按照 Github 上面配置：
(defhydra hydra-awesome (awesome-map awesome-binding awesome-plist)
awesome-docstring
awesome-head-1
awesome-head-2
awesome-head-3
...)
发现如果直接在 defhydra 定义的时候写map及绑定键，则按下绑定键不会打开hydra菜单，要接着按后续键才会打开菜单，但是在外面用global-set-key就没有问题。
(defhydra hydra-buffer-menu (Buffer-menu-mode-map "." :color pink
:hint nil)
"
^Mark^ ^Unmark^ ^Actions^ ^Search
^^^^^^^^-----------------------------------------------------------------
_m_: mark _u_: unmark _x_: execute _R_: re-isearch
_s_: save _U_: unmark up _b_: bury _I_: isearch
_d_: delete ^ ^ _g_: refresh _O_: multi-occur
_D_: delete up ^ ^ _T_: files only: % -28`Buffer-menu-files-only
_~_: modified
"
("m" Buffer-menu-mark)
("u" Buffer-menu-unmark)
("U" Buffer-menu-backup-unmark)
("d" Buffer-menu-delete)
("D" Buffer-menu-delete-backwards)
("s" Buffer-menu-save)
("~" Buffer-menu-not-modified)
("x" Buffer-menu-execute)
("b" Buffer-menu-bury)
("g" revert-buffer)
("T" Buffer-menu-toggle-files-only)
("O" Buffer-menu-multi-occur :color blue)
("I" Buffer-menu-isearch-buffers :color blue)
("R" Buffer-menu-isearch-buffers-regexp :color blue)
("c" nil "cancel")
("v" Buffer-menu-select "select" :color blue)
("o" Buffer-menu-other-window "other-window" :color blue)
("q" quit-window "quit" :color blue))
;; 在外面绑定就没问题
;; (define-key Buffer-menu-mode-map "." 'hydra-buffer-menu/body)