It was rather a bug that enabled this, not a feature, so thus closing it as won't fix.
Sorry. ** Changed in: irssi (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/380948 Title: "/upgrade screen irssi" doesn't work anymore -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs