X-Loop: help-debbugs@HIDDEN Subject: bug#59140: 29.0.50; iter-yield from lambda Resent-From: Michael Heerdegen <michael_heerdegen@HIDDEN> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> Resent-CC: bug-gnu-emacs@HIDDEN Resent-Date: Wed, 09 Nov 2022 01:24:01 +0000 Resent-Message-ID: <handler.59140.B.16679569903723 <at> debbugs.gnu.org> Resent-Sender: help-debbugs@HIDDEN X-GNU-PR-Message: report 59140 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 59140 <at> debbugs.gnu.org Cc: okamsn@HIDDEN X-Debbugs-Original-To: bug-gnu-emacs@HIDDEN Received: via spool by submit <at> debbugs.gnu.org id=B.16679569903723 (code B ref -1); Wed, 09 Nov 2022 01:24:01 +0000 Received: (at submit) by debbugs.gnu.org; 9 Nov 2022 01:23:10 +0000 Received: from localhost ([127.0.0.1]:38448 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1osZo5-0000xz-TT for submit <at> debbugs.gnu.org; Tue, 08 Nov 2022 20:23:10 -0500 Received: from lists.gnu.org ([209.51.188.17]:58728) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <michael_heerdegen@HIDDEN>) id 1osZo4-0000xs-Hn for submit <at> debbugs.gnu.org; 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Wed, 09 Nov 2022 02:22:57 +0100 From: Michael Heerdegen <michael_heerdegen@HIDDEN> Date: Wed, 09 Nov 2022 02:22:56 +0100 Message-ID: <87sfissyz3.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:iWZZ5Tqy/6hOAzVnXwGDge0US8p5djHL+aR96aosEquoH1Hs5ev wqCjIHzGq1muJjkgYj636pNKjDUnyRCy06hFHd3lOY2xh2/qdy7YMkTR0LZj2N2dFpQlh41 WRT5R5eFFDa0z8L/owOt+M9ypdAo/nBI1eY+vAoOySHFp6WjChV6FQ0zB9na/+yxksUpb9v pZJbKdvJwQtP9IMFh3kPg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:D+eria/AiwQ=;Pxt+wrWuGh07Q71m8cNQf7qcvU9 dKBhgL35dVwg70bj2aBGqFwNgG6/Z0SCuj41rj1kW9AfhbyupGsGohQr5fDOx7w24v5G2oYzc Ov0BfWwO82N2LhnxqmRqgIxWuP/CdlSZfdqmLZB3ANO0KBvEJYs2aQNPmSdtTED9EBMRNq8QF QRZeD3DJrnGwNpPdX+GEtziIBwujspOqCRMKjdPc+CUyAlKHPZOWpJhGLQ3tf6HQoSJS68k1X utFDXAvit+1EEn/h7GOLcyfoIQLWK7a8lqXDfG0KHSWMg3Dm5bgCSL2szNgf8cTpQRWpQxgYr hYx7zXTx4eX5bICoSuApWEqGFuRwQRgIp2BnyyToMUgdrDEdRPeL8C0jYirXt3SBMeSgOA5x9 VMLImpW5a7juWpTyfM/uqknI0a1XkfNOnJi56AoUtQI9auQc0jFumPztrHX9Y8iNd37h3KNM7 i/BOM6Wr8E0rnBr6H+IrecIUKOv+Ze0YHEcVyMxLTk768fzH7QEyLMOl3G2gMqssvRkty/8JN Pc8K97w9fvm7v05eq03tEcG9tEaDehBHP9v42FVDWlsBdxaRr68We2m9wRPBj71IMvZa50G9Z 0LTkFoz+9bFPQNd26UqI+e/VF6jnI9g4hzEv3A2kTkEpy/c2UifZa5ARF74XbXGdZAJfDGMvi eDagp+/cO4FKgWIB6a9i3CxrQRfkzhusCp4O9m1rbPQeo8zo7OJfHztv09MU0PWqAv78HTKy0 Y3tCWK0DcSHjxuIk0ZwfDOCCD700+l6jUe9eqdJx+ILycKtfMjJpg5QY/Xjg3s02PKg5Yv30g YyxdGrkBj/ovNTGYdKokbnmFfY3Gswf/FgkCgZ2gUbQmpvyXbsC+Rc2/8GwaSctxikr5ZInUB l+kNr/G/J67L0HkHjmME5vC9Lr9gtIod/xikchULRD2Sk9sKzyB6EWSRk3mYWi7nvNe4ch6NJ Encimu3jko9Gmaj0i3EnLHMlkLw= Received-SPF: pass client-ip=217.72.192.78; envelope-from=michael_heerdegen@HIDDEN; helo=mout.web.de X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -0.7 (/) X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.4 (--) Hello, In emacs-help (Okamsn <okamsn@HIDDEN>) it has been pointed to the issue that `iter-yield' (from generator.el) is not supported in some contexts - contexts where yielding happens from inside a lambda expression or directly (like here when mapping over a sequence), e.g. (setq iter-maker (iter-lambda (x) (seq-doseq (item x) (iter-yield item)))) (setq my-iter (funcall iter-maker '(1 2 3))) (iter-next my-iter) ~~> (void-function cps-internal-yield) (seq-doseq expands to more or less just mapc+lambda) or (setq iter-maker (iter-lambda (x) (seq-do #'iter-yield x))) (setq my-iter (funcall iter-maker '(1 2 3))) (iter-next my-iter) ~~> (error "=E2=80=98iter-yield=E2=80=99 used outside a generator") These examples are written correctly but seem to hit an undocumented limitation of the implementation in generator.el I quote Stefan Monnier answering what should be done: > IIRC, one of the main limitations of `generator.el` is that it doesn't > handle `lambda` (and neither should you use `#'iter-yield`, IIRC). >=20 > I don't really know how to go about fixing it. >=20 > A good first step would be to make sure it emits an error (or a warning) > when you use `#'iter-yield` or when you call `#'iter-yield` from with > a lambda expression. TIA, Michael.
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Michael Heerdegen <michael_heerdegen@HIDDEN> Subject: bug#59140: Acknowledgement (29.0.50; iter-yield from lambda) Message-ID: <handler.59140.B.16679569903723.ack <at> debbugs.gnu.org> References: <87sfissyz3.fsf@HIDDEN> X-Gnu-PR-Message: ack 59140 X-Gnu-PR-Package: emacs Reply-To: 59140 <at> debbugs.gnu.org Date: Wed, 09 Nov 2022 01:24:01 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-gnu-emacs@HIDDEN If you wish to submit further information on this problem, please send it to 59140 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 59140: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D59140 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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