id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
9227	in get_the_category_list(), filter categories before constructing list	KevinB	anonymous	"The template '''function get_the_category_list''' returns a concatenated string of category links for an individual post.  The only filtering available is on the full concatenated sting, via 'the_category' hook.

Since filtering the category array directly is greatly preferable for most uses, please consider adding the attached patch, or something like it.

Whatever hook is added should somehow indicate the data context - in this case for display.  In filtering post categories, there is the potential for non-display situations in which the actual post categories must be maintained even though the display filtering hides some from the current user.  What we '''should not do''' is apply a single filter inside get_the_category or wp_get_object_terms, since themes and plugins may already call those functions for multiple data contexts.

I had considered calling the new hook ''''get_the_category_for_list''''.  Instead I'm suggesting a more generic ''''get_the_category'''' hook, '''passing context''' as the second argument.  That would leave the API consistent for possible future use in filtering other contexts."	enhancement	new	normal	Future Release	Template	2.8	normal		category filter has-patch tested