Use Tree-sitter as backend to source code indentation.
indent-line-function that resolves the indentation by looking at the syntax tree using the emacs-tree-sitter package.
First, install emacs-tree-sitter. I recommend using
(straight-use-package '(tree-sitter :host github :repo "ubolonton/emacs-tree-sitter" :files ("lisp/*.el"))) (straight-use-package '(tree-sitter-langs :host github :repo "ubolonton/emacs-tree-sitter" :files ("langs/*.el" "langs/queries"))) ;; Load the language bundle (require 'tree-sitter-langs)
tree-sitter-indent. Recommended way is using
straight.el (no (M)ELPA package currently available).
(straight-use-package '(tree-sitter-indent :type git :repo "https://codeberg.org/FelipeLema/tree-sitter-indent.el.git" :branch "main" :files ("tree-sitter-indent.el")))
So far, only rust language can be indented. Add the following to your
;; install tree-sitter ;; … ;; install tree-sitter-indent ;; … (tree-sitter-require 'rust) (require 'tree-sitter-indent) (add-hook 'rust-mode-hook #'tree-sitter-indent-mode)
Adding languages or fixing current
Currently, julia is work-in-progress as the Tree-sitter implementation is not done. Rust was actually the second language being worked on, which involved a more mature development, so you may want to check those commits.
The best way to work through a language is to add the targets you want to get ("I want this code to be indented like this") as a unit test. And then add code as needed.
PRs are welcome.
To run tests, execute the following
This will byte-compile elisp files and run tests. Byte-compiler warnings will be treated as errors, so make sure to cover them.
make will fetch all dependencies using
straight.el and run.
Code of Conduct
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.