Issues with embedding from RSS

Revisiting a quite old topic to thank you for the good explanation. Unfortunately, it made me understand the plugin is not likely to work for my need. I’m trying to embed a feed generated by an instance of Shaarli, but the link attribute in each entry points to a whole different domain (as Shaarli is a bookmark archive tool). I assume there is no way to use a wildcard in the path (thus allowing any incoming feed item to be directed to a particular category), correct?