From 54ae615730ef3e9297bdfb2a09d7194491ed70aa Mon Sep 17 00:00:00 2001
From: Ethan Dalool <ethan@voussoir.net>
Date: Mon, 5 Aug 2019 17:54:37 -0700
Subject: [PATCH] Set default book language to be undetermined (und).

Per rfc5646, omitting is preferred where permitted, but in Epub
that's not permitted!
---
 epubfile.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/epubfile.py b/epubfile.py
index 75d970f..00312ba 100644
--- a/epubfile.py
+++ b/epubfile.py
@@ -68,6 +68,7 @@ OPF_TEMPLATE = '''
     <dc:creator id="cre">author</dc:creator>
     <meta scheme="marc:relators" refines="#cre" property="role">aut</meta>
     <dc:title>title</dc:title>
+    <dc:language>und</dc:language>
   </metadata>
   <manifest>
     <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>