Emacs:.emacs 中延迟加载模式的最佳实践? [英] Emacs: Best-practice for lazy loading modes in .emacs?
问题描述
遇到相关文件扩展名时,是否有关于延迟加载模式的最佳实践?
此时我安装了大约 25 种不同的 Emacs 模式,并且启动变得缓慢.例如,尽管准备好 clojure-mode 很好,但我很少使用它,而且我想完全避免加载它,除非我打开一个扩展名为 .clj 的文件.这种懒惰的要求"功能似乎是一般模式配置的正确方法..
我在网上找不到任何东西,所以我自己尝试了一下.
代替:
(需要 'clojure-mode)(需要 'tpl 模式)
我有这个:
(defun lazy-require (ext 模式)(添加钩子'查找文件钩子`(拉姆达()(当(和(字符串缓冲文件名)(字符串匹配 (concat "\." ,ext "\'") 缓冲区文件名))(需要(引用,模式))(,模式)))))(懒惰需要大豆"'大豆模式)(lazy-require "tpl" 'tpl-mode)
这似乎有效(我是 elisp 新手,因此欢迎发表评论!),但我对在网上找不到有关此主题的任何文章感到不安.这是一个合理的方法吗?
你想要的设施叫做 自动加载.clojure-mode
源文件 clojure-mode.el 包括一个评论如何安排:
Is there a best practice around lazily loading modes when encountering a relevant file extension?
At this point I have roughly 25 different Emacs modes installed, and startup has become slow. For example, although it's great to have clojure-mode at the ready, I rarely use it, and I want to avoid loading it at all unless I open a file with extension .clj. Such a "lazy require" functionality seems like the right way do mode configuration in general..
I found nothing online, so I've taken a crack at it myself.
Instead of:
(require 'clojure-mode)
(require 'tpl-mode)
I have this:
(defun lazy-require (ext mode)
(add-hook
'find-file-hook
`(lambda ()
(when (and (stringp buffer-file-name)
(string-match (concat "\." ,ext "\'") buffer-file-name))
(require (quote ,mode))
(,mode)))))
(lazy-require "soy" 'soy-mode)
(lazy-require "tpl" 'tpl-mode)
This seems to work (I'm an elisp newbie so comments are welcome!), but I'm unnerved about finding nothing written about this topic online. Is this a reasonable approach?
The facility you want is called autoloading. The clojure-mode
source file, clojure-mode.el, includes a comment for how to arrange this:
;; Add these lines to your .emacs: ;; (autoload 'clojure-mode "clojure-mode" "A major mode for Clojure" t) ;; (add-to-list 'auto-mode-alist '("\.clj$" . clojure-mode))
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