4.5.14 start-doctype-decl-handler

Handler Keyword: #:start-doctype-decl-handler

Set a handler that is called at the start of a ‘DOCTYPE’ declaration, before any external or internal subset is parsed.

Handler prototype: start-doctype-decl name sysid pubid   has-internal-subset?

Arguments:

name

Declaration name.

sysid

System ID. May be #f.

pubid

Public ID. May be #f.

has-internal-subset?

#t if the ‘DOCTYPE’ declaration has an internal subset, #f otherwise.