I’m Japanese. I use GNU Emacs 23.1.92.2
Welcome! – rubikitch
Hi. You might want to compare parenthesis.el with ‘insert-pair’ (in lisp.el). – DrewAdams
Thank you for your comment. and I’m sorry for answering very slowly.
About the difference between parenthesis.el and ‘insert-pair’, (Though it is still few) I wrote to the header of parenthesis.el. – khiker