diff --git a/app/helpers/pull_requests_helper.rb b/app/helpers/pull_requests_helper.rb
index c89a3be0f..983ab848c 100644
--- a/app/helpers/pull_requests_helper.rb
+++ b/app/helpers/pull_requests_helper.rb
@@ -2,12 +2,12 @@ module PullRequestsHelper
 
   # 获取diff内容行号
   def diff_line_num content
-    content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.nil? ? "" : content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.join("").to_i
+    result = content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.nil? ? "" : content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.join("").to_i
   end
 
   # 处理内容
   def diff_content content
-    content.gsub!(/.*@@ -\d+,\d+ \+\d+,\d+ @@\n/m,'')
+    result = content.gsub!(/.*@@.*@@\n/m,'')
   end
 
   def get_user_name user_id