From: Tassilo Horn <tsdh@gnu.org>
To: Hongyi Zhao <hongyi.zhao@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Add/remove an element into/from a cons.
Date: Tue, 26 Oct 2021 06:57:08 +0200 [thread overview]
Message-ID: <875ytkqt4x.fsf@gnu.org> (raw)
In-Reply-To: <CAGP6PO+=SPh7kLV00QYQGBb8bjKacNhzuz2q3FALZaq1y==BwQ@mail.gmail.com>
Hongyi Zhao <hongyi.zhao@gmail.com> writes:
> How can I add/remove an element into/from a cons, taking the following
> one as an example:
>
> ```emacs-lisp
> (setq company-backends '((company-tabnine :separate company-capf
> company-dabbrev company-keywords company-files company-ispell)))
> ```
>
> How can I remove `company-ispell` from and re-add it into the
> company-backends defined above?
You can use `setf' with the place being the alist entry like this
(company-backends replaced with th/test in my example):
--8<---------------cut here---------------start------------->8---
(setq th/test '(( company-tabnine :separate company-capf company-dabbrev
company-keywords company-files company-ispell)))
(let ((place (assoc 'company-tabnine th/test)))
(setf place (remove 'company-ispell place)))
--8<---------------cut here---------------end--------------->8---
HTH,
Tassilo
next prev parent reply other threads:[~2021-10-26 4:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 2:05 Add/remove an element into/from a cons Hongyi Zhao
2021-10-26 4:57 ` Tassilo Horn [this message]
2021-10-26 5:40 ` Hongyi Zhao
2021-10-26 5:42 ` Hongyi Zhao
2021-10-26 6:07 ` Hongyi Zhao
2021-10-26 6:18 ` Tassilo Horn
2021-10-26 6:30 ` Hongyi Zhao
2021-10-26 6:39 ` Hongyi Zhao
2021-10-26 6:08 ` Tassilo Horn
2021-10-26 6:17 ` Hongyi Zhao
2021-10-26 6:22 ` Tassilo Horn
2021-10-26 8:12 ` Hongyi Zhao
2021-10-26 8:15 ` Tassilo Horn
2021-10-26 9:26 ` Hongyi Zhao
2021-10-26 9:31 ` Hongyi Zhao
2021-10-26 18:56 ` Tassilo Horn
2021-10-27 1:39 ` Hongyi Zhao
2021-10-27 4:54 ` Hongyi Zhao
2021-10-27 5:13 ` Hongyi Zhao
2021-10-27 18:43 ` Tassilo Horn
2021-10-28 4:14 ` Hongyi Zhao
2021-10-28 4:36 ` Hongyi Zhao
2021-10-28 5:40 ` Hongyi Zhao
2021-10-26 12:36 ` Stefan Monnier
2021-10-26 13:41 ` Hongyi Zhao
2021-10-26 6:22 ` Hongyi Zhao
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