From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Hi-Angel Newsgroups: gmane.emacs.help Subject: Dynamic let for lexical scope? Date: Wed, 13 Feb 2019 02:23:01 +0300 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="83948"; mail-complaints-to="usenet@blaine.gmane.org" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Feb 13 00:23:37 2019 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gthOq-000Lir-Ac for geh-help-gnu-emacs@m.gmane.org; Wed, 13 Feb 2019 00:23:36 +0100 Original-Received: from localhost ([127.0.0.1]:47742 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gthOp-0001kS-4M for geh-help-gnu-emacs@m.gmane.org; Tue, 12 Feb 2019 18:23:35 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:36462) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gthOV-0001jI-GH for help-gnu-emacs@gnu.org; Tue, 12 Feb 2019 18:23:16 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gthOU-0006IW-Vk for help-gnu-emacs@gnu.org; Tue, 12 Feb 2019 18:23:15 -0500 Original-Received: from mail-it1-x12c.google.com ([2607:f8b0:4864:20::12c]:54348) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gthOU-0006GT-R6 for help-gnu-emacs@gnu.org; Tue, 12 Feb 2019 18:23:14 -0500 Original-Received: by mail-it1-x12c.google.com with SMTP id p11so1060748itf.4 for ; Tue, 12 Feb 2019 15:23:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=ggq7QT0W4XMvuDQWKqjuN0e31Imjc28iWvUgoCL6LwE=; b=CwCPMQUYRP+9je978wMlP1yDx4gLTbs7UcchbRS9sto4ySWdYueJHFFQ4uvjGjKrHx c2pnsJGEauWMhlYBXAk4U7lnI0wYIgLIg3BP5F3IoxBrZBpkPSLHRsB0Ua4SO+1OlGnW LnZCCSACeQWsFAYUc7oilfZW2PDBFUYSJ2dSOl6OKNyQwpDFZgPsU5k9I16iusapE2Ye wCAi2E8Im4kfZ+xkpVJaz7PMEXoa6pjte3DqdxHatdPurIqQHdaVbCmwBKGdcY7BJ+BO eEy6qgjds5WJhYm843jb2mwBQodWBtrr8c5RPGQy9yjXRblJgYeqM72dYZBlmcA5Vdbt 5CMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=ggq7QT0W4XMvuDQWKqjuN0e31Imjc28iWvUgoCL6LwE=; b=ObJz3bYufpID4iPAGMzF0fJ36ENv40ThLM2WWChdCiVBejfUApSFG46CkdR/cCRcbX XKlXMypU/poK1VoQOIlfQM2vTxWLf6kVUasNzqmlk0H+iTQx9I7YAwbdesH9eWLkTjFM pNxjecLVLbIgt8G5wv4I8TccFx52QEi4EVcxn/7FtQJvZenxEB+uZXdY41f3vHxCE9ht +0LRCWBBqLp+ZMOsoAxSivFbJOzvOR4y2yyefS+W+0S9x9eeiItlw3txtKGA1/xx61HH 0O/qWOs9nI+pKHX6zROiW5u0V8mkGah5xjhykrIbvtrLbkvTGuVmeUMutjmnD5Kgl7Y3 twxw== X-Gm-Message-State: AHQUAub+BXIaGTh18s+SY6MR7nuTcw2C4w3OJTPfEyP10tXO5xWclc9j NxOcFDV3BKl467ouhjA17DKbYh+8UznpRu5v25x53EIH X-Google-Smtp-Source: AHgI3IbQZxnctfsAp/0e+x/o67il8f6+3FimhoY9vLPzwW58aS4GZVa8t9NlpuDSG/mSmHLn/h3WRlR0Dpw6ZZza8Ak= X-Received: by 2002:a6b:7e48:: with SMTP id k8mr3799453ioq.13.1550013792958; Tue, 12 Feb 2019 15:23:12 -0800 (PST) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::12c X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:119384 Archived-At: I have the following function: (defun sort-lines-nocase (beg end) (let ((sort-fold-case t)) (sort-lines nil beg end))) It temporarily changes sort-fold-case. Now, when compiled with ;;; -*- lexical-binding: t -*- at the top, it causes a warning "Unused lexical variable =E2=80=98sort-fold= -case=E2=80=99". I wonder, how do I temporarily change the global sort-fold-case symbol, and then change it back, aside of surrounding the code with multiple setq?