category_name query fails on category assigned parent category

[Kafkaesqui]

A query type of category_name is causing a 404 error for any category assigned to a parent. Setting category to no parent corrects this. This only appears to occur on IIS server. I cannot duplicate the issue elsewhere (i.e. on Apache).

Same problem reported by another user (with query_posts - category parent issue unverified at time of ticket submission):

 http://wordpress.org/support/topic/53272

Try with the full category hierarchy. "parent-cat/sub-cat" We should fallback to matching on just the subcat if the entire hierarchy does not match, but evidently that isn't working.

Using category_name=parent-cat/sub-cat worked. I agree about the fallback, but at least there's a workaround.

Here's a patch for the workaround. Don't know how many bugs it'll cause, though.

Tentatively giving it bg|commit. If this breaks things don't tell anyone I wrote the patch ;)

(In [3385]) Fallback to matching the leaf category if the full path doesn't match. Props David House. fixes #2161

Milestone 2.0.1 deleted