It would be helpful, particularly in light of the recent introduction of the
{{DEFAULTSORT}} magic word, if the sort key could be added to the tooltip which is
displayed when hovering over a Category link.

For example: if [[bar]] contains [[Category:Foo]], the tooltip, which currently reads
simply "Category:Foo", could read "Category:Foo|bar". If [[bar]] additionally contains
{{DEFAULTSORT:baz}} the tooltip could read instead "Category:Foo|baz".

Alternatively if [[bar]] contains [[Category:Foo|baz]], the tooltip could read
instead "Category:Foo|baz" as above.

Version: unspecified
Severity: enhancement