copy-pprint-dispatch &optional table → new-table

table — a pprint dispatch table, or nil.

new-table — a fresh pprint dispatch table.

Creates and returns a copy of the specified table, or of the value of *print-pprint-dispatch* if no table is specified, or of the initial value of *print-pprint-dispatch* if nil is specified.

Should signal an error of type type-error if table is not a pprint dispatch table.