I am working on applying this again. I am changing '.' as the magic
token to '@current_user' I think this is more descriptive.

As '@current_user' is not a valid email address (which are sometimes used as usernames)
and regular usernames are unlikely to start with an @ I think this is safe. If there is
a user who is named that, searching for this name will not work for any user except
'@current_user'. In that case, they will have to change their name.

I have this working for Link type, but not multilink.

committed Link search enhancement in:  changeset:   7936:a9b136565838

I'll open a new issue to extend this to MultiLinks. Maybe we can get a fix landed in < 10
years 8-).