- for (SCM s = n; scm_is_pair (s); s = scm_cdr (s))
- if (scm_to_int (scm_cdar (s)))
- accs = scm_cons (scm_car (s), accs);
-
+ if (scm_is_pair (alist))
+ {
+ bool warn = false;
+ for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
+ if (ly_scm2rational (scm_cdar (s)))
+ {
+ warn = true;
+ accs = scm_cons (scm_car (s), accs);
+ }
+
+ if (warn)
+ r->origin ()->warning ("No ordering for key signature alterations");
+ }
+