• reported by @PostholerCom (thread)
• with MapServer 8+, the former functionality of special results for LABEL (WRAP) MAXLENGTH 0 or -1 (see RFC 40) returns an error
  getInteger(): Symbol definition error. Parsing error near (-1)
  due to new checks placed in MapServer 8, to force values of MAXLENGTH to be greater than zero
• likely the check for MAXLENGTH should be removed, to re-enable the full RFC 40 functionality

(for fast local testing with MapServer 8, use the related msautotest labels-wrap.map)

Thoughts?