From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-it1-f173.google.com (mail-it1-f173.google.com [209.85.166.173]) by fantadrom.bsd.lv (OpenSMTPD) with ESMTP id 71b560a7 for ; Fri, 8 Feb 2019 18:18:40 -0500 (EST) Received: by mail-it1-f173.google.com with SMTP id b5so13222272iti.2 for ; Fri, 08 Feb 2019 15:18:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cathet-us.20150623.gappssmtp.com; s=20150623; h=sender:from:to:cc:subject:in-reply-to:references:comments :mime-version:content-id:date:message-id; bh=WnFFOH66G2ITg5p2lhg+zEj4cpDdknJbQyfrfkI+2S0=; b=UTas+u4/Bvsi/qG6HM5JMDlHH3XjS8BOiLa5J3WfHfHmgugGUJKfMTRxX8S8I4E5Ya 9XelahaUICMhpaO8h/f5Os3R5BMHfrioEbVt6R6AWd8fg08RHHCoz4I5OHBcXYSo5gOz Xttrj1gMUT6ueJWNYzw01/3OQjxcNjewo+qIOvDEVoKuNcGZXKLOgDG1CPM5qdE1NMIj QyXUkGXolqAvejq2bZlbAGRSHMN8lr/Z2+0hWxUEkhmz8Zho8CPpF1RPXNDEMJCePjEH UjPbZEq54SPCAuml1Jdyn1g3SevDaocTUJOyefsVadVgGQiZAk5E1EUHRT+oaD5hfO9S Z7lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :comments:mime-version:content-id:date:message-id; bh=WnFFOH66G2ITg5p2lhg+zEj4cpDdknJbQyfrfkI+2S0=; b=iEqdGoEI2HBh4WP7QZ/vS3TJ11VVm74XGxwzuk2+u4JaYGPxTAosGNNkSGKrMpQCn5 OfwbWgZ3RYFr39ng7xoA6rUYAn/1u5EiDY04gM+mZtFUPvCR0GofBbm2JoaoIi97DNTa CNtpwb/Ou2p9O9TCX2uqKUNsurHiz5i2wy7f7XZGGX6hpwFkWH2e06CUa2+W7usltNbz X+ufnPDDvZDhDeQh6ZGJcx31cOrNApoeuMnbAc4qKTSfHB9g//FYUEmXYEC69Ks96QlF eBsFUpwQk4JZWi3e5tCfkkiUu5D6rOSViidPpSg9wKX26difMncY2u8kZ/ZDa6PWPhUv biQg== X-Gm-Message-State: AHQUAubLBEzkVGjksQAvkP7eWOdNuoWHw2oxFKlMmZ5SgZyJ9Q7Y3ttP nJimdVkbMw3SbaERwzDBki+nyQ== X-Google-Smtp-Source: AHgI3Ibbxcv9y9tOMwyBEe26yjVkw9KZVvyfUokMmxjgsS8e877wGPckqSw5N2m2TsDF1AU9V0K6Eg== X-Received: by 2002:a24:2a4a:: with SMTP id w71mr534095itw.127.1549667919535; Fri, 08 Feb 2019 15:18:39 -0800 (PST) Received: from desktop.ajb.soy (67-0-26-96.albq.qwest.net. [67.0.26.96]) by smtp.gmail.com with ESMTPSA id d11sm1509186ioq.31.2019.02.08.15.18.38 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 08 Feb 2019 15:18:39 -0800 (PST) Sender: "Anthony J. Bentley" Received: from desktop.ajb.soy (localhost [127.0.0.1]) by desktop.ajb.soy (OpenSMTPD) with ESMTP id 19b6751c; Fri, 8 Feb 2019 16:18:37 -0700 (MST) From: "Anthony J. Bentley" To: Ingo Schwarze cc: tech@mandoc.bsd.lv Subject: Re: table borders don't span entire width In-reply-to: <20190208223911.GH20044@athene.usta.de> References: <29630.1549662225@desktop.ajb.soy> <20190208220221.GF20044@athene.usta.de> <20190208223911.GH20044@athene.usta.de> Comments: In-reply-to Ingo Schwarze message dated "Fri, 08 Feb 2019 23:39:11 +0100." X-Mailinglist: mandoc-tech Reply-To: tech@mandoc.bsd.lv MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <83465.1549667917.1@desktop.ajb.soy> Date: Fri, 08 Feb 2019 16:18:37 -0700 Message-ID: <48691.1549667917@desktop.ajb.soy> Hi Ingo, The missing characters ring a bell. I'm pretty sure I investigated this before, came to the same conclusion (that needed box drawing characters don't exist), and then must have forgotten all about it. Ingo Schwarze writes: > So in particular, the following are missing: > > * double right > * double down > * single left with double right > * single left down with double right > * single left with double right down > * double left > * double left with single right > * double left with single right down > * double left down with single right > > and so on... > > With heavy instead of double, such combinations exist. That's a real shame. I looked in the Unicode standard but couldn't find any rationale, only a comment that the box drawing section of Unicode exists for compatibility with historic systems. I guess there wasn't anything out there that used double boxes in this way. https://www.unicode.org/versions/Unicode11.0.0/ch22.pdf > So, should i leave this untouched, or am i missing something? Leave it as is, I guess. But we should document this limitation in tbl(7) since it's non-obvious and seems to have come up multiple times. Or just draw twice as many lines, like groff attempts poorly with doublebox... -- Anthony J. Bentley -- To unsubscribe send an email to tech+unsubscribe@mandoc.bsd.lv