inheritance_diagram should support linking via intersphinx

[shimizukawa]

Currently, the inheritance_diagram extension sets navigation links for the nodes of classes in the current project, but not for classes that are resolvable through intersphinx. It would be nice if it did.

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• Bitbucket: https://bitbucket.org/birkenfeld/sphinx/issue/865
• Originally reported by: Piet Delport
• Originally created at: 2012-01-29T05:19:17.060

[shimizukawa]

From Christoph Reiter on 2014-04-12 22:13:31+00:00

I've investigated this a bit. The cause is that intersphinx creates nodes with a reftitle "(in Project v1.42)" but inheritance_diagram expected the retitle to be the target/class name.

#!python
# in intersphinx.missing_reference()
 newnode = nodes.reference('', '', internal=False, refuri=uri,
                   reftitle=_('(in %s v%s)') % (proj, version))

Not sure what the correct fix here is. I've worked around the problem in inheritance_diagram in the mean time by extracting the target name from the url and not from reftitle.

#!python

 # in inheritance_diagram.html_visit_inheritance_diagram()
    urls = {}
    for child in node:
        url = child.get('refuri') or '#' + child['refid']
        fullname = child.get('refid') or child['refuri'].rsplit('#', 1)[-1]
        urls[fullname] = url

[NMertsch]

Hi, are there any updates on this? Your suggested code change still fixes this issue, thank you for that! Would be great to have this by default.