Hi, no sorry, I'm not active on Reddit. I don't have backend access here either, so wouldn't be able help out if something went wrong.

I asked in that issue whether Lemmy finds community via to/cc (it does). Does PieFed do the same?

Yes - PieFed does the same. It looks in 'audience', then 'cc', then 'to'. It has to, to support all the platforms that haven't adopted 'audience. It's a convenient field, but PieFed won't be affected if Lemmy goes through with removing it.

Would this also open up the possibility of a topic/context being part of multiple audiences/communities?

Not at present. If you do something like cc: [community1, community2] it will only go to community1 (on both Lemmy and PieFed). There's so many activities that are effectively duplicates, both in normal operation and when platforms are bugged (both Lemmy and Mastodon have gone through phases of sending the same activity multiple times), that you need a way to make sure you're only processing one. On PieFed, this is done by having a UNIQUE constraint of the 'ap_id' column of the Post table (the ap_id of your post is https://community.nodebb.org/post/103806), so it means you can't have the same post in more than one community.

More so 'other Fediverse socials'.

Here's an example on PieFed, that's a PixelFed user tagging their photos with 'dailyphoto' and then sharing via a.gup.pe on Mastodon: https://piefed.social/tag/dailyphoto

Lemmy has mangled that script a bit.

Where it says '%24%7Bpage%7D', it should a dollar sign, an open curly bracket, the word 'page', then a close curly bracket.

It displays a bit better at the source (click the multi-coloured fedi-link thing).

The only way I can think of is to use the API to get all communities, and then filter out the ones without local subs. So a basic BASH script would be:

#!/bin/bash echo -n '' > /tmp/allcomms.txt page=1 while true do communities=$(curl --request GET --url "https://walledgarden.xyz/api/v3/community/list?type_=All&page=${page}&limit=50" --header 'accept: application/json' | jq .communities[]) if [ "${communities}" == "" ] then break fi jq -r '[.community.id, .counts.subscribers_local] | @sh' <<<$communities >> /tmp/allcomms.txt page=$(( page + 1 )) sleep .5 done while read id count do if [ $count -eq 0 ] then echo "$id has no local subs" fi done < /tmp/allcomms.txt

(It'll take a few minutes to run)

After that, how you purge the communities with those IDs I'm less sure of. My guess would be:

Get a login tokin:
JWT=$(curl --request POST --url https://walledgarden.xyz/api/v3/user/login --header 'accept: application/json' --header 'content-type: application/json' --data '{"username_or_email": "YOUR_USERNAME","password": "YOUR_PASSWORD"}' | jq -r .jwt)

Use Admin/Purge from the API:

curl --request POST --url https://walledgarden.xyz/api/v3/admin/purge/community --header "authorization: Bearer $JWT" --header 'content-type: application/json' --data "{"community_id": ${id}, "reason": "no local subs"}"

As long as purge lets the community be recreated again (which it should do), then that should be okay.

Don't take my word for any of this for an in-production Lemmy server, though. Test first!

Whatever the views are about MBFC, Tesseract integrated it better than LW's bot. If you don't like MBFC, it's just an option in your user settings to turn it off for Tesseract, whereas the bot caused a bunch of problems that weren't even related to concerns about accuracy and bias. Drive-by bots can be annoying, because it leads people to believe there's legit content where there isn't, and not every client respected LW's bot use of spoiler Markdown, so they ended up with a massive comment from it that dominated the screen.

That's what they're doing though, isn't it? They have an account on Friendica, and they've used it to make a post within a Lemmy community (the community being [email protected] in this case).

I saw a post recently that was from Friendica to Lemmy: https://libranet.de/display/0b6b25a8-2267-afe6-6e6e-34b123429965 was to https://beehaw.org/post/18472167

Maybe you can copy whatever they did (or ask them).

For Season 1. (Season 2 has different credits.)