From 3fd801b4a186255cd68d8b3188a75210197a905c Mon Sep 17 00:00:00 2001
From: Vishesh Handa <me@vhanda.in>
Date: Wed, 29 May 2019 17:34:47 +0200
Subject: [PATCH] Fix "Value not in range: -1" error

Fixes #4
---
 lib/utils/markdown.dart | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/utils/markdown.dart b/lib/utils/markdown.dart
index 124e9d3b..7c18ed3e 100644
--- a/lib/utils/markdown.dart
+++ b/lib/utils/markdown.dart
@@ -25,7 +25,10 @@ class MarkdownBuilder implements md.NodeVisitor {
     });
 
     var str = stringBuffer.toString();
-    return str.substring(0, str.length - 1);
+    if (str.isNotEmpty) {
+      return str.substring(0, str.length - 1);
+    }
+    return str;
   }
 
   @override