From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: "Basil L. Contovounesios" Newsgroups: gmane.emacs.bugs Subject: bug#34873: 27.0.50; Creating unibyte string in emacs modules Date: Tue, 07 May 2019 17:55:56 +0100 Message-ID: <87o94e2ogz.fsf@tcd.ie> References: <83ef77z371.fsf@gnu.org> <88B2D883-45AD-4432-9FE1-D4E24709E294@gmail.com> <831s37ypra.fsf@gnu.org> <07AE3DD5-8AEB-4A7C-B4D3-B20D1593E8DF@gmail.com> <83muluyet7.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="9373"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: 34873@debbugs.gnu.org, lg.zevlg@gmail.com To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue May 07 18:57:18 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hO3P2-0002KF-T8 for geb-bug-gnu-emacs@m.gmane.org; Tue, 07 May 2019 18:57:17 +0200 Original-Received: from localhost ([127.0.0.1]:50151 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hO3Oy-0002cV-OU for geb-bug-gnu-emacs@m.gmane.org; Tue, 07 May 2019 12:57:12 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:56403) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hO3Os-0002cQ-BM for bug-gnu-emacs@gnu.org; Tue, 07 May 2019 12:57:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hO3Oo-0007X8-Lr for bug-gnu-emacs@gnu.org; Tue, 07 May 2019 12:57:06 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:45905) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hO3On-0007WL-Td for bug-gnu-emacs@gnu.org; Tue, 07 May 2019 12:57:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hO3On-0000Ok-OI for bug-gnu-emacs@gnu.org; Tue, 07 May 2019 12:57:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: "Basil L. 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Result of image >> manipulation is raw rgb(a) data that seats in user-ptr available from >> imagemagick without any copying. I want `create-image=E2=80=99 with :for= mat >> =E2=80=98image/x-rgb to accept this user-ptr as data to make image creat= ion fast >>=20 >> Method proposed by Stefan with make_string/encode-coding-string works, b= ut its >> speed is far from being usable on big images. There is no method just t= o use >> data as-is to make things fast > > I'd prefer to provide a way to use user-ptr objects for this purpose, > rather than allow unibyte strings to be created by modules. The > latter is a slippery slope which I think we should rather avoid. > > Can you propose a patch that uses user-ptr instead? Sorry if this is a dumb question, but would the functions unibyte-string, string-to-unibyte, string-as-unibyte et al. be of any use here? --=20 Basil