The list of categories returned by action=parse does not have any xml attributes marking those categories as hidden (when they are hidden).

http://en.wikipedia.org/w/api.php?action=parse&page=Voyager_1

Presumably this information is available at this point since asking for categorieshtml returns them sorted by hidden/non hidden.

http://en.wikipedia.org/w/api.php?action=parse&page=Voyager_1&prop=categorieshtml

I know this information is available in action=query, but it is preferable to have this information returned by action=parse along with the page so only a single query needs to be made.

Version: 1.20.x
Severity: enhancement