bug#28625: [PROPOSED] Speed up (format "%s" STRING) and the like

[Philipp Stephani]

John Wiegley <jwiegley@gmail.com> schrieb am Do., 28. Sep. 2017 um 07:41 Uhr:

>>>>> Paul Eggert <eggert@cs.ucla.edu> writes:

> I take your point that the patch is only a minor performance improvement in
> the big picture. And although the patch does simplify the Emacs source code,
> that's minor too. (Should I propose only major changes from now on? :-)

I do appreciate the simplication, although if semantics have changed at all,
I'm against without a bigger win.

Shouldn't this at least be documented in the "Incompatible Lisp changes" section of NEWS?