From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: closure within closure, incorrect (?) byte-compiler warnings Date: Wed, 03 Nov 2021 04:05:46 +0100 Message-ID: <87o872rl9x.fsf@zoho.eu> References: <87o874tkvv.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6402"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:pTwf/KcV7FrL2o1ZB8txd7+ms8U= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 03 04:06:31 2021 Return-path: Envelope-to: geh-help-gnu-emacs@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 1mi6bf-0001PB-LB for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 03 Nov 2021 04:06:31 +0100 Original-Received: from localhost ([::1]:35482 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mi6bd-0005qO-Vk for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 02 Nov 2021 23:06:29 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35404) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mi6bG-0005qD-2F for help-gnu-emacs@gnu.org; Tue, 02 Nov 2021 23:06:06 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:57746) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mi6bD-0005MD-5T for help-gnu-emacs@gnu.org; Tue, 02 Nov 2021 23:06:05 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mi6b9-0000fj-3L for help-gnu-emacs@gnu.org; Wed, 03 Nov 2021 04:05:59 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:134325 Archived-At: Stefan Monnier via Users list for the GNU Emacs text editor wrote: >> (let ((next 1)) >> (defun australian-survivor (ep) >> (interactive (list (read-number prompt next))) > > IIRC the current compiler code doesn't support this kind of > "interactive spec nested within a lexical scope". I did a little experiment (last) and the byte compiler complains when there is a closure within a closure, now it just gives the "reference to free variable" and not the "Unused lexical variable" warning I got last time [1] - I don't know why, but it's still not true ... no complains when there is just a closure with `interactive'. > Your code makes sense, but AFAIK it may not always work > correctly :-( You mean its worse than just the incorrect message? Will it work when just evaluated, not byte-compiled? And "not always work", how can that be? > You might want to `M-x report-emacs-bug` (and if so, please > put me in the `X-Debbugs-Cc:`). Sure ... soon. (declare-function set-num nil) (declare-function set-number nil) (declare-function get-num nil) (let ((number 0)) (defun set-num (num) (interactive "nNumber: ") (setq number num) ) (defun set-number (&optional num) (interactive (list (read-number "Number: " 0))) (set-num num) ) (defun get-num () (interactive) (message "%f" number) )) (declare-function set-num-x nil) (declare-function set-number-x nil) (declare-function get-num-x nil) (let ((caption "Number-X: ")) (let ((number-x 0)) (defun set-num-x (num-x) (interactive "nNumber-X: ") (setq number-x num-x) ) (defun set-number-x (&optional num-x) (interactive (list (read-number caption 0))) (set-num-x num-x) ) (defun get-num-x () (interactive) (message "%s%f" caption number-x) ))) ;; geh.el:43:39: Warning: reference to free variable ‘caption’ [1] https://dataswamp.org/~incal/emacs-init/w3m/w3m-survivor.el -- underground experts united https://dataswamp.org/~incal