Glitch-soc does not support hashtags from Friendica, Hubzilla and (streams)

[JupiterRowland]

Steps to reproduce the problem

1. Have a Glitch-soc account.
2. Have an account on Friendica, a channel on Hubzilla or a channel on (streams).
3. If you're on Hubzilla, "install" the ActivityPub "app" so you can connect to Glitch-soc.
4. Follow your Friendica account, your Hubzilla channel or your (streams) channel from Glitch-soc.
5. Go to Friendica, Hubzilla or (streams) and confirm the connection request.
6. Post "#Hashtag" on Friendica, Hubzilla or (streams).
7. Wait for the post to arrive in your Glitch-soc timeline.
8. Look at the post on Glitch-soc.

Expected behaviour

Glitch-soc renders "#Hashtag" as follows: "#" is not linked. "Hashtag" is a link to the search for the hashtag "#Hashtag" on your local Glitch-soc instance. Glitch-soc treats the link as a valid, standard hashtag. Standard vanilla Mastodon behaviour.

Actual behaviour

Glitch-soc renders "#Hashtag" as dumb text with no link and no hashtag or search link functionality at all.

Detailed description

First of all, I'm not a Glitch-soc user. I'm writing this as a Hubzilla user on behalf of another user who has noticed this bug in the way Glitch-soc renders my posts from Hubzilla. I do not know whether this user is on the Web interface or a Mastodon app. But judging by the nature of the bug, it most likely does not occur in the Web interface because as far as I know, Mastodon's HTML sanitiser is part of the backend.

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Glitch-soc does not recognise hashtags in posts from Friendica, Hubzilla and the nameless server application in the streams repository as such. Instead, its HTML sanitiser removes all code around them.

This is because hashtags on these three are different from hashtags on Twitter, Mastodon, Glitch-soc and all the other microblogging projects in the Fediverse. They have always been, and with "always", I mean since the launch of Friendica in 2010, five and a half years before Mastodon.

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A typical microblogging/Twitter/Mastodon hashtag is a working hashtag in its entirety.

| All this is hashtag and linked |
|            #Hashtag            |

#Hashtag - Notice how the whole thing is blue.

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A hashtag on Friendica, Hubzilla and (streams), however, has always looked like this: The "#" is not part of the hashtag and the link.

| This is not hashtag and linked | This is hashtag and linked |
|                               #|Hashtag                     |

#Hashtag - Notice how the "#" is black and only the "Hashtag" is blue.

Mastodon can handle this quite gracefully.

Glitch-soc, on the other hand, doesn't know that this is a hashtag. It doesn't expect hashtags that look like this. And since it doesn't understand the code, it's HTML sanitiser removes all of the code that would make this a working hashtag.

Glitch-soc only expects "#Hashtag" and turns "#Hashtag" into a dumb, non-functional "#Hashtag". Instead, it should render it as "#Hashtag" with a link to the local hashtag search and handle it as a valid hashtag.

Mastodon instance

dragonscave.space

Mastodon version

v4.3.0-alpha.5+glitch

Technical details

No response