Crate reef 

Reef — bash compatibility layer for fish shell.

Provides bash detection, translation, passthrough execution, and a persistent bash coprocess daemon for seamless bash usage from fish.

Modules

• detect — fast heuristic for identifying bash-specific syntax
• translate — bash-to-fish translation via AST
• parser — recursive-descent bash parser (produces ast nodes)
• ast — zero-copy abstract syntax tree types
• passthrough — bash subprocess execution with environment diffing
• daemon — persistent bash coprocess over a Unix domain socket
• env_diff — environment snapshot capture and diffing
• state — state file persistence for exported variables

Modules

ast

Abstract syntax tree for bash commands.

daemon

Persistent bash coprocess daemon for reef persist full.

detect

Fast bash detection heuristic.

env_diff

Environment snapshot diffing for bash-to-fish variable sync.

lexer

Byte-oriented lexer for bash input.

parser

Recursive-descent parser for bash syntax.

passthrough

Bash command passthrough execution with environment diffing.

state

State file management for reef persist state mode.

translate

Bash-to-fish translator.