Low priority and not really a "bug", but there's a couple error/warning 
messages floating around that aren't really useful (and/or possibly 
misleading). I don't think they warrant a bug report, but I'm not sure where 
I would report them so that someone can think about them.

The one that triggered this post (and has been around for a metric 
forever[*]) is this one:
      Parse Warning: Suspicious expression after rgb.

which I get whenever I do something like this:

     color rgb CHSV2RGB(<n*2,.85,.7>)

Now CHSV2RGB isn't a built-in (it's in colors.inc) - but does that alone 
make it "suspicious"? And of course I use it mostly when I have something 
algorithmic (place a lot of objects in a circle, say, and color them by 
angle). So this error message tends to arise in large quantities, that can 
obscure other (legitimate) warnings.





([*] a metric forever is about 20% longer than an imperial forever)

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