5.2. Setf Expansions [sec_5-1-1-2]

(GET-SETF-EXPANSION form &OPTIONAL environment), (EXT:GET-SETF-METHOD form &OPTIONAL environment), and (EXT:GET-SETF-METHOD-MULTIPLE-VALUE form &OPTIONAL environment) receive as optional argument environment the environment necessary for macro expansions. In DEFINE-SETF-EXPANDER and EXT:DEFINE-SETF-METHOD lambda lists, one can specify &ENVIRONMENT and a variable, which will be bound to the environment. This environment should be passed to all calls of GET-SETF-EXPANSION, EXT:GET-SETF-METHOD and EXT:GET-SETF-METHOD-MULTIPLE-VALUE. If this is done, even local macros will be interpreted as places correctly.

These notes document CLISP version 2.49Last modified: 2010-07-07