Validation error with epubcheck

[shimizukawa]

If you insert an image like this:

#!rst

.. image:: images/Eye_of_Horus.*
      :width: 20%
      :align: center

You get this html:

#!html

<a class="reference internal image-reference" href="_images/Eye_of_Horus.svg"><div align="center" class="align-center"><img src="_images/Eye_of_Horus.svg" width="20&#37;" /></div>
</a>

Which does not validate against epubcheck:

#!bash

Validating against EPUB version 2.0
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(60,120): element "div" not allowed here; expected the element end-tag, text or element "a", "abbr", "acronym", "applet", "b", "bdo", "big", "br", "cite", "code", "del", "dfn", "em", "i", "iframe", "img", "ins", "kbd", "map", "noscript", "ns:svg", "object", "q", "samp", "script", "small", "span", "strong", "sub", "sup", "tt" or "var" (with xmlns:ns="http://www.w3.org/2000/svg")
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(60,120): attribute "align" not allowed here; expected attribute "class", "dir", "id", "lang", "style", "title" or "xml:lang"
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(60,170): element "img" missing required attribute "alt"
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(102,129): element "img" missing required attribute "alt"
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/_images/Eye_of_Horus.svg(3,132): value of attribute "version" is invalid; must be equal to "1.1"
ERROR: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(60,79): hyperlink to non-standard resource '_images/Eye_of_Horus.svg' of type 'image/svg+xml'
WARNING: /home/juh/Projekte/Literatur/sphinx-handbuch/_build/epub/Sphinx.epub/abbildungen.html(60,79): hyperlink to resource outside spine '_images/Eye_of_Horus.svg'

---

• Bitbucket: https://bitbucket.org/birkenfeld/sphinx/issue/1376
• Originally reported by: Jan Ulrich Hasecke
• Originally created at: 2014-02-04T12:34:18.248

[juh2]

This is a severe bug, as Google Play does not accept the epub.

[juh2]

Please check epub converted with Sphinx 1.3 There are a lot of errors.

[shimizukawa]

In fact, sphinx can't generate XHTML. For now, it's a limitation.

In near future, docutils supports XHTML writer, after that we can improve our epub bulider.
https://groups.google.com/d/msg/sphinx-dev/qeaq7RV8ccw/AlCa7k4cgDcJ

[mgifford]

Not sure if we should close this issue and move to this other one:
#2371

[shibukawa]

#3464 fix almost all errors except the following ones:

ERROR (RSC-005) at "a.epub/index.xhtml" (line 21, col 42):
   Error while parsing file 'attribute "align" not allowed here

ERROR (RSC-005) at "a.epub/index.xhtml" (line 21, col 107):
   Error while parsing file 'value of attribute 'width' is invalid; must be an integer'.

[shibukawa]

I confirmed current master branch (#3464) fix this issue. This fix will be released with 1.6.