EPUB output is invalid: XHTML has <u> elements.

What steps will reproduce the problem?
1. Generate EPUB output, e.g., "python downaloder.py 
http://www.fanfiction.net/s/5782108/1/ epub".
2. Test it with epubcheck or http://threepress.org/document/epub-validate/. The 
following error will sometimes appear: "ERROR: 
Harry_Potter_and_the_Methods_of_Rationality.epub/OEBPS/MTEuIE9tYWtlIEZpbGVzIDEgY
W5kIDI=.xhtml(45): unknown element "u" from namespace 
"http://www.w3.org/1999/xhtml"".

What is the expected output? What do you see instead?
The EPUB output is invalid. While it may work on some devices, it may fail on 
others.

What version of the product are you using? On what operating system?
I'm using current tip (26:54fc9b30ced5) on Python 2.6.4 (Ubuntu 9.10), plus the 
patches from issue 6, issue 7, issue 8 and issue 9 (which don't affect this 
issue, though the patch is made on top of the patch for issue 9).

Please provide any additional information below.
The EPUB standard specifies a particular subset of XHTML 1.1 which is part of 
the standard. While readers may support more modules, only the modules 
specified in the standard are guaranteed to be present.

http://www.idpf.org/doc_library/epub/OPS_2.0.1_draft.htm#Section2.2

Specifically, the "u" element--underlined text--is not included. It needs to be 
replaced with a CSS element. The "stylesheet.css" defined in constants.py 
already includes a "u" class which sets "text-decoration: underline"; 
therefore, replacing "u" elements with "span class='u'" elements retains the 
meaning in a specification-compliant fashion.

The attached patch, which is written on top of the patch for issue 9 and may 
not apply without it, makes this modification.

Original issue reported on code.google.com by adam.buc...@gmail.com on 20 Sep 2010 at 2:15

Attachments:

u-to-span.patch

JimmXinu / FanFicFare

EPUB output is invalid: XHTML has <u> elements. #10