Fixes tab-completion when editing default messages

src/main/java/net/knarcraft/blacksmith/command/BlackSmithConfigTabCompleter.java

@@ -31,6 +31,11 @@ public class BlackSmithConfigTabCompleter implements TabCompleter {
 
         //Arguments: <setting> [new value/material or enchantment] []
 
+        //Prevent tab-completion when typing messages with spaces
+        if (skipCompletionForSpacedMessage(args) != null) {
+            return new ArrayList<>();
+        }
+
         if (args.length == 1) {
             List<String> availableCommands = new ArrayList<>();
             availableCommands.add("reload");
@@ -55,6 +60,28 @@ public class BlackSmithConfigTabCompleter implements TabCompleter {
         return null;
     }
 
+    /**
+     * Checks whether to tab-complete nothing because a message containing spaces is being written
+     *
+     * @param args <p>The arguments given by the user</p>
+     * @return <p>Null if not writing a spaced message</p>
+     */
+    private List<String> skipCompletionForSpacedMessage(String[] args) {
+        if (args.length > 2) {
+            NPCSetting npcSetting = null;
+            for (NPCSetting setting : NPCSetting.values()) {
+                if (setting.getCommandName().equalsIgnoreCase(args[0])) {
+                    npcSetting = setting;
+                    break;
+                }
+            }
+            if (npcSetting != null && npcSetting.getPath().startsWith("defaults.messages")) {
+                return new ArrayList<>();
+            }
+        }
+        return null;
+    }
+
     /**
      * Gets tab-completions for a selected material or enchantment
      *