FOR TESTING:
 Block Ctrl+b, Ctrl+i, and Ctrl+u
Ad hoc testing: Block Ctrl +
 Block Meta+b, Meta+i, and Meta+u (for Mac?)
 Block Alt+f, Alt+v, and Alt+b
 Repurpose the / key
 Convert Ctrl+backspace to delete selection
 Log solo modifier key events (keydown repeats a lot...)
--> Text input: | Flush Log