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(use-package treesit
:if (ignore-errors (treesit-available-p))
:config
(let ((setup-treesit-mode (lambda (parser treesit-mode modes &optional interpreters)
(if (not (treesit-language-available-p parser))
(error "treesit language parser not available for %s" (symbol-name language))
(seq-each (lambda (mode)
(add-to-list 'auto-mode-alist
(cons (rx (literal ".")
(literal mode) eos)
treesit-mode)))
modes)
(seq-each (lambda (interpreter)
(add-to-list 'interpreter-mode-alist
(cons interpreter treesit-mode)))
interpreters)))))
(funcall setup-treesit-mode 'python 'python-ts-mode '("py") '("python" "python3"))
(funcall setup-treesit-mode 'bash 'bash-ts-mode '("sh") '("bash" "sh" "openrc-run"))
(funcall setup-treesit-mode 'rust 'rust-ts-mode '("rs"))
(funcall setup-treesit-mode 'cpp 'c++-ts-mode '("cpp" "cxx" "c++" "hpp" "hxx" "h++"))))
(use-package rust-ts-mode
:requires treesit
:hook
(rust-ts-mode . (lambda ()
(when (require 'rust-mode nil t)
(add-hook 'before-save-hook 'rust-before-save-method nil t)
(add-hook 'after-save-hook 'rust-after-save-method nil t)
(use-local-map (make-composed-keymap (list rust-ts-mode-map rust-mode-map)))))))
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