如何让Emacs显示空格？

Question

如何让Emacs显示空格(如空格,制表符,跳线等).像Kate和Eclipse这样的许多其他编辑器都有这个功能,我发现由于空格和制表符(特别是Python)的混合,看到代码被缩进的时候非常有用.

Answer 1

WhiteSpace模式是一种Emacs次要模式,用于可视化当前缓冲区中的所有空白字符.

以下是直接从Emacs wiki获取的WhiteSpace的截图,

注意:WhiteSpaceMode现在已替换BlankMode

Answer 2

所有可能的设置似乎总结在这里(空白模式)和这里和这里(ShowWhiteSpace)

也:

(if (>= emacs-major-version 22)
  (progn
    ;; Mode to use with Emacs 22
    ;; http://emacswiki.org/cgi-bin/wiki/BlankMode
    (require 'blank-mode)
    ;; Mode not active by default: let's activate it
    (global-blank-mode t)
    ;; ... activate it when text mode where color syntax is not active by default
    (add-hook 'text-mode-hook 'blank-mode-on)
    ;; All invisible chars are shown, except newline char.
    (setq blank-chars '(tabs spaces trailing lines space-before-tab))
    ;; Show only for one color, no mark inserted
    (setq blank-style '(color))
    ;; Use for normal space (not shown)
    (set-face-background 'blank-space-face nil)
    (set-face-foreground 'blank-space-face "black")
    ;; used for non breakable space
    (set-face-background 'blank-hspace-face "PaleGreen")
    (set-face-foreground 'blank-hspace-face "black")
    ;; Used for spaces left of a tab
    (set-face-background 'blank-space-before-tab-face "orange")
    (set-face-foreground 'blank-space-before-tab-face "black")
    ;; Used for tab
    (set-face-background 'blank-tab-face "lemonchiffon")
    (set-face-foreground 'blank-tab-face "black")
    ;; used for extra space at the end of a line
    (set-face-background 'blank-trailing-face "gold")
    (set-face-foreground 'blank-trailing-face "black")
    ;; Used for line too long
    (set-face-background 'blank-line-face "snow2")
    (set-face-foreground 'blank-line-face "black")
  )
  (progn
    ;; For older Emacs prior to version 22.
    ;; http://www.emacswiki.org/cgi-bin/wiki/show-wspace.el
    (require 'show-wspace)
    (add-hook 'font-lock-mode-hook 'show-ws-highlight-tabs)
    (add-hook 'font-lock-mode-hook 'show-ws-highlight-hard-spaces)
    (add-hook 'font-lock-mode-hook 'show-ws-highlight-trailing-whitespace)
  )
)