Add known-to-work version for c/c++-ts-mode

This is done by

    (treesit--verify-major-mode-queries
     '(c-ts-mode c++-ts-mode)
     '(c cpp)
     "/tmp/tree-sitter-grammars")

* lisp/progmodes/c-ts-mode.el: Add comments.

(cherry picked from commit 07cc8abca75e9c0180e993ad10f162c5218c9e5e)

diff --git a/lisp/progmodes/c-ts-mode.el b/lisp/progmodes/c-ts-mode.el
index cf1721d66ee20f7fd465699f57c6a147473262b6..67ccbb8594bfaa5cca94108ec6c1676f722c6dd3 100644 (file)
--- a/lisp/progmodes/c-ts-mode.el
+++ b/lisp/progmodes/c-ts-mode.el
@@ -22,6 +22,18 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
+;;; Tree-sitter language versions
+;;
+;; c-ts-mode is known to work with the following languages and version:
+;; - tree-sitter-c: v0.20.8-61-g3efee11
+;;
+;; c++-ts-mode is known to work with the following languages and version:
+;; - tree-sitter-cpp: v0.20.5-49-gf41b4f6
+;;
+;; We try our best to make builtin modes work with latest grammar
+;; versions, so a more recent grammar version has a good chance to work.
+;; Send us a bug report if it doesn't.
+
 ;;; Commentary:
 ;;
 ;; This package provides major modes for C and C++, plus some handy