Re: [xml-dev] Quiz: is this XML well-formed?

[Arjun Ray <arayq2@gmail.com>]

On Thu, 4 Feb 2021 18:18:07 +0000, you wrote:

| No! It is not well-formed. There must be a space before reference="AGL" 
| like so:
| 
| <altitude units="meters" reference="AGL">1000</altitude>
| 
| But, but, but, ... Why is space required between attributes? Surely a 
| parser can recognize the start of the next attribute given the 
| end-delimiter of the previous attribute's value, yes?

Yes, a parser should be able to.

BTW, the space is not required in SGML when the end of an attribute
specification is clear.  See productions 31-35 here:

https://www.w3.org/MarkUp/SGML/productions.html