Re: "fc palette frac" does not always work for objects

[sfeam <sf...@us...>]

On Monday, 26 September 2016 10:04:26 AM Petr Mikulik wrote:
> >> I suppose the routine set_plot_with_palette() could be taught to check
> >> for object colors also, but I wonder if the better question is why should
> >> we not always initialize the palette even if no one is going to use it?
> >
> > Yes, that could work. This would also automatically alleviate the
> > question of any other plot element we might have forgot that potentially
> > needs the palette but doesn't trigger it on its own.
> >
> > I wonder, though, if there are any careless assumptions about the
> > palette in the code, for example "palette is initialized => draw the
> > colorbox", or in other words, initializing it all the time might expose
> > some unwanted side effects.
> 
> There is some overhead with the palette code in terminals - they need more 
> init data (sending the palette, allocate more colours, write larger postscript 
> header, ...), as well as switching on the colorbox. Thus searching all objects 
> for their requirements is a prefered way.

OK. 
Can you think of any additional cases where the current checks in
set_plot_with_palette() fail to notice that a palette will be referenced?

	Ethan