Hunchentoot now determines the charset= attribute in text content type headers automatically when a handler returned a string. The content type is not touched when the handler directly writes to the stream or returns octets for Hunchentoot to send.
Please let me know if there are any problems with this change.
My code set content-type to "text/plain", but after this error occurs. As a result, sends to client 500.html with "content-type=text/plain".
Andrey