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
