Can I get tag-specific RSS feeds for a public stream ?

I’d like to access RSS feeds of specific tags, is that possible in Diaspora ? For example:

https://joindiaspora.com/tags/android+htc.atom

… for all public posts with “android” and “htc' tags

or

https://joindiaspora.com/u/johnw/tags/android+htc.atom

… for all public posts by “johnw” with “android” and “htc' tags

Thanks for any information about this.