@Gargron I never understood underscore filtering either (but that's not the issue in this thread). But then again #Gmail ignores (at least) dots in their usernames, so there's obviously some sort of use to it (less confusion for example: a_____b vs a____b <- who is who?).
@thefaico Subscribing shouldn't be an issue. Mentioning should probably cause collision confusion though. If this is an actual problem I wouldn't mind making sure it works. Haven't heard anything about this from the real world use though.
^- @realramnit Apparently I could use the nickname but not the full ID, probably not even @choller (though that depends on in which order the normalisation goes, which I don't remember off-hand)
@realramnit Ok, I could use the proper @a__b@example.com but not the shorter @ab@example.com
So this is more of a user confusion scenario than a technical difficulty. The most confusion part was that my autocomplete suggested to use an invalid identifier.
@espectalll @realramnit I haven't tried using the "Remote follow" link on a #Mastodon instance yet, no. But that's just a redirect to /main/ostatussub which works great. I just subscribed to @ekaitzzarraga for example.
@espectalll Yes, remote subscription form. What I saw that was the error in some screenshot you had was that the 'acct:' part was included, which makes the lookup fail. Without it, it works even with underscores.
If it for some reason still doesn't work for you, maybe it's because you're on #quitter.se and because @hannes2peer unfortunately has to work to gather capitailst money to pay for crappy capitalist stuff in a crappy capitalist society I think it drains energy from maintaining stuff too often (is my projected interpretation).
@realramnit Yes, which is confusing because if you do the whole nick + URL it will do the same lookup as /main/ostatussub which will fail if it's not properly formatted (with underscores). Clearly a !GNUsocial bug.