From edba48d35f93076c75eb85e2d5f502ec17832986 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Fri, 9 Jun 2017 07:24:24 -0700
Subject: [PATCH] Add configuration option to prevent player names from being
 suggested


diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index c7f4c6f2..411e534b 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -1545,6 +1545,16 @@ public final class Bukkit {
     public static boolean reloadCommandAliases() {
         return server.reloadCommandAliases();
     }
+
+    /**
+     * Checks if player names should be suggested when a command returns {@code null} as
+     * their tab completion result.
+     *
+     * @return true if player names should be suggested
+     */
+    public static boolean suggestPlayerNamesWhenNullTabCompletions() {
+        return server.suggestPlayerNamesWhenNullTabCompletions();
+    }
     // Paper end
 
     @NotNull
diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
index f248400e..2778ce92 100644
--- a/src/main/java/org/bukkit/Server.java
+++ b/src/main/java/org/bukkit/Server.java
@@ -1353,4 +1353,14 @@ public interface Server extends PluginMessageRecipient {
     void reloadPermissions(); // Paper
 
     boolean reloadCommandAliases(); // Paper
+
+    // Paper start - allow preventing player name suggestions by default
+    /**
+     * Checks if player names should be suggested when a command returns {@code null} as
+     * their tab completion result.
+     *
+     * @return true if player names should be suggested
+     */
+    boolean suggestPlayerNamesWhenNullTabCompletions();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/command/PluginCommand.java b/src/main/java/org/bukkit/command/PluginCommand.java
index 30597d30..6206ff44 100644
--- a/src/main/java/org/bukkit/command/PluginCommand.java
+++ b/src/main/java/org/bukkit/command/PluginCommand.java
@@ -150,6 +150,7 @@ public final class PluginCommand extends Command implements PluginIdentifiableCo
         }
 
         if (completions == null) {
+            if (!sender.getServer().suggestPlayerNamesWhenNullTabCompletions()) return com.google.common.collect.ImmutableList.of(); // Paper - allow preventing player name suggestions by default
             return super.tabComplete(sender, alias, args);
         }
         return completions;
-- 
2.21.0