RSyntaxTextArea is a syntax highlighting text component written in Swing.
Here's what's new in 1.2.3:
1. Added "Mark Occurrences." When the caret comes to rest on a new identifier or variable, all occurrences of that identifier or variable will be highlighted. There is an API to toggle this feature on or off.
2. Added hyperlink support to C#.
3. Updated regex searching so '^' and '$' match the beginning and end of lines, respectively.
4. Fixed an issue preventing RTextArea from being serializable.