Recent updates to tree-sitter branch

[Yuan Fu]

Hi,

I’ve recently made some breaking changes and added some goodies to the 
tree-sitter branch. If anyone have used that branch for … stuff, please have a 
look at these changes:

1. I reworked the tree-traversal functions—moved them from lisp to C, and 
changed their name and signature:

treesit-traverse-depth-first   -> treesit-search-subtree
treesit-traverse-breadth-first ->
treesit-traverse-forward       -> treesit-search-forward
treesit-search-forward         -> treesit-search-forward-goto
treesit-search-beginning/end   -> treesit-search-forward-goto
                               -> treesit-induce-sparse-tree

Treesit-induce-sparse-tree is very good for very quickly extracting a tree 
containing only nodes that satisfy some condition. Maybe it should be called 
treesit-extract-sparse-tree? “Sparse tree” is an invented word, I’m not aware 
of a good terminology for this kind of induced tree.

2. Although treesit-font-lock-settings didn’t change, 
treesit-font-lock-defaults is abandoned. You are also now supposed to use 
treesit-font-lock-rules to build the queries and set it to 
treesit-font-lock-settings. It is much cleaner than setting 
treesit-font-lock-settings manually.

Basically:

(setq treesit-font-lock-defaults ...)

|
V

(setq treesit-font-lock-settings
      (treesit-font-lock-rules
       ...))

3. I removed treesit-defun-query, treesit-beginning/end-of-defun.

That’s it! Happy hacking.

Yuan