Re: combining cond and let, to replace pcase.

[Eli Zaretskii <eliz@gnu.org>]

> From: Michael Heerdegen <michael_heerdegen@web.de>
> Cc: Spencer Baugh <sbaugh@janestreet.com>,  emacs-devel@gnu.org
> Date: Sun, 19 Nov 2023 12:20:20 +0100
> 
> To sum up, I question your premise of this discussion.

Don't.  It's a real issue.  Maybe not for you, but for some others.
No one in their right mind would assume that Richard has "a problem
understanding the abstract approach".  Just look at which pieces of
software he wrote and the various DSLs he designed while at that.  So
when Richard, of all the people, tells us there's a problem, I suggest
that we listen, especially since a few other veteran Emacs developers,
who are not unfamiliar with Emacs Lisp and its subtleties, tell
something similar if not identical.

It could be that pcase is not a problem for you, but that's not what
this discussion is about.  When on several occasions I told you that
some piece of documentation is clear for me, you still insisted for it
to be fixed because it wasn't clear for you, and you were right.
Because the documentation I write is not for me, it's for others.

> In my opinion `pcase' comes very close to the optimal solution for
> its task.

The same is true for regular expressions.  But we still have rx, and
some people really prefer it.  Maybe this imperfect analogy will help
you understand the issue with pcase.