Elisp里有啥函数可以快速修改列表里的值？

Emacs-general
1

Pyim里的标点保存在一个变量里。Elisp里有啥函数可以快速修改列表里的值。

(defcustom pyim-punctuation-dict
  '(("'" "‘" "’")
    ("\"" "“" "”")
    ("_" "―")
    ("^" "…")
    ("]" "】")
    ("[" "【")
    ("@" "◎")
    ("?" "？")
    (">" "》")
    ("=" "＝")
    ("<" "《")
    (";" "；")
    (":" "：")
    ("/" "、")
    ("." "。")
    ("-" "－")
    ("," "，")
    ("+" "＋")
    ("*" "×")
    (")" "）")
    ("(" "（")
    ("&" "※")
    ("%" "％")
    ("$" "￥")
    ("#" "＃")
    ("!" "！")
    ("`" "・")
    ("~" "～")
    ("}" "』")
    ("|" "÷")
    ("{" "『"))
  "标点符号表."
  :group 'pyim
  :type 'list)
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2 
(let ((l '(("foo" "bar"))))
  (setf (cdr (assoc "foo" l)) '("quux"))
  l)
;; => (("foo" "quux"))
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