Easier typing for complex equations

[lylythechosenone]

I'd love a few features to make typing complex equations easier:

1. When typing _ immediately adjacent to an expression, automatically make that expression the base for a subscript, and place the cursor in that subscript.
2. When typing / immediately adjacent to an expression (with no space), automatically make that expression the numerator of a fraction and place the cursor in the denominator.
3. When typing ^ immediately adjacent to an expression, automatically make that expression the base for an exponent (superscript), and place the cursor in that exponent.

Basically, I want the input box to function a bit more like desmos's, instead of requiring manual selection and ⌃-based key combinations.

[JerryI]

We have similar shortcuts:

• Ctrl+_ on selected text makes a subscript
• Ctrl+/ on selected makes a fraction
• Ctrl+^ superscript
• Ctrl+2 square root

if you apply it without selecting anything, a blank sequence will be inserted.
It is pretty much was copied from Mathematica.

Then you can navigate with arrows though those things

Making it automatic as in desmos can be dangerous for WL language, since there are many pattern matching sequences or syntax constructions, that will be kinda shadowed by this.

Check this out: https://wljs.io/frontend/Overview#wolfram-language