Email address is invalid

[sdtbone]

Version: Security Onion 2.3.260

Issue: I have a user with an apostrophe in their email address. When I use so-user add to add the user I get Email address is invalid
Anyone know of a solution?

My attempts:
command: so-user add "john.o'[email protected]"
response: Email address is invalid

command: so-user add john.o'[email protected]
response: > (i.e. line continuation since there is a single apostrophe is waiting for closure and when I do I get invalid email)

#tried escaping...basically trying everything I can think of
command: so-user add "john.o'[email protected]"
response: Email address is invalid

so-user add 'john.o'[email protected]'
response: > (i.e. line continuation since there is a single apostrophe is waiting for closure and when I do I get invalid email)

[sdtbone]

Found the code that verifies the email address (saltstack/default/salt/common/tools/sbin/so-user)
Looks like Onion is only allowing alphanumeric in email addresses even though according to RFC 3696 apostrophes are allowed in email addresses...if used before the '@'

function validateEmail() {
  email=$1
  if [[ ! "$email" =~ ^[[:alnum:]._%+-]+@[[:alnum:].-]+\.[[:alpha:]]{2,}$ ]]; then
    fail "Email address is invalid"
  fi

  if [[ "$email" =~ [A-Z] ]]; then
    fail "Email addresses cannot contain uppercase letters"
  fi
}
```