rustic-analyzer-macro-expand fails when Rustic uses the tree-sitter Rust mode

[yoav-za]

This issue occurs because rustic-macro-expansion-mode tries to reference non tree-sitter font locking data:

rustic/rustic-lsp.el

Lines 159 to 164 in c1e1d5d

	(setq-local font-lock-defaults
	'(rust-font-lock-keywords
	nil nil nil nil
	(font-lock-syntactic-face-function
	. rust-mode-syntactic-face-function)))
	)

Error trace:

Debugger entered--Lisp error: (void-function rust-syntax-propertize)
  rust-syntax-propertize(1 1)
  syntax-propertize(1)
  font-lock-default-fontify-syntactically(1 1 nil)
  font-lock-fontify-syntactically-region(1 1 nil)
  font-lock-default-fontify-region(1 1 nil)
  font-lock-fontify-region(1 1)
  font-lock-after-change-function(1 1 64)
  rustic-analyzer-macro-expand("{\n    std::io::_print(std::format_args_nl!(\"Hello,...")
  lsp-rust-analyzer-expand-macro()
  funcall-interactively(lsp-rust-analyzer-expand-macro)

Happens on Emacs 29 with a recent rustic version c1e1d5.

[CeleritasCelery]

I am not sure what the tree-sitter equivalent of syntax-propertize-function, but if we can find that, we can replace it in the function when tree sitter is being used. In the meantime you can (require 'rust-mode) to load this function.