rats don't print in the eps HID

[KaiMartin]

The EPS HID does not emit rats.

To reproduce:
1) Create a layout foobar.pcb with unresolved rats
2) try to print with the EPS HID:
    pcb -x --layer-stack "top,rats" --eps-file "/tmp/foobar.eps" foobar.pcb

There are no rats visible in foobar.eps. pcb does not complain about the rats layer.

---<)kaimartin(>---

[Traumflug (mah-jump-ing)]

Looking at the code, this appears to be intentional. See line 645 in src/draw.c:

  if (gui->gui) /* <== true only when a "real" gui is present.
    {
      /* Draw element Marks */
      ...
      /* Draw rat lines on top */
      if (gui->set_layer ("rats", SL (RATS, 0), 0))
        {

Marking as "wishlist."