On 8/15/20 12:22 PM, Pip Cet wrote:

> I'd prefer the attached: this is probably not worth worrying
> too much about, so go with something straightforward?

Thanks for the quick review and patch. I came up with something a bit simpler 
and installed the attached.

It does bug me a bit that GCC generates bad code for 'NILP (Fequal (...))' here. 
I've been meaning to add a bool function equal (...) that would simplify the C 
source a bit and presumably let GCC do better, but that can wait.