bug#58711: Treesit hangs when calling treesit-search-forward

[Yuan Fu]

> 
> Thanks, I would need some time to have a proper look. The reporting issue 
> seems to have been fixed. There are some complications to identify the 
> appropriate node for defun in elixir as a "call" node might, or might not be 
> defun, depending on its child identifier ( i currently have to do a query on 
> cycling up the parent ), but will try the respond in more detail in another 
> thread.  

While fixing the hanging issue, I also improved treesit-beginning-of-defun, 
which now first goes backward to find a node that matches 
tresit-defun-type-regexp, then goes upward and finds the top-most parent 
matching treesit-defun-type-regexp, IOW, it now only stops at top-level defun 
matches. Does that help with your case?

Yuan