From c458c793d55df76e88de9f43d7de93b95e2ea34a Mon Sep 17 00:00:00 2001
From: miyuchina <miyu.china@icloud.com>
Date: Mon, 8 Jan 2018 20:54:55 -0600
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=8E=20FileWrapper.peek=20returns=20Non?=
 =?UTF-8?q?e=20when=20out=20of=20elements?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 mistletoe/block_token.py     | 9 ++++-----
 mistletoe/block_tokenizer.py | 2 +-
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/mistletoe/block_token.py b/mistletoe/block_token.py
index 4d17ff0a..854c2c8e 100644
--- a/mistletoe/block_token.py
+++ b/mistletoe/block_token.py
@@ -431,11 +431,10 @@ def start(cls, line):
     @classmethod
     def read(cls, lines):
         line_buffer = []
-        try:
-            while cls._is_legal(lines.peek()) and lines.peek() != '\n':
-                line_buffer.append(next(lines))
-        except StopIteration:
-            pass
+        while (lines.peek() is not None
+                and cls._is_legal(lines.peek())
+                and lines.peek() != '\n'):
+            line_buffer.append(next(lines))
         return line_buffer
 
 
diff --git a/mistletoe/block_tokenizer.py b/mistletoe/block_tokenizer.py
index c8ddf9ae..68d64247 100644
--- a/mistletoe/block_tokenizer.py
+++ b/mistletoe/block_tokenizer.py
@@ -36,7 +36,7 @@ def reset(self):
     def peek(self):
         if self._index + 1 < len(self.lines):
             return self.lines[self._index+1]
-        raise StopIteration
+        return None
 
 
 def tokenize(iterable, token_types, root=None):