Not a bug Full-form comma not banned as username


Well-known member
Not quite sure if it's a bug or not, but full-form commas (,) are currently allowed to be used as a part of a username.

Maybe ban this as well to unify?

Chris D

XenForo developer
Staff member
The main reason commas are banned is because it would break operations where a comma is used as a delimiter, e.g. conversation recipients and other "auto complete" inputs. These rely on an "explode" operation on the , character explicitly. Any other character should be ignored and not cause a problem.