From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#73431: Add `setf` support for `stream.el` in ELPA Date: Tue, 24 Sep 2024 22:56:14 -0400 Message-ID: References: <827cc7fc-10be-4b93-bd67-f275193e5d84@protonmail.com> <87ikultl1v.fsf@posteo.net> <2522160a-761c-4f23-a9c7-4740b49681f1@protonmail.com> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20153"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Philip Kaludercic , Nicolas Petton , 73431@debbugs.gnu.org To: Okamsn Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 25 04:56:55 2024 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 1stICz-00050y-Ct for geb-bug-gnu-emacs@m.gmane-mx.org; 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Tue, 24 Sep 2024 22:56:15 -0400 (EDT) In-Reply-To: <2522160a-761c-4f23-a9c7-4740b49681f1@protonmail.com> (okamsn@protonmail.com's message of "Wed, 25 Sep 2024 00:17:50 +0000") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:292374 Archived-At: > Currently, using `(setf (seq-elt STREAM 0) VAL)` silently fails, because > it treats the stream as a list, breaking the stream. Sounds like a bug, indeed. But I'd rather fix it by making it fail cleanly, to preserve the (current) immutability of streams (at least until we decide that there's a good reason for streams to be mutable). > On the desire for mutability, there is the included macro `stream-pop`. `stream-pop` does not mutate the stream. It only mutates a local variable (which holds a (reference to a) stream). Stefan