control.*() function semantics.This function takes the arguments of its caller (whose name should
be passed explicitly), plus any ... arguments and produces a
control list based on the standard semantics of control.*()
functions, including handling deprecated arguments, identifying
undefined arguments, and handling arguments that should be passed
through match.arg().
handle.controls(myname, ...)a list with formal arguments of the calling function.
the name of the calling function.
the ... argument of the control function, if present.
The function behaves based on the information it acquires from the calling function. Specifically,
The values of formal arguments (except ..., if present) are
taken from the environment of the calling function and stored in
the list.
If the calling function has a ... argument and defines an
old.controls variable in its environment, then it remaps the
names in ... to their new names based on old.controls. In
addition, if the value is a list with two elements, action and
message, the standard deprecation message will have message
appended to it and then be called with action().
If the calling function has a match.arg.pars in its
environment, the arguments in that list are processed through
match.arg().