properly implements .yaml handling in the codebase

.editorconfig

@@ -7,7 +7,7 @@ indent_size = 4
 trim_trailing_whitespace = true
 charset = utf-8
 
-[*.{csproj,xml,yml,dll.config,targets,props}]
+[*.{csproj,xml,yml,yaml,dll.config,targets,props}]
 indent_size = 2
 
 [*.gdsl]

Robust.Client/Prototypes/ClientPrototypeManager.cs

@@ -8,7 +8,6 @@
 using Robust.Client.Timing;
 using Robust.Shared;
 using Robust.Shared.Configuration;
-using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Network;
@@ -87,13 +86,20 @@ private void WatchResources()
             foreach (var path in Resources.GetContentRoots().Select(r => r.ToString())
                 .Where(r => Directory.Exists(r + "/Prototypes")).Select(p => p + "/Prototypes"))
             {
-                var watcher = new FileSystemWatcher(path, "*.yml")
+                var watcherYml = new FileSystemWatcher(path, "*.yml")
                 {
                     IncludeSubdirectories = true,
                     NotifyFilter = NotifyFilters.LastWrite
                 };
 
-                watcher.Changed += (_, args) =>
+                //filesystemwatcher doesnt support multiple filters, so we gotta do this. its a debug feature, so i dont think its that critical
+                var watcherYaml = new FileSystemWatcher(path, "*.yaml")
+                {
+                    IncludeSubdirectories = true,
+                    NotifyFilter = NotifyFilters.LastWrite
+                };
+
+                void OnWatcherOnChanged(object _, FileSystemEventArgs args)
                 {
                     switch (args.ChangeType)
                     {
@@ -123,12 +129,17 @@ private void WatchResources()
                             _reloadQueue.Add(relative);
                         }
                     });
-                };
+                }
+
+                watcherYml.Changed += OnWatcherOnChanged;
+                watcherYaml.Changed += OnWatcherOnChanged;
 
                 try
                 {
-                    watcher.EnableRaisingEvents = true;
-                    _watchers.Add(watcher);
+                    watcherYml.EnableRaisingEvents = true;
+                    watcherYaml.EnableRaisingEvents = true;
+                    _watchers.Add(watcherYml);
+                    _watchers.Add(watcherYaml);
                 }
                 catch (IOException ex)
                 {

Robust.Packaging/AssetProcessing/Passes/AssetPassNormalizeText.cs

@@ -12,6 +12,7 @@ public sealed class AssetPassNormalizeText : AssetPass
         "txt",
         "json",
         "yml",
+        "yaml",
         "html",
         "css",
         "js",

Robust.Shared/Prototypes/PrototypeManager.YamlLoad.cs

@@ -24,7 +24,7 @@ public void LoadDirectory(ResourcePath path, bool overwrite = false,
     {
         _hasEverBeenReloaded = true;
         var streams = Resources.ContentFindFiles(path)
-            .Where(filePath => filePath.Extension is "yml" or "yaml" && !filePath.Filename.StartsWith("."))
+            .Where(ResourcePath.IsYamlResourceFile)
             .ToArray();
 
         // Shuffle to avoid input data patterns causing uneven thread workloads.
@@ -84,7 +84,7 @@ public void LoadDirectory(ResourcePath path, bool overwrite = false,
     public Dictionary<string, HashSet<ErrorNode>> ValidateDirectory(ResourcePath path)
     {
         var streams = Resources.ContentFindFiles(path).ToList().AsParallel()
-            .Where(filePath => filePath.Extension is "yml" or "yaml" && !filePath.Filename.StartsWith("."));
+            .Where(ResourcePath.IsYamlResourceFile);
 
         var dict = new Dictionary<string, HashSet<ErrorNode>>();
         foreach (var resourcePath in streams)

Robust.Shared/Utility/ResourcePath.cs

@@ -717,5 +717,11 @@ private static void ValidateSeparate(string separator)
                 throw new ArgumentException("Separator may not be . or ..");
             }
         }
+
+        public static bool IsYamlResourceFile(ResourcePath filePath)
+        {
+            return filePath.Extension is "yml" or "yaml" &&
+                   !filePath.Filename.StartsWith(".", StringComparison.Ordinal);
+        }
     }
 }