From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.devel Subject: RE: [External] : Re: funcall of load-read-function (default nil) in elisp--eval-defun Date: Fri, 1 Dec 2023 17:06:00 +0000 Message-ID: References: <87edg550zk.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34899"; mail-complaints-to="usenet@ciao.gmane.io" To: Michael Heerdegen , "emacs-devel@gnu.org" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Dec 01 18:07:13 2023 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1r96yu-0008vA-5Y for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Dec 2023 18:07:12 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r96xx-0007wD-49; 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:313448 Archived-At: > > I see this line in elisp--eval-defun at least Emacs 28 - 30 (pre- > release): > > > > (setq form (funcall load-read-function (current-buffer))) > > > > The default for load-read-function is nil, so it can't be called as a > > function by default. >=20 > The default has been `read' since Emacs 25.1. Prior to Emacs 28 I don't find that variable at all, so in those versions it's not the variable value whose default is `read'; it's the (only) behavior that's `read'. But yes, in those prior versions, function `read' is used literally where Emacs 28+ uses the variable. It seems that (e.g. in 28.2) the variable is dynamic and is let-bound in function `debug', in debug.el. But it is used also in function `elisp--eval-defun' in elisp-mode.el. I see no place where it might get bound to nil, but maybe that happens in some non-vanilla code. HTH.