This project is a toy, mainly for the purposes of learning about integrating Lua into Qt. Maybe someday it will be developed into something useful.

https://doc.qt.io/qt-5/qtwidgets-widgets-codeeditor-example.html

https://stackoverflow.com/questions/2443358/how-to-add-lines-numbers-to-qtextedit

https://doc.qt.io/qt-5/qtwidgets-richtext-syntaxhighlighter-example.html