From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Helmut Eller Newsgroups: gmane.emacs.devel Subject: Re: Help sought understanding shorthands wrt modules/packages Date: Wed, 09 Nov 2022 11:07:11 +0100 Message-ID: References: <87r0yemgt2.fsf@rfc20.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14900"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Nov 09 11:08:29 2022 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 1osi0S-0003c7-C4 for ged-emacs-devel@m.gmane-mx.org; Wed, 09 Nov 2022 11:08:28 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oshzL-0007YW-Oh; Wed, 09 Nov 2022 05:07:21 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oshzI-0007VW-S9 for emacs-devel@gnu.org; Wed, 09 Nov 2022 05:07:16 -0500 Original-Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oshzH-00052M-2u; Wed, 09 Nov 2022 05:07:16 -0500 Original-Received: by mail-wm1-x330.google.com with SMTP id t1so10447391wmi.4; Wed, 09 Nov 2022 02:07:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:from:to:cc:subject:date:message-id:reply-to; bh=fhZRAVuSZJ+CzIg7IbpVG78Z6LapUEGRFGdcWihhJfU=; b=BD0lr0V8fnGDFrHqs2zncYUVOyfhz164G+T+Py7QvmWk4fI9xp0K6vlsv96l6juBHq AWlfzoWzedtMxBtT5nqCw3a0oIk9A+G9Qll/KiDHKzXl/XuPq2bjcjx/JLn6u66Lzq1H x/1Py7AAMmXHukzi9LaOUEYKjJ8l97maMqCdUGWraGiXNzchiH0yLmW88InJc7x18kBz HnwNiTDmN2fR9C/to6IXORBTfKHG0EDzLwAnRt1Fc+5HbDgQuaG4TAPk+XbGgMWJVtOj mHvnzr4n0Qa/I63xmnMbcKutdqn0w4yNIGMSh20QRvCpJz5NQzhMvIyrBlBWPn3H9ajC EvzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=fhZRAVuSZJ+CzIg7IbpVG78Z6LapUEGRFGdcWihhJfU=; b=NUGfaX8eDYAKoa++bPzeveTJQg1WYq9Wls8VuDU8xHXU5ZozO8w6qsIa97pU8QmIWx sd42rIOVqNhsLkU+NT6UYI5EMJlAeuw8r7y+lKRHudxteSmdGsWXIDhTNtfp8LcAVNgK X4BlLWsWJKs1Nr8zrojsT4k6zjzosnHy/4M/GIaO6+OH0YkvfAgZZjBALUFWOrshDsD1 IN296fTo8Xvl7AcabUcw5tq/KcySa7VhVKLeZ0VLkZ6XOK2HJNVwMN2drFdFy3dCQ9+p ubQFsvT1urcdM1sw5CQIcftgq5y+/MQmapuHJufgkBttaED2iGfuaBCQBbAvSwBVzdyq Yyhg== X-Gm-Message-State: ACrzQf1PwuzAZAZ6QEArztuBmx0WXA4yyZD/BojjxLqXPxebGzgC2h9Q zwtwuaClupKjEtLXt7BPg3r1Ohk2WXWjqw== X-Google-Smtp-Source: AMsMyM529cfHocARq6eZ2zwK05K7PtV6Rbl20MJZU43FV8QHjUqeua5jcBJ9HbODfQKo4nviq58Tpw== X-Received: by 2002:a05:600c:1614:b0:3cf:816e:4a69 with SMTP id m20-20020a05600c161400b003cf816e4a69mr29502381wmn.33.1667988432761; Wed, 09 Nov 2022 02:07:12 -0800 (PST) Original-Received: from caladan ([31.177.112.223]) by smtp.gmail.com with ESMTPSA id v11-20020a05600c444b00b003c70191f267sm1119267wmn.39.2022.11.09.02.07.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Nov 2022 02:07:12 -0800 (PST) In-Reply-To: (Richard Stallman's message of "Tue, 08 Nov 2022 23:03:20 -0500") Received-SPF: pass client-ip=2a00:1450:4864:20::330; envelope-from=eller.helmut@gmail.com; helo=mail-wm1-x330.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." 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:299395 Archived-At: On Tue, Nov 08 2022, Richard Stallman wrote: > Making it even worse, once BAR:HACK is recorded as the meaning of HACK > in FOO's symbol table (obarray), there was no way to make it mean some > other symbol HACK. That's technically wrong: it is possibly to "shadow" inherited symbols. E.g. so: (defvar *foo* (make-package "FOO" :use '())) (defvar *bar* (make-package "BAR" :use (list *foo*))) (export (intern "HACK" *foo*) *foo*) (assert (eq (intern "HACK" *bar*) (intern "HACK" *foo*))) (shadowing-import (make-symbol "HACK") *bar*) (assert (not (eq (intern "HACK" *bar*) (intern "HACK" *foo*)))) This shows that FOO::HACK and BAR::HACK can be different symbols even though FOO exports HACK and BAR uses FOO. Helmut