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21.5 ¥×¥ì¥Õ¥£¥Ã¥¯¥¹¥­¡¼

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(use-local-map (make-sparse-keymap))
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(local-set-key "\C-p" ctl-x-map)
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(key-binding "\C-p\C-f")
    ⇒ find-file
(key-binding "\C-p6")
    ⇒ nil
Function: define-prefix-command symbol

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