I'm using emacs-plus and I had treesitter priorly installed. Other modes like python-ts-mode work fine. However, c++-ts-mode is void and does not exist as a variable. In addition, when I call c++-mode interactively, it is not available (but it is set as the major-mode in *.cpp buffers).
Has anyone experienced this issue and knows of a fix?
I suggest to use this package to solve major problems with treesit. If your grammars are correctly installed go further, if not, follow the indications on that page. If you have treesitter, it will be a good idea to remove it, since the package above make use of built-in treesit. What you need to add further is the below snippet, to reckognize the file types and start the c++-ts-mode hook:
(add-to-list 'auto-mode-alist '("\\(\\.ii\\|\\.\\(CC?\\|HH?\\)\\|\\.[ch]\\(pp\\|xx\\|\\+\\+\\)\\|\\.\\(cc\\|hh\\)\\)\\'" . c++-ts-mode)) ;; optional (add-hook 'c++-ts-mode-hook 'lsp-deferred) (add-hook 'c++-ts-mode-hook #'highlight-indent-guides-mode) Then open a .cpp file and verify the major mode with C-h m.
C-h fto check the defintion. Paste something from the resulting buffer into your question.c++-ts-mode is an autoloaded interactive Lisp function in ‘c-ts-mode.el’for the first andc++-mode is an autoloaded interactive subr-native-elisp in ‘cc-mode.el’.for the second. So something is screwy with your setup. What version of Emacs are you running?c++-ts-modenot existing andc++-modenot being available interactively are the two most prominent. It's on a M1 Pro Macbook.M-x emacs-versionand add it to your question.