From e9d72df890864a364cca30c82337c80647dab17e Mon Sep 17 00:00:00 2001
From: Luck <git@lucko.me>
Date: Sat, 25 Jan 2020 12:25:00 +0000
Subject: [PATCH] Check for an empty buffer in async tab complete handler
 (#1949)

---
 .../me/lucko/luckperms/bukkit/BukkitAsyncCommandExecutor.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitAsyncCommandExecutor.java b/bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitAsyncCommandExecutor.java
index 474ceb012..327d1475c 100644
--- a/bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitAsyncCommandExecutor.java
+++ b/bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitAsyncCommandExecutor.java
@@ -54,6 +54,10 @@ public class BukkitAsyncCommandExecutor extends BukkitCommandExecutor implements
         }
 
         String buffer = e.getBuffer();
+        if (buffer.isEmpty()) {
+            return;
+        }
+
         if (buffer.charAt(0) == '/') {
             buffer = buffer.substring(1);
         }