:r or :a remove :initarg from resulting macroexpansion

[svetlyak40wt]

Here is a quick check.

By default, both :ACCESSOR and :INITARG are added to the output:

CL-USER> (defclass-std::process-slots '((name)) 'user)
((NAME :ACCESSOR NAME :INITARG :NAME :INITFORM NIL))

But if I want to change :ACCESSOR to :READER, :INITARG disappears:

CL-USER> (defclass-std::process-slots '((name :r)) 'user)
((NAME :READER NAME :INITFORM NIL))

[svetlyak40wt]

Oh, I see, this is a documented behavior. But still, it is not obvious to me, why presence of :a, :r or :w should remove default :i.