完整的common lisp的学习集合整理如下：
https://github.com/GreyZhang/g_lisp
继续学习spacemacs的配置，前面掌握了几个目录相关的函数之后，看一下接下来的一系列目录的定义。
;; paths
(defvar spacemacs-start-directory
user-emacs-directory
"Spacemacs start directory.")
上面定义的这个目录，之前已经确认过了，就是.emacs.d目录。
(defconst spacemacs-core-directory
(expand-file-name (concat spacemacs-start-directory "core/"))
"Spacemacs core directory.")
这个目录是如下目录：
(defconst spacemacs-info-directory
(expand-file-name (concat spacemacs-core-directory "info/"))
"Spacemacs info files directory")
(defconst spacemacs-release-notes-directory
(expand-file-name (concat spacemacs-info-directory "release-notes/"))
"Spacemacs release notes directory")
(defconst spacemacs-banner-directory
(expand-file-name (concat spacemacs-core-directory "banners/"))
"Spacemacs banners directory.")
(defconst spacemacs-banner-official-png
(expand-file-name (concat spacemacs-banner-directory "img/spacemacs.png"))
"Spacemacs official banner image.")
(defconst spacemacs-badge-official-png
(expand-file-name (concat spacemacs-banner-directory
"img/spacemacs-badge.png"))
"Spacemacs official badge image.")
(defconst spacemacs-purple-heart-png
(expand-file-name (concat spacemacs-banner-directory "img/heart.png"))
"Purple heart emoji.")
(defconst spacemacs-cache-directory
(expand-file-name (concat user-emacs-directory ".cache/"))
"Spacemacs storage area for persistent files")
(defconst spacemacs-auto-save-directory
(expand-file-name (concat spacemacs-cache-directory "auto-save/"))
"Spacemacs auto-save directory")
(defconst spacemacs-docs-directory
(expand-file-name (concat spacemacs-start-directory "doc/"))
"Spacemacs documentation directory.")
(defconst spacemacs-news-directory
(expand-file-name (concat spacemacs-start-directory "news/"))
"Spacemacs News directory.")
(defconst spacemacs-assets-directory
(expand-file-name (concat spacemacs-start-directory "assets/"))
"Spacemacs assets directory.")
(defconst spacemacs-test-directory
(expand-file-name (concat spacemacs-start-directory "tests/"))
"Spacemacs tests directory.")
(defconst user-home-directory
(expand-file-name "~/")
"User home directory (~/).")
(defconst pcache-directory
(concat spacemacs-cache-directory "pcache/"))
上面的这个目录，在我当前的目录中没有看到。或许是在配置中并没有用到？后面的进一步分析应该可以分析的出来。
其他的lisp相关的学习笔记汇总，可以参考如下链接：
