SCM tag = gh_cdr(s);
if (tag == ly_symbol2scm("markup0"))
return MARKUP_HEAD_MARKUP0;
+ if (tag == ly_symbol2scm("empty"))
+ return MARKUP_HEAD_EMPTY;
else if (tag == ly_symbol2scm ("markup0-markup1"))
return MARKUP_HEAD_MARKUP0_MARKUP1;
else if (tag == ly_symbol2scm ("markup-list0"))