[urlpublishing] handle sub-types in RestPathEvaluator
Since commit 31a1813d53f3 "[entity/url publishing] fetch_rqlst should
use 'is_instance_of' instead of 'is'", the RestPathEvaluator's input
rset can have more than one etype, so it can't always use sameetypelist.
Related to #3825488
.. role:: raw-html(raw)
:format: html
RSS driven
----------
RSS is a pretty useful technology that can be widely used on this
site. Any set of data can be presented as RSS. You can then plug in
an RSS reader into that and follow the site activity. For example :
:raw-html:`<p><a class="reference"
href="view?vid=rss&rql=Any+X%2CM+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30"><img
alt="rss" src="data/rss.png"> latest changes</a></p>`