Re: Tree-sitter api

[Theodor Thornhill]

>>> 
>>> What happens is that the arguments list triggers as an indentation step,
>>> but it should only do so when when on its own line.  I believe this is
>>> what SMIE calls "hanging-p" in its engine.
>>
>> I think an anchor preset that finds the parent that’s at the beginning
>> of a line should solve this. I’ll definitely add that one.


So I made this rule which is a good starting point for this, I think.
It's a pretty naive implementation still, but I wanted to share it
nonetheless.

```elisp
(defun ts-parent-until (type)
  (lambda (node parent bol &rest _)
    (when-let ((found-node
                (tree-sitter-parent-until
                 node
                 (lambda (parent)
                   (equal type (tree-sitter-node-type parent))))))
      (save-excursion
        (goto-char (tree-sitter-node-start found-node))
        (back-to-indentation)
        (tree-sitter-node-start
         (tree-sitter-node-at (point) (point) 'tree-sitter-tsx))))))

(defvar ts-tsx-tree-sitter-indent-rules
  `((tree-sitter-tsx
     ((ts-parent-until "statement_block") (ts-parent-until "statement_block") 2)
     (no-node prev-line 0)
     )))
```

This at least marks the start of me understanding how it works, hehe...

Theodor