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Re: The illusion of simplicity and low cost in data design and

• From: Marcus Reichardt <u123724@gmail.com>
• To: "Liam R. E. Quin" <liam@fromoldbooks.org>
• Date: Mon, 15 Aug 2022 09:31:00 +0200

SGML has elements with CDATA declared content for that.

Those stop at what looks like an end-element tag ie. "</" + a name start char.

Best,
Marcus
sgml.io

> Am 15.08.2022 um 05:49 schrieb Liam R. E. Quin <liam@fromoldbooks.org>:
> 
> On Mon, 2022-08-15 at 11:49 +1000, Rick Jelliffe wrote:
>> I don't recall a way to say that some element's content uses a
>> notation, in XML. 
> 
> [[
> A NOTATION attribute identifies a notation, declared in the DTD with
> associated system and/or public identifiers, to be used in interpreting
> the element to which the attribute is attached.
> ]]
> 
> 
> Notation also applies to external non-parsed entities, but in a Web
> environment it's the server that tells the parser, via HTTP headers,
> the format of the resource, and not the document author. So XML's NDATA
> entities are not a good fit for the Web.
> 
> We don't really have an equivalent of Markdown-style
> ```sh
> #! /bin/sh
> echo goodbye && exit 1
> ```
> 
> where the "sh" on the first line identifies (poorly) the format, e.g.
> for the purpose of syntax highlighting, but a notation attribute is
> close. The main difference is that markdown processing is suspended
> between the ``` marks, whereas an XML document must be well-formed even
> if elements declared as having an associated notation were not so
> declared. E.g. you can't put a stray & in element content even if it's
> in a declared non-XML notation.
> 
> In retrospect if we'd done this better, we could have largely dispensed
> with CDATA sections --
> <example format="xml-as-text">
>   <p>should be able to put anything here except an example end-tag,
>   & not get an error</p>
> </example>
> 
> But we didn't...
> 
> liam
> 
> 
> -- 
> Liam Quin, https://www.delightfulcomputing.com/
> Available for XML/Document/Information Architecture/XSLT/
> XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
> Barefoot Web-slave, antique illustrations:  http://www.fromoldbooks.org
> 
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• References:
  • Re: The illusion of simplicity and low cost in datadesign and computing
    • From: "Liam R. E. Quin" <liam@fromoldbooks.org>