Re: What's missing in ELisp that makes people want to use cl-lib?

[Emanuel Berg]

Alan Mackenzie wrote:

> Just take one look at this "reality" you're so supportive
> of: the widespread use of cl-lib, not just in people's own
> projects, but throughout the core of Emacs, has multiplied
> the size of Lisp language part of Emacs by a factor of
> around 3.

So say I write a function like this, which has nothing to do
with cl-lib BTW.

(defun nand (&rest conditions)
  (when (member nil conditions)
    t) )

Some would say it is consistent, since we have `not' and
`and', so why not NAND as well?

Others would say it is cleaner in source than (not (and ...))
- especially if you find use of that recurring, since it is
a single function, not a combination of two.

Let's then say I put it in a package that makes its way into
Emacs, and some people start to use it since they also find it
consistent, clean, and useful.

What has then happened?

Have I introduced something that is clean, consistent,
and useful?

Or have I increased the size of the Lisp language by 1, making
it harder for the maintainers to do their work?

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