This plugin allows to quickly show and hide white spaces in the editor without having to go to system properties. It does not touch your code. Freeware offered as is. Use at your own risk. The author is not responsible for any damage resulting from using this plugin.
Recent change notes
Sept. 09, 2013 - fix for taking in account editors that are not part of the main tabs.
Sept. 06, 2013 - initial release on IntelliJ 12.1.4
General usage instructions
A "Toggle whitespace" menu item is added to IntelliJ's "Tools" menu. For ease of use create a toolbar button pointing to the plugin.