Reported on IRC:

using /msg *status znc_help gives a tiny error msg. i think the pattern matched
for /msg needs to change to support *status

It appears that we don't match on '*' for the nickname in /msg

pub(crate) fn is_nick_first_char(c: char) -> bool {
    c.is_alphabetic() || "[]\\`_^{|}".contains(c)
}