Variable: c-ts-mode-hook

c-ts-mode-hook is a variable defined in c-ts-mode.el.gz.

Value

nil

Documentation

Hook run after entering C mode.

No problems result if this variable is not bound. add-hook automatically binds it. (This is true for all hook variables.)

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/c-ts-mode.el.gz
;;;###autoload
(define-derived-mode c-ts-mode c-ts-base-mode "C"
  "Major mode for editing C, powered by tree-sitter.

This mode is independent from the classic cc-mode.el based
`c-mode', so configuration variables of that mode, like
`c-basic-offset', doesn't affect this mode.

To use tree-sitter C/C++ modes by default, evaluate

    (add-to-list \\='major-mode-remap-alist \\='(c-mode . c-ts-mode))
    (add-to-list \\='major-mode-remap-alist \\='(c++-mode . c++-ts-mode))
    (add-to-list \\='major-mode-remap-alist
                 \\='(c-or-c++-mode . c-or-c++-ts-mode))

in your configuration."
  :group 'c
  :after-hook (c-ts-mode-set-modeline)

  (when (treesit-ready-p 'c)
    ;; Add a fake "emacs-c" language which is just C.  Used for
    ;; skipping FOR_EACH_* macros, see `c-ts-mode--emacs-set-ranges'.
    (setf (alist-get 'emacs-c treesit-load-name-override-list)
          '("libtree-sitter-c" "tree_sitter_c"))
    ;; If Emacs source support is enabled, make sure emacs-c parser is
    ;; after c parser in the parser list. This way various tree-sitter
    ;; functions will automatically use the c parser rather than the
    ;; emacs-c parser.
    (when c-ts-mode-emacs-sources-support
      (treesit-parser-create 'emacs-c))

    (treesit-parser-create 'c)
    ;; Comments.
    (setq-local comment-start "/* ")
    (setq-local comment-end " */")
    ;; Indent.
    (setq-local treesit-simple-indent-rules
                (c-ts-mode--get-indent-style 'c))
    ;; Font-lock.
    (setq-local treesit-font-lock-settings (c-ts-mode--font-lock-settings 'c))
    ;; Navigation.
    (setq-local treesit-defun-tactic 'top-level)
    (treesit-major-mode-setup)

    ;; Emacs source support: handle DEFUN and FOR_EACH_* gracefully.
    (when c-ts-mode-emacs-sources-support
      (setq-local add-log-current-defun-function
                  #'c-ts-mode--emacs-current-defun-name)

      (setq-local treesit-range-settings
                  (treesit-range-rules 'c-ts-mode--emacs-set-ranges))

      (setq-local treesit-language-at-point-function
                  (lambda (_pos) 'c))
      (treesit-font-lock-recompute-features '(emacs-devel)))))