fix CompletionAdaptor index out of bounds when the token is empty (a…

…libaba#610)
gorden5566 · Mar 30, 2019 · b265f5b · b265f5b
1 parent 6af9393
commit b265f5b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/core/src/main/java/com/taobao/arthas/core/shell/term/impl/CompletionAdaptor.java b/core/src/main/java/com/taobao/arthas/core/shell/term/impl/CompletionAdaptor.java
@@ -43,7 +43,7 @@ public List<CliToken> lineTokens() {
 
     @Override
     public void complete(List<String> candidates) {
-        String lastToken = tokens.get(tokens.size() - 1).value();
+        String lastToken = tokens.isEmpty() ? null : tokens.get(tokens.size() - 1).value();
         if(StringUtils.isBlank(lastToken)) {
             lastToken = "";
         }