* lisp/emacs-lisp/lisp.el (insert-pair-alist): Precompute default value.

Use unicode-property-table-internal with 'paired-bracket to append
pairs of open/close characters to the default value (bug#35480).

1 files changed, 7 insertions, 1 deletions

diff --git a/lisp/emacs-lisp/lisp.el b/lisp/emacs-lisp/lisp.el
index d10d5f0d101..f73dbb269d8 100644
--- a/lisp/emacs-lisp/lisp.el
+++ b/lisp/emacs-lisp/lisp.el
@@ -646,7 +646,13 @@ Interactively, the behavior depends on `narrow-to-defun-include-comments'."
       (narrow-to-region beg end))))
 
 (defvar insert-pair-alist
-  '((?\( ?\)) (?\[ ?\]) (?\{ ?\}) (?\< ?\>) (?\" ?\") (?\' ?\') (?\` ?\'))
+  (append '((?\< ?\>) (?\" ?\") (?\' ?\') (?\` ?\'))
+          (let (alist)
+            (map-char-table
+             (lambda (open close)
+               (when (< open close) (push (list open close) alist)))
+             (unicode-property-table-internal 'paired-bracket))
+            (nreverse alist)))
   "Alist of paired characters inserted by `insert-pair'.
 Each element looks like (OPEN-CHAR CLOSE-CHAR) or (COMMAND-CHAR
 OPEN-CHAR CLOSE-CHAR).  The characters OPEN-CHAR and CLOSE-CHAR