emacs - emacs 中有哪些好的自定义键绑定(bind)？

Question

Emacs 似乎已经将所有可能的键盘组合随机分布在它的命令中。 :p

如果我要定义新的键盘快捷键，我应该把它们放在哪里？我应该使用哪些前缀？

例如:我想为以下功能定义快捷方式:

缩进缓冲区(C-c i，在我得到答案后)

注释或取消注释区域 (C-c C)

rdebug (ruby 调试器) (C-c R)

rsense-complete (ruby 自动完成) (C-c e)

你会把这些放在哪里？为什么？

Answer 1

我通常将全局键绑定(bind)放在单独的文件(我的配置的一部分)中，并将特定于模式的配置放在特定于模式的配置文件中。这样一来，一切都变得精简、紧凑且易于找到。您提到的某些内容(例如注释/取消注释)已经附加了键绑定(bind)。我已经使用绑定(bind)到标准 C-M-\缩进键的函数 indent-buffer-or-region(EDT 的一部分)实现了 indent-buffer。对于用户应该为他们的自定义键绑定(bind)使用哪些键，有正式的规则，当然也有常识。没有什么是一成不变的。

以下是来自 Emacs Prelude 的一些示例:

;; You know, like Readline.
(global-set-key (kbd "C-M-h") 'backward-kill-word)

;; Align your code in a pretty way.
(global-set-key (kbd "C-x \\") 'align-regexp)

;; Perform general cleanup.
(global-set-key (kbd "C-c n") 'cleanup-buffer)

;; Font size
(define-key global-map (kbd "C-+") 'text-scale-increase)
(define-key global-map (kbd "C--") 'text-scale-decrease)

;; Jump to a definition in the current file. (This is awesome.)
(global-set-key (kbd "C-x C-i") 'ido-imenu)

;; File finding
(global-set-key (kbd "C-x M-f") 'ido-find-file-other-window)
(global-set-key (kbd "C-x C-M-f") 'find-file-in-project)
(global-set-key (kbd "C-x f") 'recentf-ido-find-file)
(global-set-key (kbd "C-c r") 'bury-buffer)
(global-set-key (kbd "M-`") 'file-cache-minibuffer-complete)

;; Window switching. (C-x o goes to the next window)
(global-set-key (kbd "C-x O") (lambda ()
                                (interactive)
                                (other-window -1))) ;; back one

;; Indentation help
(global-set-key (kbd "C-x ^") 'join-line)
(global-set-key (kbd "C-M-\\") 'indent-region-or-buffer)

;; Start proced in a similar manner to dired
(global-set-key (kbd "C-x p") 'proced)

;; Start eshell or switch to it if it's active.
(global-set-key (kbd "C-x m") 'eshell)

;; Start a new eshell even if one is active.
(global-set-key (kbd "C-x M") (lambda () (interactive) (eshell t)))

;; Start a regular shell if you prefer that.
(global-set-key (kbd "C-x M-m") 'shell)

;; If you want to be able to M-x without meta
(global-set-key (kbd "C-x C-m") 'execute-extended-command)

;; Fetch the contents at a URL, display it raw.
(global-set-key (kbd "C-x C-h") 'view-url)

;; Help should search more than just commands
(global-set-key (kbd "C-h a") 'apropos)

;; Should be able to eval-and-replace anywhere.
(global-set-key (kbd "C-c e") 'eval-and-replace)

;; Magit rules!
(global-set-key (kbd "C-x g") 'magit-status)

;; Activate occur easily inside isearch
(define-key isearch-mode-map (kbd "C-o")
  (lambda () (interactive)
    (let ((case-fold-search isearch-case-fold-search))
      (occur (if isearch-regexp
                 isearch-string
               (regexp-quote isearch-string))))))

;; cycle through buffers
(global-set-key (kbd "<C-tab>") 'bury-buffer)

;; use hippie-expand instead of dabbrev
(global-set-key (kbd "M-/") 'hippie-expand)

;; spell check Bulgarian text
(global-set-key (kbd "C-c B")
                (lambda()(interactive)
                  (ispell-change-dictionary "bulgarian")
                  (flyspell-buffer)))

;; replace buffer-menu with ibuffer
(global-set-key (kbd "C-x C-b") 'ibuffer)

;; interactive text replacement
(global-set-key (kbd "C-c C-r") 'iedit-mode)

;; swap windows
(global-set-key (kbd "C-c s") 'swap-windows)

;; duplicate the current line or region
(global-set-key (kbd "C-c d") 'duplicate-current-line-or-region)

;; rename buffer & visited file
(global-set-key (kbd "C-c r") 'rename-file-and-buffer)

;; open an ansi-term buffer
(global-set-key (kbd "C-x t") 'visit-term-buffer)

;; toggle input method
(global-set-key (kbd "C-\\") 'toggle-bulgarian-input-method)

;; search with google
(global-set-key (kbd "C-c g") 'google)

;; toggle menu-bar visibility
(global-set-key (kbd "<f12>") (lambda () (interactive) (menu-bar-mode)))