Self-closing title not reported as an error when validating EPUB 3.2 #1093
Description
Given
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<title/>
</head>
<body>
</body>
</html>
validator.nu (XHTML preset) reports an error:
Error: Element title must not be empty.
From line 6, column 1; to line 6, column 8
">↩<head>↩<title/>↩</hea
But epubcheck 4.2.2 doesn’t.
Reduced test case:
selfclosingtitle.zip