You made a great point. Since the original authors are the same, the fundamentals of the Emacs C core are indeed highly compiler-optimized. I hope I can come up with a way to fully understand and write about that history and relationship. (But to be honest, diving into that level of compiler history is a really hard topic to tackle!)
Thanks for the great inspiration and for taking the time to read!
I (briefly) searched for more info but this SO answer[0] implies they're quite similar. I'd be interested in understanding more. I feel like much of computer science has normalised to specific approaches that 'won' in the industry, where Lisp is an example of something interesting that largely didn't win -- with notable exceptions like HN itself! [1] :) And so hearing about uses of things like Lisp concepts in areas we might not know they're being used would be wonderful HN content.
[0] https://stackoverflow.com/questions/40799696/how-is-gcc-ir-d...