imenu-list如何设置缩进的大小

如图,imenu-list缩进前面是空3个字符,我希望设成前面只空两个字符,这样好统一,除了python以外我在各种major-mode中设置的indent tab width都是2

找着了

(defun imenu-list--depth-string (depth)
  "Return a prefix string representing an entry's DEPTH."
  (let ((indents (cl-loop for i from 1 to depth collect "  ")))
    (format "%s%s"
            (mapconcat #'identity indents "")
            (if indents " " ""))))

这个函数中collect " "这里有两个空格,改成一个就好,不改el源文件看来是设置不了