Re: How to create a higher order function?

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

Leo Butler wrote:

>> It seems to work fine, even if it's a bit complicated.
>>
>> Of course, the more obvious way to do it is to use the
>> first definition under lexical scope (C):
>>
>> ;;; -*- lexical-binding: t; -*-
>> (defun negate (fun)
>>   "Try to return a function returning the logical opposite of FUN."
>>   (lambda (&rest args)
>>     (not (apply fun args))))
>
> Obviously C is better.

Let's RETURN to the POINT(ER): you can do it with C ...

> Q: I see you use mu4e. How do you get the code highlighted?
> (in my Gnus, the background is distinctive blue).

Yep, looks baaad!

The face is `mm-uu-extract', one can disable it that way.

Do `gnus-summary-show-article' with C-u to see that it looks
like this:

--8<---------------cut here---------------start------------->8---
;;; -*- lexical-binding: nil; -*-
(defun negate (fun)
  "Try to return a function returning the logical opposite of FUN."
  (lambda (&rest args)
    (not (apply fun args))))
--8<---------------cut here---------------end--------------->8---

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