* lisp/treesit.el (treesit--after-change): New function.

(treesit-major-mode-setup): Set 'outline-minor-mode-hook'
to add 'treesit--after-change' with 'treesit-update-ranges'
to 'after-change-functions' (bug#77256).

1 files changed, 14 insertions, 1 deletions

diff --git a/lisp/treesit.el b/lisp/treesit.el
index 888f067e0cc..8e57a6dae14 100644
--- a/lisp/treesit.el
+++ b/lisp/treesit.el
@@ -4068,6 +4068,10 @@ For BOUND, MOVE, BACKWARD, LOOKING-AT, see the descriptions in
 
     level))
 
+(defun treesit--after-change (beg end _len)
+  "Force updating the ranges after each text change."
+  (treesit-update-ranges beg end))
+
 ;;; Hideshow mode
 
 (defun treesit-hs-block-end ()
@@ -4362,7 +4366,16 @@ before calling this function."
       (setq treesit-outline-predicate
             #'treesit-outline-predicate--from-imenu))
     (setq-local outline-search-function #'treesit-outline-search
-                outline-level #'treesit-outline-level))
+                outline-level #'treesit-outline-level)
+    (add-hook 'outline-minor-mode-hook
+              (lambda ()
+                (if (bound-and-true-p outline-minor-mode)
+                    (add-hook 'after-change-functions
+                              #'treesit--after-change
+                              0 t)
+                  (remove-hook 'after-change-functions
+                               #'treesit--after-change t)))
+              nil t))
 
   ;; Remove existing local parsers.
   (dolist (ov (overlays-in (point-min) (point-max)))