add-user script confusing error: Password must not have atleast one digit.

when running add-user.sh to add an application user, and entering a weal password, got the following error:

Password :
Re-enter Password :
What roles do you want this user to belong to? (Please enter a comma separated list, or leave blank for none)[ ]:

• Error *
  JBAS015266: Password must not have atleast one digit.

I guess what it meant is password must have at least one digit.

A search showed the following files referencing this message:

./domain-management/src/main/java/org/jboss/as/domain/management/DomainManagementMessages.java

This file also contains some other typo like "atleast".