Interesting, there must be a fix out there somewhere - but so far I find it rather unclear where it is included.
On Ubuntu 14.04.3 LTS with software-properties-common 0.92.37.5 it works in the requested way: => sudo apt-add-repository ppa: Cannot add PPA: 'ppa:'. Please check that the PPA name or format is correct. But on 15.10 beta2 with software-properties-common 0.96.10 it fails as described before. Need to dig through the repositories ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1405950 Title: sudo apt-add-repository ppa: results in IndexError: string index out of range To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1405950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs