if (b.y ().length () < blotdiameter)
blotdiameter = b.y ().length ();
+ if (b.x ().is_empty () || b.y ().is_empty ())
+ return Stencil (b, SCM_EOL);
+
SCM at = (scm_list_n (ly_symbol2scm ("round-filled-box"),
scm_from_double (-b[X_AXIS][LEFT]),
scm_from_double (b[X_AXIS][RIGHT]),