Tree-sitter grammar for ixml

Hello,

Since Emacs 29 has introduced support for tree-sitter, I’ve taken a
keener interest :-)

My first humble foray into a tree-sitter grammar for Invisible XML
(which would, for example, enable accurate syntax highlighting in
tree-sitter-aware editors) is here:

  https://github.com/nineml/tree-sitter-ixml/

I know almost nothing about tree-sitter, so caveat forker.

It’s got a couple of actual bugs and I haven’t been able to make it
syntax highlight anything successfully yet, but it was an amusing
diversion on Sunday afternoon. I’ll come back to it again when I
understand (or understand how to understand) tree-sitter a little
better.

Comments, suggestions, and pull requests most welcome!

                                        Be seeing you,
                                          norm

--
Norm Tovey-Walsh
Saxonica