> Coming back to the original problem, I think this is due to a
> "misunderstanding" between pic and grotty.
More or less, yes.
> Anyhow, pic sets the fill color to black for filling the arrowheads,
> and from that point on grotty writes all text with a black
> background. The fix appears to be rather easy: let pic set the fill
> color not to black (\D'Fg 0.000'), but to "default" (\D'Fd'); this
> seems to work correctly with grops and also lets grotty write the
> text normally.
The fix is not easy, unfortunately. Arrow heads are always filled
with the outline colour, which is black. `pic' thus has to change the
fill colour accordingly. I can't imagine any way to make that work
automatically work with TTYs.
I see various solutions.
1. Set pic's `arrowhead' style variable to 0 so that arrowheads
aren't filled. It's probably worth to handle this with a new
command line option for `pic', similar to option -n (which does
more than that).
2. Undo an optimization within pic which currently assumes that fill
and glyph colours are completely independent. This would mean
that after a filled object the fill colour is immediately reset
to the default.
3. Say `.color 0' before and `.color 1' after the image. [This is
the first time I see a useful application of this request which
I've introduced a long time ago :-)]
Comments, please.
Werner
