//! Shell command parsing: tree-sitter-bash AST, shlex tokenizer, and pipeline types.
//!
//! This module provides three layers:
//!
//! - `shell` — tree-sitter-bash AST walker that decomposes commands into segments,
//! operators, substitutions, and redirections.
//! - `tokenize` — shlex-based word splitting, base command extraction, and env var parsing.
//! - `types` — data types shared between the parser and evaluator.
/// tree-sitter-bash AST walker for compound command splitting.
/// shlex-based tokenization: word splitting, base command extraction, env var parsing.
/// Shared types: [`ParsedPipeline`], [`ShellSegment`], [`Operator`], [`Redirection`].
pub use ;
pub use ;
pub use ;