Clojure 是否有彩色 REPL? [英] Is there a colored REPL for Clojure?

问题描述

我想为 clojure 代码获得一个彩色的 REPL，类似于你可以用 IRB for Ruby 做的事情.

I'd like to get a colored REPL for clojure code, similar to what you can do with IRB for Ruby.

user.clj 是否有任何库或设置可以提供 REPL 的自动着色?

Are there any libraries or settings for user.clj that provide automatic coloring of the REPL?

示例 IRB:

推荐答案

我不知道有什么方法可以使用基本的 Clojure REPL，如 java -cp clojure.jar clojure.main代码>，做语法高亮.但是，如果您使用 Emacs &SLIME(Clojure 社区大部分人选择的开发环境！)，然后您就可以像 clojure-mode 那样使用 SLIME REPL 高亮语法.

I do not know of any way to have the basic Clojure REPL, as started by something like java -cp clojure.jar clojure.main, do syntax highlighting. If, however, you use Emacs & SLIME (the development environment of choice of a great part of the Clojure community!), then you can have the SLIME REPL highlight syntax like clojure-mode does.

首先，您必须从 clojure-mode 函数(在 clojure-mode.el 的顶部定义)中提取一些代码:

First, you'll have to lift some code from the clojure-mode function (defined towards the top of clojure-mode.el):

;;; all code in this function lifted from the clojure-mode function
;;; from clojure-mode.el
(defun clojure-font-lock-setup ()
  (interactive)
  (set (make-local-variable 'lisp-indent-function)
       'clojure-indent-function)
  (set (make-local-variable 'lisp-doc-string-elt-property)
       'clojure-doc-string-elt)
  (set (make-local-variable 'font-lock-multiline) t)

  (add-to-list 'font-lock-extend-region-functions
               'clojure-font-lock-extend-region-def t)

  (when clojure-mode-font-lock-comment-sexp
    (add-to-list 'font-lock-extend-region-functions
                 'clojure-font-lock-extend-region-comment t)
    (make-local-variable 'clojure-font-lock-keywords)
    (add-to-list 'clojure-font-lock-keywords
                 'clojure-font-lock-mark-comment t)
    (set (make-local-variable 'open-paren-in-column-0-is-defun-start) nil))

  (setq font-lock-defaults
        '(clojure-font-lock-keywords    ; keywords
          nil nil
          (("+-*/.<>=!?$%_&~^:@" . "w")) ; syntax alist
          nil
          (font-lock-mark-block-function . mark-defun)
          (font-lock-syntactic-face-function
           . lisp-font-lock-syntactic-face-function))))

然后将其添加到slime-repl-mode-hook:

(add-hook 'slime-repl-mode-hook
          (lambda ()
            (font-lock-mode nil)
            (clojure-font-lock-setup)
            (font-lock-mode t)))

等等，下次您连接到 SLIME REPL 时，您将可以使用 clojure-mode 语法突出显示.如果您也将 SLIME 用于 Common Lisp，您将需要调整它，以便它不会尝试使用 CL 进行 Clojure 高亮显示.此外，这只是第一个近似值；它打破的一件事是提示突出显示(namespace> 东西将不再突出显示).不过，无论如何，我都不是一个熟练的 font-lock 黑客，所以我将就此搁笔.:-)

Et voilà, next time you connect to the SLIME REPL you'll have clojure-mode syntax highlighting available. If you use SLIME for Common Lisp too, you'll want to tweak this so it doesn't try to do Clojure highlighting with CL. Also, this is just a first approximation; one thing it sort of breaks is prompt highlighting (the namespace> thing will not be highlighted anymore). I'm not a proficient font-lock hacker by any stretch of the imagination, though, so I'll leave it at that. :-)

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