Built-in shell commands for frost.
Provides a [Builtin] trait, a [ShellEnvironment] trait (so builtins
stay decoupled from the executor), and a [BuiltinRegistry] that maps
command names to their implementations.
Built-in shell commands for frost.
Provides a [Builtin] trait, a [ShellEnvironment] trait (so builtins
stay decoupled from the executor), and a [BuiltinRegistry] that maps
command names to their implementations.