raphlinus

Yes, and I'm quite proud of how that turned out. It's using linear sRGB color space, so colors are blended with correct gamma, and dual source blending for the LCD subpixel stuff. It's …

That is correct. I'm measuring scrolling at low to medium speeds, where the majority of the text hasn't changed (this also corresponds to most editing tasks). I don't want to make the c…

Definitely the standard modeless text editing model (with multiple cursors though) as the default, and vi-compatible modes as an option. The issue for the latter is linked elsethread.

The xi-gtk frontend is in pretty good shape, but overall the editor is not _quite_ at the point where I'd recommend it for daily use. I don't want to make a promise of a particular date, but…

I'll have to try this out. My experiments indicated that DirectWrite could not keep up with drawing on a 4k monitor at 60 Hz, though was ok at a smaller window. I think it might depend a lot on d…

Indeed. I was hoping to put more effort into xi-win than it's gotten, but for a variety of reasons have decided to focus on the macOS front end for now, as there's quite a bit of work remain…

I haven't started measuring it yet, but plan to. The idea of keeping the UI component light and doing all the heavy lifting in the core _might_ work well in Electron (as opposed to having all the…

At the rate we're going, it will be a while. It takes time, and I'm trying to get the right answers rather than racing toward shipping. It's a very different environment than a product-…

Not specifically, but I did dig deep into the state syncing literature in general, both Operational Transforms and CRDT's. The problem we're trying to solve is a bit different than mosh, bec…

I don't want to knock either, they're both obviously great editors. My main goal is to build something that feels entirely like a native app. Also, I'm hoping that the async model for p…

Nope, it's Arc for exactly that reason, though we're not currently using it across threads right now. The fact that it can support immutable semantics safely is one of the really nice featur…

Hey, stay on thread! Thanks for the kind words though.

"Easy" is not the right word for this, but it's possible. One challenge is that browsers don't export an interface for "shaping". For Latin script, that means kerning and…

I wanted something short, and it felt kinda futuristic. The similarity to "vi" was also intentional.

It's still a work in progress, we're revving the plug-in protocol. I'm looking forward to the time we can point people to a stable interface, but sadly it's not there yet.

I believe xi-rope counts as a persistent data structure. We have plug-ins in separate processes now, for isolation, but might explore having them in-process but in separate threads. The underlying dat…

You mean Rust? Yes. However (and I didn't get into this in the talk), I actually feel that if I figure out proper async _protocols_ that express rich functionality in neatly composable modules, t…

Universal out-of-the-box support in almost every language. The actual performance impact is subtle - for most core/front-end interactions, the messages are very small (because we put so much effo…

Presenter here, feel free to ask questions. Also thanks to the awesome Recurse Center for inviting me to speak and making the recording, and the audience for their great questions.

Yes, you're missing something. Radix sort, like most sorting algorithms, requires storing the intermediate results in memory. This problem seems impossible at first blush because storing 1 millio…

Yes, this is a problem that requires careful specification. You only get streaming access to your input, not random.

No, that's not a requirement, as it turns out, though of course it would decrease the entropy even further.

This is quite related to the problem of sorting a million 32 bit integers using only 2M of RAM (and no disk). It can be done.

It all depends how you count. I consider the total cost of adopting a dependency the size of Skia to be quite a bit more than the lines of code written; I would have had to write _some_ code to do the…

I did not write Cairo, I wrote libart, and that was a long time ago. I'm good friends with several of the Skia authors, but don't actively work on it myself.

For xi-editor I considered Skia but ultimately decided to write my own OpenGL renderer. I think Skia would have worked, but the dependency was heavyweight and I'm able to tweak my renderer (for e…

My feelings are hurt! Nah, just kidding. An example of the kind of thing that might change, the current stdlib mutex implementation currently depends on pthread mutex objects, which can't be safe…

There were a few other things going on, but mostly I've taken xi editor forward. It's still almost at the point where you'd want to use it for your daily work, but not there just yet.…

Yes, this is in the front end, not the core. My current implementation is in Swift, using OpenGL, but I'm contemplating writing a cross-platform one as well (maybe Rust/Vulkan because that w…

My parts list is here: http://a.co/fltiKey , and the light sensor is one of those Chinese MH-Sensor-Series Flying Fish with a photodiode. The difference between space and '#'…