Fork of http://code.google.com/p/smart-highlighting-gedit/ to enable GSettings and refactor a bit.

• Built with GObject Introspection, so works only on Gnome3
• Highlight occurrences of current selected text
• Match occurrences using regular expression
• Highlighting colors and matching options are selectable
• Match occurrences using plain text
• Multi-language support
  • English
  • Chinese

1. Run install.sh to install plugin files, locale files, and GSettings schema file. Without the GSettings schema installed, you cannot configure the colors or other settings.
2. Restart Gedit, then go to Edit->Preferences->Plugins and check the box next to Smart Highlighting.

It's been years since this project was last updated, but I can confirm this plugin still works in gedit 3.18.3, the version that comes with Ubuntu 16.4 LTS.