+ if (head == ly_symbol2scm ("combine-stencil"))
+ {
+ SCM out = SCM_EOL;
+ SCM *tail = &out;
+
+ for (SCM x = scm_cdr (expr); scm_is_pair (x); x = scm_cdr (x))
+ {
+ SCM footnote = get_footnotes (scm_car (x));
+ if (scm_is_pair (footnote))
+ {
+ for (SCM y = footnote; scm_is_pair (y); y = scm_cdr (y))
+ {
+ *tail = scm_cons (scm_car (y), SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ }
+ }
+ else if (SCM_EOL != footnote)
+ {
+ *tail = scm_cons (footnote, SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ }
+ }
+ return out;
+ }
+ if (head == ly_symbol2scm ("translate-stencil"))
+ return get_footnotes (scm_caddr (expr));