sphinx.ext.graphviz: missing support for :class: option

[lpirl]

In Hieroglyph – a Sphinx extension to build slides/presentations – I want to apply a (CSS) class to an included dot graph.
From looking at the docs and code of sphinx.ext.graphviz, it looks as if the directives provided by sphinx.ext.graphviz don't support the :class: option.

For this specific use – but probably as well for countless extensions and tools which build on Sphinx – it would be useful if the directives provided by sphinx.ext.graphviz would support the :class: option. Especially because the :class: option belongs to the common options of the reStructuredText directives.
It would allow users to format included graphs just as images, blocks, etc.

Alternatively, one could probably wrap the included graph in a container but that is a bit cumbersome. Just imagine every element for which a class should apply would have to be wrapped in a container…

Cheers. :)

[tk0miya]

Fixed by #6967
Thank you for reporting.

[lpirl]

Whoop. What an unusual quick fix. :) Awesome. Cheers.