Make tree-sitter based modes optional

* lisp/progmodes/c-ts-mode.el: Update Commentary.  Make
'auto-mode-alist' update conditional on the tree-sitter and
grammar libraries being available.
* lisp/progmodes/cmake-ts-mode.el:
* lisp/progmodes/csharp-mode.el:
* lisp/progmodes/dockerfile-ts-mode.el:
* lisp/progmodes/go-ts-mode.el:
* lisp/progmodes/java-ts-mode.el:
* lisp/progmodes/js.el:
* lisp/progmodes/json-ts-mode.el:
* lisp/progmodes/python.el:
* lisp/progmodes/ruby-ts-mode.el:
* lisp/progmodes/typescript-ts-mode.el:
* lisp/textmodes/css-mode.el:
* lisp/textmodes/toml-ts-mode.el:
* lisp/textmodes/yaml-ts-mode.el: Make 'auto-mode-alist' update
for tree-sitter based modes be conditional on the tree-sitter and
grammar libraries being available.  (Bug#60559)

1 files changed, 6 insertions, 6 deletions

diff --git a/lisp/progmodes/dockerfile-ts-mode.el b/lisp/progmodes/dockerfile-ts-mode.el
index 3f8766e6713..2a295e885b0 100644
--- a/lisp/progmodes/dockerfile-ts-mode.el
+++ b/lisp/progmodes/dockerfile-ts-mode.el
@@ -133,12 +133,6 @@ the subtrees."
       `((,name . ,marker))))))
 
 ;;;###autoload
-(add-to-list 'auto-mode-alist
-             ;; NOTE: We can't use `rx' here, as it breaks bootstrap.
-             '("\\(?:Dockerfile\\(?:\\..*\\)?\\|\\.[Dd]ockerfile\\)\\'"
-               . dockerfile-ts-mode))
-
-;;;###autoload
 (define-derived-mode dockerfile-ts-mode prog-mode "Dockerfile"
   "Major mode for editing Dockerfiles, powered by tree-sitter."
   :group 'dockerfile
@@ -172,6 +166,12 @@ the subtrees."
 
     (treesit-major-mode-setup)))
 
+(if (treesit-ready-p 'dockerfile)
+    (add-to-list 'auto-mode-alist
+                 ;; NOTE: We can't use `rx' here, as it breaks bootstrap.
+                 '("\\(?:Dockerfile\\(?:\\..*\\)?\\|\\.[Dd]ockerfile\\)\\'"
+                   . dockerfile-ts-mode)))
+
 (provide 'dockerfile-ts-mode)
 
 ;;; dockerfile-ts-mode.el ends here