Make autodoc abbreviate long dictionaries

[not-my-profile]

Examples in the wild:

babel.core.Locale.negotiate	searx.engines.engine_shortcuts

I think for long dictionaries it would be better if they were automatically abbreviated, or there at least should be an option to do so.

[tk0miya]

How about using autodoc_preserve_defaults? If you're using a constant for the default value, the signature will become looking better.
https://www.sphinx-doc.org/en/master/usage/extensions/autodoc.html#confval-autodoc_preserve_defaults

[not-my-profile]

Ah I think this would help only with babel.core.Locale.negotiate but not with searx.engines.engine_shortcuts, which is a documented variable?

[tk0miya]

To suppress the value of variables and attributes, please use :no-value: option to the auto* directives.

[not-my-profile]

But :no-value: cannot be used with automodule can it?

[tk0miya]

OMG, it's not unexpected behavior. I'll fix it. The :no-value: option should be passed to both automodule directive and autodoc_default_options.