On Tue, Sep 08, 2020 at 07:51:59PM -0700, Stefan Kangas wrote:

[...]

> I don't see how the "don't break userspace" maxim of Linux kernel
> development could be applied to Emacs in any meaningful way.

But it is: Changes to core are done with consideration towards
users "out there", there is a deprecation mechanism, etc.

"Don't break users" is, I think, common to both. The colours may
vary :)

> We deal in Lisp, not ABI:s.

An interface is an interface is an interface :)

Sure, Lisp gives the user side more leverage than an ABI, which
is in resonance with the GNU philosophy.

Cheers
 - t