On Wed, Oct 12, 2016 at 12:20:39PM -0400, Leo Famulari wrote:
> I don't know the relationship between GNU Ghostscript and "upstream"
> Ghostscript. Can anyone explain why GNU offers its own distribution?

Some history here:
https://en.wikipedia.org/wiki/Ghostscript#History

Hopefully the upstream patches will apply to our source code.