nxml-mode  (of course:-)

with a schemas.xml entry

<uri pattern="*.xsl" uri="schema/xslt.rnc"/>

and a xslt.rnc that is just

xslt10 = external "xslt10.rnc"
xslt20 = external "xslt20.rnc"
xslt30 = external "schema-for-xslt30.rnc"
start = xslt10 | xslt20 | xslt30


and the three .rnc files referenced come from... er Norm I think:-

oh no it says

# XSLT 3.0 Relax NG Schema
#
# Copyright (c) 2010-2016, Mohamed ZERGAOUI (Innovimax)
#

David







On Sun, 6 Aug 2023 at 10:56, Dave Pawson dave.pawson@xxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Has anyone found such a mode please?
>
> TiA
>
> regards
>
> --
> Dave Pawson
> XSLT XSL-FO FAQ.
> Docbook FAQ.