Received: (at 75415) by debbugs.gnu.org; 7 Jan 2025 19:45:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Jan 07 14:45:27 2025 Received: from localhost ([127.0.0.1]:44770 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tVFVz-0002Qt-Q6 for submit <at> debbugs.gnu.org; Tue, 07 Jan 2025 14:45:27 -0500 Received: from mail-ed1-x535.google.com ([2a00:1450:4864:20::535]:45119) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from <stefankangas@HIDDEN>) id 1tVFVx-0002Qe-Q5 for 75415 <at> debbugs.gnu.org; Tue, 07 Jan 2025 14:45:22 -0500 Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-5d122cf8dd1so27863755a12.2 for <75415 <at> debbugs.gnu.org>; Tue, 07 Jan 2025 11:45:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736279120; x=1736883920; darn=debbugs.gnu.org; h=cc:to:subject:message-id:date:mime-version:references:in-reply-to :from:from:to:cc:subject:date:message-id:reply-to; bh=z5Nijyqp4FDqaA/vZIkNtish0XBzbqaGEVhsp9XJLWM=; b=NYp5ZaEOlHeFLD3pn4MLRoHstfJ4WuQ4q5L2QvmgDlVYt1oP4it5MYyr2Ik4z6vZlN bybXMIzL7WH5kGAkblhP+frZTXZ5+ZPZIrKZaZMjHnaC1HiVGv3EO3ja7VMAoQtJ0G1g XzUxK47WW9PE8vKjzym+zUUA13rNeW2KV862RKo3O264HSnnOqMHIdy3UDtVhFQCUU/K HBPblvEyFlO8UEuJTn33KpXSWrcalnf8XM08k0sOMEpcWaRa5omTYAmmMwdATyzDJOCR UNngvMsD38lWTpxNhPHxpC6TXITKxNvAiEwTkv++h258hQkq70A4rHf/Q6PGv6SEsvi+ asCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736279120; x=1736883920; h=cc:to:subject:message-id:date:mime-version:references:in-reply-to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=z5Nijyqp4FDqaA/vZIkNtish0XBzbqaGEVhsp9XJLWM=; b=IyMQCgQBosB7/F1e0iiKr9vq4rNdRd3Hb4s7GLILvJFkbwJCn3k2g2/i+Gooo+YyIa 3JzkVSDl8EeoogqzfcnosELyukE/MrF9gcBX6hgR0VueqVDK86ipVMZHJcBGiPwy4DR0 6Mfh/YtQiZwoxF8kju02w2schXUiBUlrhrvq/CyEoWV51SYsiJYNkEa1z5oZq8/VNMJx SV9RbkgiQ0DB9U6i3v4JSUQjXKmfPgECsHKvIa4s4Kcg4GjssMJKvZiMA73+NBthhyiI OMf94dSITZX6cFHqUIXTwYMiur+94TqsusKU0z48I7ngq2If4VjzrWNwVKNwx2i3ZB/c ey9w== X-Gm-Message-State: AOJu0YwbfjaYYbTJVTemQTWzQTdm17jlBBukiI/OqHCv8X2vPjkOwEVA 6xxw71y4RB7bXBsx20ZUD73z1Jd6BOcQRHxynr6FxifFEH/SMv2DZbzRESAPF678/7MlypBpOBu eUPhXg3W3pIWMN/BluQH3+YWcGIXbng== X-Gm-Gg: ASbGnct2vYEnvGdCy346er37IGT0fsCUnLNwLPY0pSwOlhUWxE/w8fvmH85DlfPrHKA S2AyWNVX5V62dItRbUQH9nQpVgqZt/C1ZHuHJd4w= X-Google-Smtp-Source: AGHT+IGGxBu+U7G7i3Zm84Dr7eHZJQKRJthlu83ZKnxVqD7boSlJPZyDCrAVqs4ulvruHNkLE0rcKsyoUsPLj4TpM6c= X-Received: by 2002:a05:6402:1ed4:b0:5d0:ed71:3ce4 with SMTP id 4fb4d7f45d1cf-5d972dfea2amr95139a12.6.1736279120232; Tue, 07 Jan 2025 11:45:20 -0800 (PST) Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Tue, 7 Jan 2025 13:45:19 -0600 From: Stefan Kangas <stefankangas@HIDDEN> In-Reply-To: <jwvttabmf9f.fsf-monnier+@gnu.org> References: <jwvttabmf9f.fsf-monnier+@gnu.org> MIME-Version: 1.0 Date: Tue, 7 Jan 2025 13:45:19 -0600 X-Gm-Features: AbW1kva45VKa_UQVj5l3ElwzDr-w0O9Bajn9lzYXhhQlyIHfHZVBCUDUUd9lYG0 Message-ID: <CADwFkmmNt1kt22BhU969FkK-wGxoWXZwRMbYvE6+pVxtzauDnw@HIDDEN> Subject: Re: bug#75415: 31.0.50; quoted-printable-en/decode-region doesn't preserve end markers To: 75415 <at> debbugs.gnu.org Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 75415 Cc: monnier@HIDDEN 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: -1.0 (-) Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN> writes: > I think we really need to introduce a `replace-region` primitive which > takes care of preserving the position of markers instead of having to teach > ELisp coders the delicate art of combining `insert(-before-markers)` and > `delete` to best preserve markers. Sounds good to me, but would this deserve a separate bug report?
bug-gnu-emacs@HIDDEN:bug#75415; Package emacs.
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From: Stefan Monnier <monnier@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 31.0.50; quoted-printable-en/decode-region doesn't preserve end
markers
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Package: Emacs
Version: 31.0.50
In a fresh Emacs try:
(with-temp-buffer
(set-buffer-multibyte nil)
(insert "\300\300")
(encode-coding-region (point-min) (point) 'utf-8)
(quoted-printable-encode-region (point-min) (point))
(insert "!!")
(buffer-string))
It will likely return "=C0!!=C0" whereas it should return "=C0=C0!!".
Found via a bug in VM: https://gitlab.com/emacs-vm/vm/-/issues/491
The same problem plagues `quoted-printable-decode-region`.
I think we really need to introduce a `replace-region` primitive which
takes care of preserving the position of markers instead of having to teach
ELisp coders the delicate art of combining `insert(-before-markers)` and
`delete` to best preserve markers.
Stefan
Stefan Monnier <monnier@HIDDEN>:monnier@HIDDEN, bug-gnu-emacs@HIDDEN.
Full text available.monnier@HIDDEN, bug-gnu-emacs@HIDDEN:bug#75415; Package emacs.
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