如何使用emacs prettify-symbols-mode？

问题描述

我有emacs版本25.0，启用 prettify-symbols-mode ，并键入（lambda（）t）但它不会美化。如何使用这种模式？还有什么符号可用，如何配置它？

编辑： scratch buffer and Markdown 模式，但是当我尝试了一个 Emacs-lisp 模式时，它已经过滤，但现在我有一个问号的lambda符号，我该如何解决？

编辑：我问相关问题。

编辑：解决了unicode问题。

解决方案

prettify-symbols-mode 是本地缓冲区。如果要全局启用，请使用 global-prettify-symbols-mode 。

看到可能是因为Emacs找不到包含lambda字符的字体。尝试切换到像DejaVu Sans Mono这样的Unicode支持字体。

我相信只有Lambda才能开箱即用，只有在 emacs -lisp-mode 缓冲区。从启用 prettify-symbols 的缓冲区中检查 prettify-symbols-alist 的值以查看当前替换表。

如果你想添加其他符号的漂亮，你可以这样做，从 Chf prettify-symbols-mode RET

 （add-hook'emacs-lisp-mode-hook 
（lambda（）
（push'（  

I have emacs version 25.0, I enable prettify-symbols-mode, and type (lambda () t) but it doesn't prettify. How do I use this mode? Also what symbols are available and how can I configure it? Any references are appreciated.

Edit: Nothing happened in scratch buffer and Markdown mode, but when I tried in a Emacs-lisp mode, It did prettify, but now I got a question mark instead of the lambda symbol, how do I fix that?

Edit: I asked the related question here.

Edit: This SO question solved the unicode problem.

解决方案

prettify-symbols-mode is buffer-local. If you want to enable it globally, use global-prettify-symbols-mode.

The question mark you are seeing is probably because Emacs can't find a font that contains a lambda character. Try switching to a font with decent Unicode support like DejaVu Sans Mono.

I believe that only Lambda prettifies out of the box, and only in emacs-lisp-mode buffers. Check the value of prettify-symbols-alist from a buffer with prettify-symbols enabled to see the current replacements table.

If you wish to add prettification of other symbols you can do something like this, from C-h f prettify-symbols-mode RET:

(add-hook 'emacs-lisp-mode-hook
          (lambda ()
            (push '("<=" . ?≤) prettify-symbols-alist)))

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