From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Philip Kaludercic <philipk@posteo.net>
Cc: "J.P." <jp@neverwas.me>, emacs-devel <emacs-devel@gnu.org>,
Amin Bandali <bandali@gnu.org>,
emacs-erc@gnu.org
Subject: Copying autoloads (was: Adding 'compat' from ELPA as an optional dependency to ERC)
Date: Tue, 26 Jul 2022 17:00:40 -0400 [thread overview]
Message-ID: <jwvczdsiwr2.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87bktddnrs.fsf@posteo.net> (Philip Kaludercic's message of "Mon, 25 Jul 2022 18:56:39 +0000")
Philip Kaludercic [2022-07-25 18:56:39] wrote:
> (defun get-compatibility-func (name)
> "Return the function NAME of a compatibility alias."
> (let* ((compat (intern-soft (format "compat-%s" name))))
> (or (symbol-function (if (fboundp name) name compat))
> (error "No definition for %S could be found" name))))
Side note: if `name` is autoloaded this will not return a "valid" value,
in the sense that the (autoload ...) value stored in `symbol-function`
is only usable when placed inside `name` and not elsewhere (e.g. you
can't `funcall` it, and if you store it in another symbol, calling the
function under that other symbol will probably fail).
Autoloads are somewhat hackish in this sense.
Stefan
next prev parent reply other threads:[~2022-07-26 21:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-19 14:43 Adding 'compat' from ELPA as an optional dependency to ERC F. Jason Park
2022-07-19 16:17 ` Stefan Monnier
2022-07-19 16:25 ` Philip Kaludercic
2022-07-19 22:34 ` J.P.
2022-07-25 18:56 ` Philip Kaludercic
2022-07-26 3:04 ` J.P.
2022-07-26 15:17 ` Philip Kaludercic
2022-07-27 12:55 ` J.P.
2022-07-26 21:00 ` Stefan Monnier [this message]
2022-07-26 23:00 ` Copying autoloads Philip Kaludercic
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