This bug is finally fixed in mawk 1.3.4.20200120-2 which is available in Ubuntu 20.04 LTS "Focal Fossa" and later releases. ✔️
** Changed in: mawk (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/490736 Title: mawk 1.3.3-17ubuntu2 incorrectly handles "/" in "[ ]" expressions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mawk/+bug/490736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs