emacs-29 da2e440462b 1/2: ruby-ts-mode: Fix an out-of-bounds error with heredoc at eob

[Dmitry Gutov]

branch: emacs-29
commit da2e440462b643427de94433f5e8d0e1330c7450
Author: Dmitry Gutov <dmitry@gutov.dev>
Commit: Dmitry Gutov <dmitry@gutov.dev>

    ruby-ts-mode: Fix an out-of-bounds error with heredoc at eob
    
    * lisp/progmodes/ruby-ts-mode.el (ruby-ts--syntax-propertize):
    Fix an out-of-bounds error with heredoc at eob.
---
 lisp/progmodes/ruby-ts-mode.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/progmodes/ruby-ts-mode.el b/lisp/progmodes/ruby-ts-mode.el
index a30131aad89..843f468e2a1 100644
--- a/lisp/progmodes/ruby-ts-mode.el
+++ b/lisp/progmodes/ruby-ts-mode.el
@@ -1063,8 +1063,9 @@ leading double colon is not added."
         ('heredoc
          (put-text-property (treesit-node-start node) (1+ (treesit-node-start 
node))
                             'syntax-table (string-to-syntax "\""))
-         (put-text-property (treesit-node-end node) (1+ (treesit-node-end 
node))
-                            'syntax-table (string-to-syntax "\"")))
+         (when (< (treesit-node-end node) (point-max))
+           (put-text-property (treesit-node-end node) (1+ (treesit-node-end 
node))
+                              'syntax-table (string-to-syntax "\""))))
         ('percent
          ;; FIXME: Put the first one on the first paren in both %Q{} and %().
          ;; That would stop electric-pair-mode from pairing, though.  Hmm.