Emacs:无法自动启动通过 MELPA 安装的弹丸

Question

我对emacs相当陌生。事实上，我正在学习编辑器并尝试设置一些可以复制“转到项目内的文件”功能的东西，这些功能来自 Code::Blocks 或 notepad++ 的某些插件。

'projectile' 满足了这个需求，我通过 MELPA 安装了它。软件包安装正确，因为我可以使用 M-x projectile-global-mode 启动它和 C-c p命令被识别。

但是，如果我将其放入我的 .emacs文件，Emacs 以错误开始:

Symbol's function definition is void: projectile-global-mode

我的 .emacs 的内容文件如下:

(custom-set-variables
  ;; custom-set-variables was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
 )
(custom-set-faces
  ;; custom-set-faces was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
 )
(global-whitespace-mode 1)
(global-linum-mode 1)

(require 'package)
(add-to-list 'package-archives
  '("melpa" . "http://melpa.milkbox.net/packages/") t)

(projectile-global-mode 1)

当我尝试 (require 'projectile)首先，我只得到另一个错误:

 'File error: Cannot open load file, projectile'

我正在使用 Emacs 24.3.1。

如何正确地将其设置为自动启动？

Answer 1

默认情况下，Emacs 初始化包 之后 评价 init.el .因此，在标准设置中，软件包尚不可用，而 init被评估。

使用(add-hook 'after-init-hook #'projectile-global-mode)仅在包初始化后启用 Projectile，或在 init.el 开头显式初始化包使用以下代码:

(require 'package)
(setq package-enable-at-startup nil) ; To avoid initializing twice
(package-initialize)