From fb3f65cdcc8a29ebfd9815efb7009a3c2dd4041c Mon Sep 17 00:00:00 2001
From: Nick Muerdter <12112+GUI@users.noreply.github.com>
Date: Fri, 31 May 2019 18:52:57 -0600
Subject: [PATCH] Fix CSV output containing increasing number of null byte
 characters.

The CSV buffer is being truncated on each new row, but since the
stream's pointer isn't also being reset, each new row starts at the same
position as the previous row, but with null bytes up until that point.
This leads to increasing growth in the length of each CSV row, since
each line will be padded with null bytes equivalent to the previous
row's length.
---
 linkcheck/logger/csvlog.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/linkcheck/logger/csvlog.py b/linkcheck/logger/csvlog.py
index 21ec9528..d91a13d4 100644
--- a/linkcheck/logger/csvlog.py
+++ b/linkcheck/logger/csvlog.py
@@ -128,6 +128,7 @@ class CSVLogger (_Logger):
         # ... and write to the target stream
         self.write(data)
         # empty queue
+        self.queue.seek(0)
         self.queue.truncate(0)
 
     def end_output (self, **kwargs):