I need a function to add all the tags under a tag namespace to the tag list.
That is, when I have a ns1:tag1, ns1:tag2, …, ns1:tagN, I can use
to show all the pages with the tag under the namespace ns1. It is quite useful because sometimes I just want to show the pages with a sub tag, but sometimes I want to show all the pages with these tags on a main page. Since the tags under ns1 may be added in the future, I do not need to change the main page code to add more tags.
Now the tag cannot be managed by namespace, the tag namespace seems useless, I hope the basic function can be added.