From 24d59b1546d963c2b92f67a8efde951db90182da Mon Sep 17 00:00:00 2001
From: Greg Hendershott <git@greghendershott.com>
Date: Fri, 10 Nov 2023 10:08:40 -0500
Subject: [PATCH] Clamp font-lock-flush positions; fixes #674

---
 racket-hash-lang.el | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/racket-hash-lang.el b/racket-hash-lang.el
index 00cf7de7..837f621d 100644
--- a/racket-hash-lang.el
+++ b/racket-hash-lang.el
@@ -403,7 +403,10 @@ lang's attributes that we care about have changed."
 All we do here is mark the span as not fontified, then let
 jit-lock do its thing if/when this span ever becomes visible."
   ;;;(message "racket--hash-lang-on-changed-tokens %s %s %s" _gen beg end)
-  (font-lock-flush beg end))
+  (save-restriction
+    (widen)
+    (font-lock-flush (max beg (point-min))
+                     (min end (point-max)))))
 
 ;;; Fontification