Store attributes in TextKit 1 text storage

[DivineDominion]

NSLayoutManager's temp attributes can't be fonts. So no font weight or italic text for anyone. Instead, store the attributes in the text storage directly.

Since #26 that doesn't cause any extra work:

1. User types
2. Text storage updates and notifies the delegate about character (typed text) + attribute changes (text view typingAttributes)
3. Highlighting is performed
4. Attributes are applied
5. Text storage updates and notifies the delegate about attribute changes
6. Delegate ignores this 👍

Before (TK1 and TK2)	After (TK1)

This applies to TextKit 1 only.

TextKit 2 still looks like 'before'. (Out of scope with the knowledge I have)

Also the weird 'value' font appears to be a "hole" in the grammar. Nothing's applied there. I'm investigating. Works fine with the JS grammar I'm using because everything's something in JavaScript (:

[mattmassicotte]

It is absolutely possible to make a custom interface that does this. These classes are all here just for convenience.

But, I'm not opposed to changing them. Editing like this, and the resulting re-laying, will have performance implications. But I doubt anyone that is seriously concerned about that would be using these.

Do you know what's up with the tests?

[DivineDominion]

Fixed the tests and how to run them locally.

But I doubt anyone that is seriously concerned about that would be using these.

I'm using that approach in The Archive and it works really well for huge notes :)

Am investigating the fallback font still

[mattmassicotte]

I'm using that approach in The Archive and it works really well for huge notes :)

Using these specific Neon classes, I meant! The technique may work just fine!

Though out of curiosity, could you define “huge” for me?

[DivineDominion]

Though out of curiosity, could you define “huge” for me?

Moby Dick (1.1MB file)

[mattmassicotte]

When I do scrolling performance testing, I typically use a 1 million line document. For large file sizes, 100MB-1GB depending on the way it is generated. But it's great to know it can work in that case! I'm not terribly worried.

[mattmassicotte]

Thank you!

[DivineDominion]

1GB 🫣 Ok I'll try that, too.

[mattmassicotte]

While I am curious, but I won't worry about it too much. Again, it only matters when using these specific integrations.