cons* seems to mutate a list given to it from apply,
(define x '(1 2 (3 4)))
(apply cons* x)
x
=> (1 2 3 4)
New code not changing the rest arg:
SCM_DEFINE (scm_cons_star, "cons*", 1, 0, 1,
(SCM arg, SCM rest), "...")
#define FUNC_NAME s_scm_cons_star
{
SCM ret = SCM_EOL;
SCM *p = &ret;
SCM_VALIDATE_REST_ARGUMENT (rest);
for ( ; scm_is_pair (rest); rest = SCM_CDR (rest))
{
*p = scm_cons (arg, SCM_EOL);
p = SCM_CDRLOC (*p);
arg = SCM_CAR (rest);
}
*p = arg;
return ret;
}
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