From dcd782940e7ba1c355f824fa07f09adb2df9042c Mon Sep 17 00:00:00 2001
From: 1160300420 <906135558@qq.com>
Date: Sun, 22 Jul 2018 18:21:35 +0800
Subject: [PATCH] change

change
---
 .../org/jabref/logic/bibtexkeypattern/BracketedPattern.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/org/jabref/logic/bibtexkeypattern/BracketedPattern.java b/src/main/java/org/jabref/logic/bibtexkeypattern/BracketedPattern.java
index e245e5b4431..e993f7db30c 100644
--- a/src/main/java/org/jabref/logic/bibtexkeypattern/BracketedPattern.java
+++ b/src/main/java/org/jabref/logic/bibtexkeypattern/BracketedPattern.java
@@ -570,7 +570,7 @@ public static String firstAuthor(String authorField) {
         if (authorList.isEmpty()) {
             return "";
         }
-        if (authorList.getAuthor(0).getVon().toString().equals("Optional.empty")) {
+        if (!authorList.getAuthor(0).getVon().isPresent()) {
             Character.UnicodeBlock ub = Character.UnicodeBlock.of(authorList.getAuthor(0).getLast().orElse("").charAt(0));
             if ((ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS)
                 || (ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS)