From 3fcbcc61db31e316115364cf6275effcbfdebc6f Mon Sep 17 00:00:00 2001 From: Stefan Monnier Date: Sat, 13 Aug 2022 11:18:40 -0400 Subject: [PATCH] js.el: Tweak last change * lisp/progmodes/js.el (js-json-mode): Use a function as value of `syntax-propertize-function`. --- lisp/progmodes/js.el | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/lisp/progmodes/js.el b/lisp/progmodes/js.el index d2c24a75810..efad3b52aa9 100644 --- a/lisp/progmodes/js.el +++ b/lisp/progmodes/js.el @@ -3490,9 +3490,10 @@ This function is intended for use in `after-change-functions'." ;;;###autoload (define-derived-mode js-json-mode js-mode "JSON" - ;; JSON files can be big. Speed up syntax-ppss. - (setq-local syntax-propertize-function nil) - (setq-local js-enabled-frameworks nil)) + (setq-local js-enabled-frameworks nil) + ;; Speed up `syntax-ppss': JSON files can be big but can't hold + ;; regexp matchers nor #! thingies (and `js-enabled-frameworks' is nil). + (setq-local syntax-propertize-function #'ignore)) ;; Since we made JSX support available and automatically-enabled in ;; the base `js-mode' (for ease of use), now `js-jsx-mode' simply -- 2.39.5