Emacs & Tree Sitter

Emacs 29 started some progress in having a built-in tree sitter implementation (treesit).

There are also the packages tree-sitter and tree-sitter-langs. Looks like tree-sitter-langs don’t work with the built-in treesit.

Go¶

Go tree sitter grammar is go-ts-mode:

⛔ Warning (treesit): Cannot activate tree-sitter
because language grammar for go is unavailable (not-found):
~/.emacs.d/tree-sitter/libtree-sitter-go:
cannot open shared object file:
No such file or directory ~/.emacs.d/tree-sitter/libtree-sitter-go.0

Couldn’t find a way to fix that in less than 30 minutes. What did work was to uninstall the external packages tree-sitter and tree-sitter-langs and simply use the built-in treesit.

In emacs, run M-x treesit-install-language-grammar and follow the steps. On my Arch Linux machine I just accepted all the default options and it all worked fine.

Enable it with M-x go-ts-mode RTE, but keep in mind that it replaces go-mode for the buffer, making go-mode key bindings and other goodies to not work any longer (unless we switch back to go-mode with M-x go-mode RET.

Resources and references¶

• https://github.com/casouri/tree-sitter-module
• https://github.com/emacs-tree-sitter/tree-sitter-langs
• emacs-tree-sitter/tree-sitter-langs#163
• https://leba.dev/blog/2022/12/12/(ab)using-straightel-for-easy-tree-sitter-grammar-installations/
• https://archive.casouri.cc/note/2023/tree-sitter-starter-guide/ https://git.savannah.gnu.org/cgit/emacs.git/tree/admin/notes/tree-sitter/starter-guide
• https://github.com/dominikh/go-mode.el