bug#30039: 26.0.90; [26.1] Making my code warning free is impossible with when-let

[Noam Postavsky]

On Wed, Jan 10, 2018 at 5:05 PM, Eric Abrahamsen
<eric@ericabrahamsen.net> wrote:
> I've encountered no other
> functions where the introduction-deprecation-removal cycle has been so
> tight that I have to choose between compiler warnings on the one hand,
> or multiple users running an Emacs without the function, on the other.

Isn't it standard Emacs practice to mark a function deprecated in the
same commit which introduces the replacement? Examples:

[1: 6f1dea5]: 2017-10-18 18:43:44 -0700
  Spelling fixes
  
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=6f1dea5c74057707bf367f863a8be5750bbb6094

[2: 91932ff]: 2017-02-23 22:39:53 -0500
  Use cl-print for Edebug and EIEIO
  
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=91932fff1ded8ed3b4d39dd06891f26960153b9e

[3: 3db521c]: 2016-06-07 21:34:51 -0400
  Reduce allout.el's pollution of the namespace.
  
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=3db521ccaf3a5b6892bf23ea1305c7cfe9aa1cce