fix(undo/redo): textarea undo/redo; italics, highlight, underline, strikethrough #717

[arkRedM]

No description provided.

[tangjeff0]

Woweee

[arkRedM]

Basic formatting and cmd z behavior are addressed in this patch.
This is not related to undo/redo a txn at all. What user was experiencing was not at all an issue with txn undo.
Maybe move the bounty to another issue?

[tangjeff0]

@arkRedM oh you're that's a separate issue, however, undo/redo should be implemented as a tx log. The current approach holds onto the entire last 10 db values, and drops and resets on undo/redo. This is extremely slow for big dbs - takes ~2 seconds for mine at the point.

I also think it's the basis for RTC, in terms of using a tx log.

[arkRedM]

I also think it's the basis for RTC, in terms of using a tx log.

That's the reason I started with this issue as well 😆, quickly discovered that's unrelated to current bug. But I was already knee-deep, the only way out is to leave the patch in an ideal state -- hence added a few qol features while also fixing the root issue

[tangjeff0]

CC #649 @dauberd @avidrucker

[tangjeff0]

Great idea to use ctrl-T instead of ctrl-H. H always led to weird behavior.