replied to https://www.jvt.me/mf2/2020/02/fqgym/

I got this working here https://me.hawx.me/entry/5f00a0fc-52f3-4c5d-bc60-98ae5fba7317. It is pretty basic, I just collect any u-syndication links on the thing I'm liking/replying to and check if they match a tweet/flickr regex, like https://indieweb.org/u-syndication#How_to_use says. Also I've spotted on your blog that your syndication links probably shouldn't be marked up with u-syndication as they don't point to the tweet that was created by brid.gy.