valuesSpecializing.
values ↓value-typespec
Reviewer: Barmar: Missing &key!!!
&optional {typespec}*] [&rest typespec] [&allow-other-keys]
typespec—a type specifier.
4.5.0 14 \itemitem{\tt (values \starparam{value-type})} \itemitem{\tt (values \param{value1-type} \param{value2-type} ...)}
This type specifier can be used only as the value-type in a function type specifier or a the special form. It is used to specify individual types when multiple values are involved. The &optional and &rest markers can appear in the value-type list; they indicate the parameter list of a function that, when given to multiple-value-call along with the values, would be suitable for receiving those values.would correctly receive those values.
The symbol * may not be among the value-types.
The symbol values is not valid as a type specifier; and, specifically, it is not an abbreviation for (values).