From 3813ba9b082527d26b338261d0d88c3ee49ff36a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E5=BF=97=E6=AF=85?= <xuzhiyi@youzan.com>
Date: Sat, 6 Apr 2019 04:32:51 +0800
Subject: [PATCH] fix method completion (#627)

---
 .../com/taobao/arthas/core/shell/cli/CompletionUtils.java     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/src/main/java/com/taobao/arthas/core/shell/cli/CompletionUtils.java b/core/src/main/java/com/taobao/arthas/core/shell/cli/CompletionUtils.java
index 14737fa7a..efbcb63e5 100644
--- a/core/src/main/java/com/taobao/arthas/core/shell/cli/CompletionUtils.java
+++ b/core/src/main/java/com/taobao/arthas/core/shell/cli/CompletionUtils.java
@@ -200,6 +200,10 @@ public class CompletionUtils {
         List<CliToken> tokens = completion.lineTokens();
         String lastToken = completion.lineTokens().get(tokens.size() - 1).value();
 
+        if (StringUtils.isBlank(lastToken)) {
+            lastToken = "";
+        }
+
         // retrieve the class name
         String className;
         if (StringUtils.isBlank(lastToken)) {