From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 25713 invoked from network); 31 Jan 2021 15:27:21 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 31 Jan 2021 15:27:21 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id C269A9C87C; Mon, 1 Feb 2021 01:27:17 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id D2A839C653; Mon, 1 Feb 2021 01:26:45 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=dartmouth.edu header.i=@dartmouth.edu header.b="FD0RZ7Br"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 449659C653; Mon, 1 Feb 2021 01:26:42 +1000 (AEST) Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) by minnie.tuhs.org (Postfix) with ESMTPS id 9BFE49C63D for ; Mon, 1 Feb 2021 01:26:36 +1000 (AEST) Received: by mail-wm1-f41.google.com with SMTP id e15so11051211wme.0 for ; Sun, 31 Jan 2021 07:26:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dartmouth.edu; s=google1; h=mime-version:from:date:message-id:subject:to; bh=0Kr+/kttC4OafTpSN6dh2K2h7wYQSImjcPeOK/vU47s=; b=FD0RZ7BrVz2hvO+AjmLsxpaydIMo8UXmELsk4JvKzxTdTTIPGZd+OVRrux9ulyo9Ee HKqYTkYBmfkLWIXZkNJUerbTEDoODiDUrB/108TsB7ifHI4tKLnvXqKSko898PFXSSob gjbu1YK1+wY2ydnaZ79MWwlJ3lKWK4i7Byvw3vaONwBRmxOenRcvXk2hABdlYqnx7OSM lYqR3qnGHhQxo37px+Je3xrhz27VZiCi4ebBLrh+P+jswDjq/1djuZoKPPEp5JwZfjIx 19N+2v6pIVG0bG5yndBLBaPqK/rRl576GcKuFw48EH7I1+wjF18r99hhjgMmZrDfZ6wH uHQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=0Kr+/kttC4OafTpSN6dh2K2h7wYQSImjcPeOK/vU47s=; b=EtGAGqZZgOJsLtCQfmEEE1GKzolDn0unShqWqiUXCc4NEHbgrfxx+nRQY0I7FEWEGi 2V3VZmo2OFYvfdqy33Z83nKjisbe8vh7prLq4YnYXdDrqCecN3uQ98hn1n9TLZFJTNd9 gI4JSx/cqiPGdy9IHM85U/vlpFX8+7H0e5Jh+FceD/pM45v0EyNXEx+6nSGdbeIFejGN eJGpMQfZH+i4AAmpKfyU+Hd8h3ZTpq3wRm+94WxuEJbWpqPOqf3TKZCWD/J9cyB9EjQw u3f0hwpj6x0w2x3hc+fUu6/akFGn0psrs7lvEUEOShMXvxa4ereyXd+GMIwylaI94nkq 7b1g== X-Gm-Message-State: AOAM531P5TejBmL5WveQx/qWthNYPm8a0IHAX34VQ7lDP5UxYwSwRKiI J+ilUAyX+7AanfSIcRPsTWjwm3J9ywBcXGr77aPOp94AKvK5fg== X-Google-Smtp-Source: ABdhPJyuLhyQQxB1HrBKftgyFEqER8658yJ9tE/KCAW0Wrkb4O9/N7/kT8wPx8LEUBgzcweyOmwRcq7q718N2jStlSg= X-Received: by 2002:a7b:cb05:: with SMTP id u5mr10810666wmj.140.1612106794504; Sun, 31 Jan 2021 07:26:34 -0800 (PST) MIME-Version: 1.0 From: M Douglas McIlroy Date: Sun, 31 Jan 2021 10:26:22 -0500 Message-ID: To: tuhs@minnie.tuhs.org Content-Type: multipart/alternative; boundary="000000000000d3ab9e05ba33dc9f" Subject: [TUHS] [TUHS} Qed vs ed X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000d3ab9e05ba33dc9f Content-Type: text/plain; charset="UTF-8" I used Ken's qed in pre-Unix days. I understand its big departure from the original was regular expressions. Unix ed was the same, with multi-file capability dropped. Evidently the lost function was not much missed, for it it didn't come back when machines got bigger. I remember that fairly early in PDP-11 development ed gained three features: & in the rhs of substitutions plus k and t commands. (I'm not sure about &--that was 50 years ago.). With hindsight it's surprising that a "minimalist" design had m but not t, for m can be built from t but not vice versa. A cheat sheet for multics qed is at h ttp:// www.bitsavers.org/pdf//honeywell/multics/swenson/6906.multics-condensed-guide.pdf. It had two commands I don't remember: sort(!) and transform, which I assume is like y in sed. Doug --000000000000d3ab9e05ba33dc9f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I used Ken's qed in = pre-Unix days. I understand its big departure from=C2=A0the=C2=A0 original = was regular expressions. Unix ed was the same, with multi-file=C2=A0capabil= ity dropped. Evidently the lost function was not much missed, for it it did= n't come back when machines got bigger. I remember that fairly early in= PDP-11 development ed gained three features: & in the rhs of substitut= ions plus k and t commands. (I'm not sure about=C2=A0&--that was 50= years ago.).

=C2=A0With hindsight it's = surprising that a "minimalist" design had m but not t, for m can = be built from t but not vice versa. A cheat sheet for multics qed is at=C2= =A0http://www.bitsav= ers.org/pdf//honeywell/multics/swenson/6906.multics-condensed-guide.pdf= . It had two commands I don't remember: sort(!) and transform, which I = assume is like y in sed.

Doug
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