* eval.c (expand_op): Fix broken do operator. In the case of the do

operator, we must feed the entire form to the expander, not the
individual forms.  That is to say (do operator arg) must expand the
form (operator arg), whereas (op fun arg) just expands the forms fun
and arg individually.

1 files changed, 1 insertions, 1 deletions

diff --git a/eval.c b/eval.c
index 142776fa..1d8c5ce4 100644
--- a/eval.c
+++ b/eval.c
@@ -1648,7 +1648,7 @@ static val supplement_op_syms(val ssyms, val max)
 
 static val expand_op(val sym, val body)
 {
-  val body_ex = expand_forms(body);
+  val body_ex = if3(sym == op_s, expand_forms(body), expand(body));
   val rest_gensym = gensym(lit("rest-"));
   cons_bind (syms, body_trans, transform_op(body_ex, nil, rest_gensym));
   val ssyms = sort(syms, func_n2(lt), car_f);