Comment 2 for bug 1611172

Hi He Qing! Thanks for reporting the issue. The same problem with some comments has been submitted here: https://bugs.launchpad.net/anchor/+bug/1592489

Could you have a look and let me know if this would solve your problem? The patch is available at https://review.openstack.org/330334 - I never got the confirmation from the original reporter. I'll likely change the pattern to accept numbers before merging it, but as it stands now, you just need to modify the config.