From a433c88166e72cd886a2121933a89527927f4ea3 Mon Sep 17 00:00:00 2001
From: Keke Yi <40977455+yikeke@users.noreply.github.com>
Date: Fri, 4 Sep 2020 16:32:03 +0800
Subject: [PATCH] fix index out of range error

---
 scripts/check-tags.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/check-tags.py b/scripts/check-tags.py
index 6da81f6827d6..1cc1fe79b28c 100644
--- a/scripts/check-tags.py
+++ b/scripts/check-tags.py
@@ -79,8 +79,11 @@ def filter_frontmatter(content):
             meta_pos = i.span()[1]
             collect.append(meta_pos)
 
-        filter_point = collect[1]
-        content = content[filter_point:]
+        # if the number of "---" >= 2
+        if len(collect) >= 2:
+            filter_point = collect[1]
+            content = content[filter_point:]
+            
     return content
 
 def filter_backticks(content, filename):