gv-define-expander

gv-define-expander is an autoloaded Lisp macro in `gv.el'.

(gv-define-expander NAME HANDLER)

Use HANDLER to handle NAME as a generalized var.
NAME is a symbol: the name of a function, macro, or special form.
HANDLER is a function which takes an argument DO followed by the same
arguments as NAME. DO is a function as defined in `gv-get'.