Now that I have a nice design for a text editor widget, I've been putting it through its paces, particularly for ideas like syntax highlighting and something I call "syntax geometry". Here's a kinda whimsical toy where '+' flips the direction of writing from horizontal to vertical and vice versa.

I only had to put this rule in in one place, and all my support for editing, moving and clicking on the screen to position the cursor continues to work.

(I did need to generalize a couple of things to get to this point.)

This post is part of my Freewheeling Apps Devlog.

Comments gratefully appreciated. Please send them to me by any method of your choice and I'll include them here.