From c222ab22b5d3eb617da70b7a1216819029b5299c Mon Sep 17 00:00:00 2001
From: ville rantanen <ville.rantanen@iki.fi>
Date: Tue, 12 Sep 2017 11:26:09 +0300
Subject: [PATCH] fix bug in empty markdown file

---
 reporting/markslider.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/reporting/markslider.py b/reporting/markslider.py
index c4a7007..c71b032 100755
--- a/reporting/markslider.py
+++ b/reporting/markslider.py
@@ -100,6 +100,8 @@ class slide_reader:
                 self.data.append(new_page)
             f.close()
             self.file_start_page.append(len(self.data))
+        if len(self.data)==0:
+            raise ValueError("File does not have a # header")
         self.toc()
         self.pages=len(self.data)
         self.inc_page_no(0)