Actually, it fails because
signal-event email-update
or expand-template /etc/mail/spamassassin/local.cf
eats some {} form the regeps:
this in a custom template:
rawbody OWLYANDSOON /\bhttp:\/\/\w{1,3}\.\w{1,3}\/[a-zA-Z0-9]{1,11}\b/
is garbled to this:
rawbody OWLYANDSOON /\bhttp:\/\/\w3\.\w3\/[a-zA-Z0-9]11\b/
bug?