From 8f5a552e7757908944935f699387acfe318c4357 Mon Sep 17 00:00:00 2001
From: Xiao YiFang <yifang.xiao@gmail.com>
Date: Tue, 28 Jun 2022 20:47:38 +0800
Subject: [PATCH] work around to fix too long headword in dsl

---
 dsl_details.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dsl_details.cc b/dsl_details.cc
index 465309ac..965ce1c6 100644
--- a/dsl_details.cc
+++ b/dsl_details.cc
@@ -1151,6 +1151,11 @@ void processUnsortedParts( wstring & str, bool strip )
 void expandOptionalParts( wstring & str, list< wstring > * result,
                           size_t x, bool inside_recurse )
 {
+  // if str is too long ,it can never be headwords.
+  if( str.size() > 100 )
+  {
+    return;
+  }
   list< wstring > expanded;
   list< wstring > * headwords;
   headwords = inside_recurse ? result : &expanded;