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Re: and nXML mode
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From: |
Stefan Monnier |
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Subject: |
Re: and nXML mode |
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Date: |
Wed, 11 Aug 2021 01:45:22 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
>> Is there a reason why nXML mode refuses to consider entities as
>> legit in a document that starts with:
>>
>> <!DOCTYPE html>
>> <html xmlns="http://www.w3.org/1999/xhtml";>
>
> If you view that as an XML document (which is what nXML deals with),
> without any preconceived knowledge of HTML5, there is nothing to
> suggest that is legit.
>
> In XML, an entity can be defined inline within the doctype declaration:
>
> <!DOCTYPE html [
> <!ENTITY nbsp "&#a0;">
> ]>
My understanding is that XML wants to be "parsable" without knowing
anything about the schema being used, and that this notion of parsing
includes conversion of `&<foo>;` entities, so basically XML only allows
the 4 or 5 predefined/builtin entities and that's it.
> <!ENTITY nbsp " " ><!-- no-break space = non-breaking
> space, U+00A0 ISOnum -->
I thought the recommended way to "do &bnsp;" in XML is to use an
actual NBSP character (because XML can use utf-8).
Stefan