Demonstrating cw bug
@dog @_@ Look what shows up in the preview!
Looks like this was closed as a WONTFIX in December: https://github.com/tootsuite/mastodon/issues/354 But I wonder if there's another way around this. Is @username@ actually a valid format? Is it still considered a feature, not a bug, to have a semi-qualified username with an @ but no domain?