bug#33887: 26.1; Emacs hangs for several seconds when going to the end of an XML file in nXML mode

[Stefan Monnier]

>> Can you summarize the origin of the problem in his example?
>
> <t>>1</t>
>
> (syntax-ppss) on the location of "1" in the above, gives (-1 ...).  And
> then (syntax-ppss) on the "/" will give (0 ...).  So the syntax
> propertize rule for quote use of (zerop (car (syntax-ppss))) no longer
> works correctly to see whether it's inside or outside a tag.
>
> ">" outside of tags should be set to syntax ".", but I would assume that
> adding a syntax-propertize rule which calls syntax-ppss for every ">"
> (to check whether it's inside a tag or not) will be very slow, just like
> calling it for every quote was.

Oh, damn!  Hmm...


        Stefan