原文连接：http://blog.sina.com.cn/s/blog_7a9c930d01017i2h.html
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查了好多资料，最后发现一个命令就能够搞定～～
[安装]
输入下面的命令：
$sudo apt-get install gedit-plugins
会安装下面的插件：
* Show/Hide Tabbar: Add a menu entry to show/hide thetabbar.
* Bracket Completion: Automatically adds closingbrackets.
* Draw Spaces: Draw Spaces and Tabs
* Embedded Terminal: Embed a terminal in the bottompane.
* Color Picker: Pick a color from a dialog and insert itshexadecimal representation.
* Session Saver: Save and restore your workingsessions
* Join/Split Lines: Join several lines or split longones
* Smart Spaces: Forget you’re not usingtabulations.
* Character Map: Insert special characters just by clicking onthem.
* Code comment: Comment out or uncomment a selected block ofcode.
插件（Draw Spaces）就是咱们须要的。
[配置]
打开Gedit，点击“edit”->"preferences"->"plugins"。
找到“Draw Spaces”选项，选中，并点击“configure plugin”，在弹出的窗口中选择“Draw newlines”。
OK！
session