[issue3422] sphinx.doc.autodoc: Hook for changing argspec

[Pauli Virtanen]

Pauli Virtanen <pav at iki.fi> added the comment:

Suggested patch attached. Tested on Numpy documentation.

It adds a new signal,

    autodoc-process-signature(app, what, name, obj, options,
                              signature, return_annotation)

which is assumed to return either None or a 
new (signature, return_annotation) tuple. Warnings are raised
only if introspection fails and none of the event handlers returns
a new signature.

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keywords: +patch
Added file: http://bugs.python.org/file10971/autodoc-process-signature.patch

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