Another update for whoever cares about this text editor that no one cares:

The cursor (which is now a block instead of underscore like before) is now finally functional, but is quite flawed (e.g. If you type two lines with the first line is longer than the second, there's a chance that the cursor might jump to the end of the first line). There's also some text that greets you when you first open the editor, but it will be hidden when you start typing in Insert mode.