#
# PRE: if-regex-match if-regex-error
#

#
#  This should parse
#
if (&User-Name =~ /%{User-Name}/) {
	update reply {
		Filter-Id := "filter"
	}
}

#
#  Check regexes which refer to unknown attributes
#
if (&User-Name =~ /%{What-The-Heck-Is-This-Thing}/) {	# ERROR
	update reply {
		Filter-Id := "filter"
	}
}