[issue4252] some missing links in html help index pane

[Hirokazu Yamamoto]

Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:

This describes second bug.

When multiple target was bound to same keyword, only first target could
be browsed.

In index_on_firefox.png, we can see "operator, [1], [2]". This [?] means
multiple targets are linked to same keyword and we can browse each
target in firefox. But from htmlhelp, we can only browse first target.

Attached patch "sphinx_multiple_targets.patch" will enable us to select
each targets in popup dialog. (They all have same title, I think it's
useless though)

Please apply this patch after applied sphinx_inactive_index_item.patch.

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title: inactive item not shown in html help index pane -> some missing links in html help index pane
Added file: http://bugs.python.org/file12024/sphinx_multiple_targets.patch

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<http://bugs.python.org/issue4252>
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