+static void
+print_box(const struct eqn_box *ep, int indent)
+{
+ int i;
+ const char *t;
+
+ if (NULL == ep)
+ return;
+ for (i = 0; i < indent; i++)
+ putchar('\t');
+
+ t = NULL;
+ switch (ep->type) {
+ case (EQN_ROOT):
+ t = "eqn-root";
+ break;
+ case (EQN_LIST):
+ t = "eqn-list";
+ break;
+ case (EQN_SUBEXPR):
+ t = "eqn-expr";
+ break;
+ case (EQN_TEXT):
+ t = "eqn-text";
+ break;
+ case (EQN_MATRIX):
+ t = "eqn-matrix";
+ break;
+ }
+
+ assert(t);
+ printf("%s(%d, %d, %d, %d, %d, \"%s\", \"%s\") %s\n",
+ t, EQN_DEFSIZE == ep->size ? 0 : ep->size,
+ ep->pos, ep->font, ep->mark, ep->pile,
+ ep->left ? ep->left : "",
+ ep->right ? ep->right : "",
+ ep->text ? ep->text : "");
+
+ print_box(ep->first, indent + 1);
+ print_box(ep->next, indent);
+}
+