From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Basil L. Contovounesios" <contovob@tcd.ie>
Cc: Adam Porter <adam@alphapapa.net>, emacs-devel@gnu.org
Subject: Re: Supporting newer Emacs features in older Emacs versions without warnings?
Date: Mon, 27 Sep 2021 14:38:24 -0400 [thread overview]
Message-ID: <jwvr1d9sw9o.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87ilynxowy.fsf@tcd.ie> (Basil L. Contovounesios's message of "Sun, 26 Sep 2021 17:49:33 +0100")
Basil L. Contovounesios [2021-09-26 17:49:33] wrote:
> Stefan Monnier [2021-09-24 09:14 -0400] wrote:
>> Can you guys come up with an idea of how to change shortdoc.el so that
>> your package can do its job more easily and cleanly?
>> [ Ideally without having to use eval-after-load nor having to require
>> shortdoc. ]
>
> Apart from eval-after-load, what other mechanisms do we have that can
> register information before a package is loaded? There's obarray and
> there are hooks, is there something else?
For buffer-local info, the standard way is for the amjor mode to do
(setq-local <foo> <bar>)
Example of <foo> include `font-lock-defaults` (back when font-lock was
not enabled by default), `outline-regexp`, `imenu-generic-expression`, ...
Here I think we want something that's not buffer-local, so we'd need
something else. Not sure what's the best option. Maybe
(add-hook 'shortdoc-foo-functions #'...)
?
> The entrypoint command shortdoc-display-group could, every time it is
> invoked, scan obarray for certain symbol properties, or run a hook, to
> accumulate auxiliary shortdoc forms, in addition to those that were
> already permanently stored in shortdoc--groups.
That's also an option, yes (scanning `obarray` is fairly quick).
Stefan
next prev parent reply other threads:[~2021-09-27 18:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-23 1:48 Supporting newer Emacs features in older Emacs versions without warnings? Adam Porter
2021-09-23 8:58 ` Basil L. Contovounesios
2021-09-24 6:08 ` Adam Porter
2021-09-24 13:14 ` Stefan Monnier
2021-09-24 22:22 ` Adam Porter
2021-09-26 16:49 ` Basil L. Contovounesios
2021-09-27 18:38 ` Stefan Monnier [this message]
2021-09-28 10:26 ` Basil L. Contovounesios
2021-09-28 12:51 ` Stefan Monnier
2021-09-28 17:07 ` Basil L. Contovounesios
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