Variable: insert-pair-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
of the pair whose key is equal to the last input character with
or without modifiers, are inserted by `insert-pair'.