Use backreferences in container names

[madduck]

trafficstars

I am trying to isolate all the various Slack workspaces I'm being forced to use. Unfortunately, they all redirect to the same domain (app.slack.com), and so I was wondering if it couldn't be possible to do something like

@https?:\/\/app\.slack\.com/client/([^/]+)/ , Slack-$1

i.e. use a backreference to name the container to be used?

[LoveIsGrief]

Sounds reasonable. I'm swamped with other projects, but it'd be nice if someone had a stab at this.