitively
+        /// </summary>
+        /// <param name="text">A string</param>
+        /// <returns>The string with any articles removed from the beginning</returns>
+        public static string RemoveArticles(string title)
+        {
+            var match = Regex.Match(title, "((A)|(An)|(The))\\s+", RegexOptions.IgnoreCase);
+            if (match.Index == 0 && match.Length > 0)
+                return title.Substring(match.Length);
+            else
+                return title;
+        }
+
         /// <summary>
         /// Checks if a file is currently in use
         /// </summary>

Knossos.NET/Models/Mod.cs

@@ -779,19 +779,18 @@ public async Task LoadFulLNebulaData()
 
         /// <summary>
         /// To use with the List .Sort()
-        /// Retuns a list that is sort from older to newer
+        /// Orders the two mods from older to newer
         /// </summary>
         /// <param name="mod1"></param>
         /// <param name="mod2"></param>
         public static int CompareVersion(Mod mod1, Mod mod2)
         {
-            //inverted
             return SemanticVersion.Compare(mod1.version, mod2.version);
         }
 
         /// <summary>
         /// To use with the List .Sort()
-        /// Retuns a list that is sort from newer to older
+        /// Orders the two mods from newer to older
         /// </summary>
         /// <param name="mod1"></param>
         /// <param name="mod2"></param>
@@ -801,6 +800,17 @@ public static int CompareVersionNewerToOlder(Mod mod1, Mod mod2)
             return SemanticVersion.Compare(mod2.version, mod1.version);
         }
 
+        /// <summary>
+        /// To use with the List .Sort()
+        /// Orders the two titles using a regular case-insensitive string comparison, but ignoring any leading 'A', 'An', or 'The' articles
+        /// </summary>
+        /// <param name="title1"></param>
+        /// <param name="title2"></param>
+        public static int CompareTitles(string title1, string title2)
+        {
+            return String.Compare(KnUtils.RemoveArticles(title1), KnUtils.RemoveArticles(title2), StringComparison.CurrentCultureIgnoreCase);
+        }
+
         /// <summary>
         /// Compares two mods and determines if the metadata is different
         /// Full data must be loaded on both mods for this to work properly

Knossos.NET/ViewModels/ModListViewModel.cs

@@ -177,7 +177,7 @@ private int CompareMods(Mod modA,Mod modB)
                 switch (sortType)
                 {
                     case MainWindowViewModel.SortType.name:
-                        return String.Compare(modA.title, modB.title);
+                        return Mod.CompareTitles(modA.title, modB.title);
                     case MainWindowViewModel.SortType.release:
                         if (modA.firstRelease == modB.firstRelease)
                             return 0;

Knossos.NET/ViewModels/NebulaModListViewModel.cs

@@ -327,7 +327,7 @@ private int CompareMods(Mod modA,Mod modB)
                 switch (sortType)
                 {
                     case MainWindowViewModel.SortType.name:
-                        return String.Compare(modA.title, modB.title);
+                        return Mod.CompareTitles(modA.title, modB.title);
                     case MainWindowViewModel.SortType.release:
                         if (modA.firstRelease == modB.firstRelease)
                             return 0;
@@ -370,7 +370,7 @@ private int CompareMods(Mod modA,Mod modB)
                 return 0; 
             }
         }
-        
+
         /// <summary>
         /// Changes a modcard to "installing" mode
         /// </summary>