helix-editor/helix — reverse-engineered prompt

Build me a fast terminal code editor in Rust that feels like a modern mix of Kakoune and Neovim. I want true modal editing with clear normal and insert behavior, strong keyboard driven workflows, and support for multiple selections so editing repeated text is easy. It should have built in language intelligence for common programming languages, plus smart syntax highlighting and code aware editing that updates as you type.

Make it feel polished enough to actually use every day in the terminal, with a clean text UI, sensible defaults, themes, and easy configuration for languages and editor behavior. Please include the core editing experience, file opening and saving, search, basic navigation, and a solid keymap that matches the modal approach. If there are language specific features or indentation rules, wire them up where supported and keep the rest graceful.

Basically, I want a usable post modern terminal editor, not a toy demo. Check the current Helix docs online if you need details on expected behavior.