From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#30078: 27.0.50; Use lexical-binding for M-: Date: Sat, 13 Jan 2018 21:37:09 +0200 Message-ID: <83a7xh1rfe.fsf@gnu.org> References: <87h8rsaz8z.fsf@web.de> <838td32afg.fsf@gnu.org> <83373a3o0i.fsf@gnu.org> <83zi5i26bi.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1515872175 23668 195.159.176.226 (13 Jan 2018 19:36:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 13 Jan 2018 19:36:15 +0000 (UTC) Cc: michael_heerdegen@web.de, 30078@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Jan 13 20:36:11 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eaRb7-0005fq-3n for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Jan 2018 20:36:09 +0100 Original-Received: from localhost ([::1]:59803 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eaRd6-0006RV-RY for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Jan 2018 14:38:12 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45184) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eaRd0-0006RF-Tg for bug-gnu-emacs@gnu.org; Sat, 13 Jan 2018 14:38:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eaRcw-0007Nq-5J for bug-gnu-emacs@gnu.org; Sat, 13 Jan 2018 14:38:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:47243) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eaRcw-0007Nj-14 for bug-gnu-emacs@gnu.org; Sat, 13 Jan 2018 14:38:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eaRcv-0005D1-RZ for bug-gnu-emacs@gnu.org; Sat, 13 Jan 2018 14:38:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 13 Jan 2018 19:38:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 30078 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 30078-submit@debbugs.gnu.org id=B30078.151587226720003 (code B ref 30078); Sat, 13 Jan 2018 19:38:01 +0000 Original-Received: (at 30078) by debbugs.gnu.org; 13 Jan 2018 19:37:47 +0000 Original-Received: from localhost ([127.0.0.1]:55140 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eaRch-0005CZ-Jk for submit@debbugs.gnu.org; Sat, 13 Jan 2018 14:37:47 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:54136) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eaRcg-0005CL-9w for 30078@debbugs.gnu.org; Sat, 13 Jan 2018 14:37:46 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eaRcW-0006xK-HR for 30078@debbugs.gnu.org; Sat, 13 Jan 2018 14:37:41 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:49878) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eaRcW-0006xB-D6; Sat, 13 Jan 2018 14:37:36 -0500 Original-Received: from [176.228.60.248] (port=1912 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1eaRcU-00006P-Gj; Sat, 13 Jan 2018 14:37:36 -0500 In-reply-to: (message from Stefan Monnier on Sat, 13 Jan 2018 13:05:58 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:142129 Archived-At: > From: Stefan Monnier > Cc: michael_heerdegen@web.de, 30078@debbugs.gnu.org > Date: Sat, 13 Jan 2018 13:05:58 -0500 > > (let ((foopkg-var t)) > (foopkg-fun arg1 arg2)) > > where foopkg is not yet loaded and foopkg-fun is autoloaded: Emacs will > only be told that `foopkg-var` is a dynamic-variable once the > `foopkg-fun` call causes `foopkg` to be loaded, so Emacs will mistakenly > use lexical scoping for the let binding because at that it still knows > nothing about `foopkg-var`. That indeed could be a confusing situation, perhaps we should have a special form for it, to avoid the confusing/incorrect/unexpected results.