the_archive_title and the_archive_description should return multiple terms

[thomask]

For some time it is possible to use multiple taxonomies in URL to create intersection or join, so
example.com/tag/term_1+term_2 return posts with both terms (AND)
example.com/tag/term_1,term_2 return posts with any of this term (OR)

but the_archive_title (and possible also the_archive_description) print in such cases only the first term. I think, the_archive_title should print Term 1(,|+) Term 2 and the_archive_description should probably return nothing in such cases.

[boonebgorges]

We'll need to make sure that the patch here is i18n-friendly. What do we do elsewhere when we need to assemble lists like this?

[joostdevalk]

The problem here is that we don't "really" support these queries in core. The WP_Query object only has 1 tag ID for instance when you query two tags... So that'd need fixing before you could fix this properly... My feeling is: we probably shouldn't do anything about that, but I might be wrong :)

[SergeyBiryukov]

Replying to joostdevalk:

The problem here is that we don't "really" support these queries in core.

Right, both functions rely on get_queried_object(), which can only contain one object at a time.

[michalzuber]

How we should represent it in text? With word 'or' or , (comma) if more tags are present?