Ane, a new chord-based terminal code editor with one-shot CLI edits

No Developing a custom TUI text editor in Rust with custom chord grammar, Tree-sitter incremental parsing, and an asynchronous Language Server Protocol (LSP) client requires deep systems programming and complex state management. AI assistants consistently struggle with the intricacies of terminal rendering (terminal raw mode/ANSI), tree-sitter AST bindings, and bidirectional multi-threaded LSP lifecycle management without human systems-level debugging.

What it would actually take: To build an editor like Ane, one needs Rust with libraries like ratatui/crossterm for the TUI, tree-sitter for incremental AST syntax parsing, and async LSP client infrastructure (e.g., lsp-types over tokio stdin/stdout IPC). The core difficulty lies in low-latency event-driven keyboard chord state machine handling, undo/redo rope data structures (like crop or ropey), and concurrent LSP synchronization without race conditions or UI lag. This demands seasoned systems engineering skills in Rust and deep knowledge of editor internals.