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_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 7536 invoked from network); 1 Aug 2020 13:32:45 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 1 Aug 2020 13:32:45 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 08D089CB3C; Sat, 1 Aug 2020 23:32:42 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id F39679C9E3; Sat, 1 Aug 2020 23:32:11 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="r6ox3thj"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 15A309C9E3; Sat, 1 Aug 2020 23:32:10 +1000 (AEST) Received: from mail-lj1-f177.google.com (mail-lj1-f177.google.com [209.85.208.177]) by minnie.tuhs.org (Postfix) with ESMTPS id 4EE2D93DFC for ; Sat, 1 Aug 2020 23:32:09 +1000 (AEST) Received: by mail-lj1-f177.google.com with SMTP id w14so5305661ljj.4 for ; Sat, 01 Aug 2020 06:32:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ZjhXDXt8GwfTVuRsKgJ7tEj8z9mAOKtkjz4XVuXAYoM=; b=r6ox3thjfgCnMZGg5QCrwNUpPb/H2OFTwPYk5RHmAL/lcSPn9XmoIvC57gPCZbYERr nu2qgfFBFFAckYKnA5OKKdIk5hhfQFuPDeYRuSEmbDraRX2ZjewFYspOoiufCkcazYyU ET2yRPAPE4VoD+AuY133gG21Vt3KhChqHaM/43iewl9g0uUCVafwbtJGHBMULH8LkUiB dyy6NsBPqEph2hWrgFkJ+xXbPkKy5+3Iyh+XNg09eH8aDLY9n8GGJD19HQ17QstzJe3B twFqUwT424BlMCnzr+BVid0HvMMCOudhHrU6RboRAuRupRxFYc3RukN7gEtJTvp84LXt TUaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ZjhXDXt8GwfTVuRsKgJ7tEj8z9mAOKtkjz4XVuXAYoM=; b=YfemyE/qw4Wt7Kkzj7Ukrf8M4SkDR4uof84WXC9G7nBoYrPU3F67y+5BEGKs9T5SvT PBz0zR1Lv7ISqublksKrZR3rSrRUVf3p68mV53uYXFtXM5DkjnJJZmkT4rZl5iM1pwCv i0y62R2tDuydxpol6oDrr5i2elHH9qTPPFTw6L13vxVCXyIp5UCIZvaPTC+DX8HLjlLp HM6NCSUkVzslvs/yKS/nuHIUFgAD+1FiDQme0R1uTgb/3pLdLy+bX1LdUzofK3fj62/9 u686C1FfqHAYcCaV/oR+5j2Hry+h77IwrB6pshh1jZW2TstkwEPCFp9xE3w25os8NJK9 MD6A== X-Gm-Message-State: AOAM532psOMEhy9zcfcGTrTAW2nOYaRhUIaBgnNP8jwr67P46Pn5pIt3 C1nEeH8slj43kAXpvTW3mZDIJEMgTOQr5im9DIHbOeSt X-Google-Smtp-Source: ABdhPJxCckkruFA+gq/5mnS9W/eBHl0IwSsv+Ai+HOiaU3EBynu+LFjjXOETg9nO1F1VRI1kdE6dcv93Lbf8N0cLcdc= X-Received: by 2002:a2e:8056:: with SMTP id p22mr4018936ljg.397.1596288727567; Sat, 01 Aug 2020 06:32:07 -0700 (PDT) MIME-Version: 1.0 References: <6e9ca056-dfb0-376d-effd-e41c9ed3ef2a@gmail.com> <88FBBEDA-3D60-4782-9C4B-43C64691BC35@humeweb.com> In-Reply-To: <88FBBEDA-3D60-4782-9C4B-43C64691BC35@humeweb.com> From: Richard Salz Date: Sat, 1 Aug 2020 09:31:55 -0400 Message-ID: To: Andrew Hume Content-Type: multipart/alternative; boundary="00000000000090d3cc05abd0eea2" Subject: Re: [TUHS] Regular Expressions 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: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --00000000000090d3cc05abd0eea2 Content-Type: text/plain; charset="UTF-8" > during the mid 80s, i was preparing one of the first invited talks for > USENIX on the subject of regular expressions. > i had concocted a massive RE that matched all the known spellings of > saddam hussein. (it was complicated, > I wonder if that was the inspiration for the Qaddafi torture test; see http://sources.vsta.org/comp.sources.unix/volume9/fastgrep/part01 (June 87) The first time I saw "p[-1]" was looking at some regexp source. It blew/expanded my mind. --00000000000090d3cc05abd0eea2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

during the mid 80s, i was preparing one of the first invited talks for USEN= IX on the subject of regular expressions.
i had concocted a massive RE that matched all the known spellings of saddam= hussein. (it was complicated,

I wonder if that was the inspiration for t= he Qaddafi torture test; see http://sources.vsta.org/comp.sources.unix/v= olume9/fastgrep/part01 (June 87)

The first tim= e I saw "p[-1]" was looking at some regexp source.=C2=A0 It blew/= expanded my mind.
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