Hygiene in EdgeLisp

EdgeLisp is chugging along nicely. I'll soon do a proper release.

I just implemented a variant of SRFI 72, that is a hygienic defmacro. (I wrote two articles about SRFI 72: part 1 and part 2).

(defmacro swap (x y)
 #`(let ((tmp ,x))
     (setq ,x ,y)
     (setq ,y tmp)))
nil
(defvar x 1)
1
(defvar tmp 2)
2
(swap x tmp)
1
x
2
tmp
1
(swap tmp x)
1
x
1
tmp
2