[omnicognate]

This accepts the idea that the flickering problem (which is what that comment was about) is to do with slow rendering. It isn't.

The solution to the flickering is almost certainly trivial and it's in the open source Ink library that Claude Code uses. I outlined it in [1].

Basically, Ink clears lines before rendering the page. That's not how you render TUIs if you don't want them to flicker. All you have to do is write the lines, and include a clear to end-of-line at the end of each one. That means you overwrite what's there and only erase what is removed. Where nothing changes, nothing visibly happens. My comment [1] contains links to the source that needs changing, and I think it would probably be a single-digit line PR to fix it. I'm not going to do so because I neither use Claude Code nor really approve of it.

It's hilarious that the quoted comment framed the issue as if it's rendering to a vsynced framebuffer and only has 16ms to do so, and everyone went with it. That's not how TUIs work at all. It's writing to stdout, ffs.

[1] https://news.ycombinator.com/item?id=46853395