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-rw-r--r--lisp/progmodes/c-ts-mode.el17
1 files changed, 17 insertions, 0 deletions
diff --git a/lisp/progmodes/c-ts-mode.el b/lisp/progmodes/c-ts-mode.el
index 981c7766375..83e89c3a335 100644
--- a/lisp/progmodes/c-ts-mode.el
+++ b/lisp/progmodes/c-ts-mode.el
@@ -859,6 +859,18 @@ the semicolon. This function skips the semicolon."
(goto-char (match-end 0)))
(treesit-default-defun-skipper))
+(defun c-ts-base--before-indent (args)
+ (pcase-let ((`(,node ,parent ,bol) args))
+ (when (null node)
+ (let ((smallest-node (treesit-node-at (point))))
+ ;; "Virtual" closer curly added by the
+ ;; parser's error recovery.
+ (when (and (equal (treesit-node-type smallest-node) "}")
+ (equal (treesit-node-end smallest-node)
+ (treesit-node-start smallest-node)))
+ (setq parent (treesit-node-parent smallest-node)))))
+ (list node parent bol)))
+
(defun c-ts-mode-indent-defun ()
"Indent the current top-level declaration syntactically.
@@ -904,6 +916,11 @@ the semicolon. This function skips the semicolon."
;; function_definitions, so we need to find the top-level node.
(setq-local treesit-defun-prefer-top-level t)
+ ;; When the code is in incomplete state, try to make a better guess
+ ;; about which node to indent against.
+ (add-function :filter-args (local 'treesit-indent-function)
+ #'c-ts-base--before-indent)
+
;; Indent.
(when (eq c-ts-mode-indent-style 'linux)
(setq-local indent-tabs-mode t))