From 3775f1862101312742bf5d5c4eef391294a8ed55 Mon Sep 17 00:00:00 2001
From: Bastian Kleineidam <calvin@debian.org>
Date: Sun, 3 Oct 2010 17:58:56 +0200
Subject: [PATCH] Fix Linkchecker URL list detection.

---
 linkcheck/fileutil.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/linkcheck/fileutil.py b/linkcheck/fileutil.py
index 297aa6c0..3784c523 100644
--- a/linkcheck/fileutil.py
+++ b/linkcheck/fileutil.py
@@ -190,7 +190,8 @@ def guess_mimetype (filename, read=None):
     """Return MIME type of file, or 'application/octet-stream' if it could
     not be determined."""
     mime, encoding = mimedb.guess_type(filename, strict=False)
-    if not mime and read is not None:
+    # Mime type text/plain can be differentiated further with content reading.
+    if (mime == "text/plain" or not mime) and read is not None:
         # try to read some content and do a poor man's file(1)
         # XXX replace with file(1) on Unix systems
         try: