objc:selector-name

(objc:selector-name selector)

The name of a selector; a string is answered as it is, unregistered. Part of the macOS-only objc package -- the interpreter (java -jar, or the rontolisp native binary), a compiled .class / .jar and a --native executable for macOS on Apple silicon, never a .wasm; on a machine without the runtime it signals an error. See the macOS GUI guide.

CL-USER> (objc:selector-name (objc:coerce-to-selector "setWidth:height:"))
"setWidth:height:"