walker does not expand outer symbol-macrolets

[Christophe Rhodes]

 affects sbcl
 status confirmed
 importance low
 tag walker symbol-macrolet sb-cltl2
 done

The walker (and things which use it) do not correctly expand "native"
local symbol macros. For example

  (require :sb-cltl2)
  (symbol-macrolet ((x y))
    (macrolet ((z (form &environment env)
                 `',(sb-cltl2:macroexpand-all form env)))
      (z (+ x x))))

should return (+ y y) but returns (+ x x) instead.