cmd

type Command struct {
	Alias string
	Group string

	Help       string
	Definition string

	RenderCheckCmd func(ctx context.Context) *exec.Cmd

	SetExecFlags  func(f *flag.FlagSet)
	RenderExecCmd func(ctx context.Context, f *flag.FlagSet, args ...interface{}) (*exec.Cmd, error)
}

type CommandDefinition struct {
	InputPath            string
	DeclaretionLineStart int

	Source           []byte
	Name             string
	HeadingStart     int
	HeadingStop      int
	HelpStart        int
	HelpStop         int
	DeclarationStart int
	DeclarationStop  int
	Declaration      *mdast.FencedCodeBlock
}

type ShellCommand struct {
	Exports map[string]*ShellValue
	Locals  map[string]*ShellValue

	LocalDeclarations map[string]*syntax.ParamExp

	File *syntax.File
}

type ShellValue struct {
	Literal    string
	Expression string
}