Toqozz
Run script on notification receive
It could be handy to have a script being called for each new notification. This would allow to format notification bodies that contain more than plain text (like HTML).
I like the idea of this. Just trying to figure out how to implement it while introducing as little bloat as possible.
Something to consider is that I think Wired can already sort of do this using the print_to_file config option. You could read notification as they come in, and adjust and then send a new notification replacing the existing one using notify-call and using the ID.
I agree that this could be a lot more pleasant to do though, and it doesn't help that notify-send doesn't natively support replacing.
Replacing could be an option, although less elegant than pre-processing the notification with a hook. It all depends on how much work this takes to implement.
This is only roughly related, but I just noticed that Wired mistakenly has the body-markup capability. I've removed it now which should inform programs not to send markup.
We still want to do the script thing eventually, but this might fix your intermediary issue.