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.bugs Subject: bug#61281: =?UTF-8?Q?=E2=80=9C`?=(a \, b)=?UTF-8?Q?=E2=80=9D?= equals to =?UTF-8?Q?=E2=80=9C`?=(a . , b)=?UTF-8?Q?=E2=80=9D?= Date: Wed, 8 Feb 2023 03:09:07 +0000 Message-ID: References: <87a61tgdkx.fsf@web.de> <875ycghgv1.fsf@web.de> <871qn4hfte.fsf@web.de> <87fsbju0of.fsf@web.de> <87y1p99h2t.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23567"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Andreas Schwab , Xie Shynur , "61281@debbugs.gnu.org" <61281@debbugs.gnu.org> To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Feb 08 04:10:31 2023 Return-path: Envelope-to: geb-bug-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 1pPaqs-0005yD-21 for geb-bug-gnu-emacs@m.gmane-mx.org; 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So clisp handles the case right (IMO). It doesn't seem to have this bug, at least. > In Emacs we could as well change the symbol (or > whatever object) used as "tag" for the expansion > of the `,` reader construct. But unless this > solves some practical problem, since there is > the cost of breaking code, I don't understand > why we are still discussing this. >=20 > You would suggest to make a change like this, Drew? I can't speak to the code change that should be made. (But I think I understand you, and yes, I think something like that is what's needed.) I do wish the code behaved solidly, with no such "capture" of occurrences of "\,". But I've already agreed with you that I doubt anyone will fix this, and maybe it's too risky to bother doing that. I don't see the risk so much (if at all) in that some code might exist that depends on the bugged behavior. I seriously doubt that. But (1) I don't know that, and nested etc. backquote expressions can get very complicated. I do expect some risk in someone trying to fix this and ending up causing more problems. That's the code breakage I'd worry about. That's a reason I won't be pretending to have the right code fix. Assuming the bug isn't going to be fixed, I'd propose we just describe the problem in a comment. That can be done with words or with code examples. This thread is already full of both. ;-)