Reuse adapter sessions during execution

internal/cobra/parse.go

@@ -69,6 +69,7 @@ type ParseOptions struct {
 
 // Session owns one mutable backend tree for a single command invocation.
 type Session struct {
+	metadata     *Command
 	root         *spfcobra.Command
 	declarations map[*spfcobra.Command]*Command
 }
@@ -79,11 +80,20 @@ func Prepare(root *Command, options ParseOptions) *Session {
 	if root == nil {
 		return session
 	}
+	session.metadata = root
 	options = normalizeOptions(options)
 	session.root, session.declarations = buildTree(root, options)
 	return session
 }
 
+// Metadata returns the neutral tree used to prepare this session.
+func (session *Session) Metadata() *Command {
+	if session == nil {
+		return nil
+	}
+	return session.metadata
+}
+
 // Parse routes leading command words and parses flags on this session's tree.
 func (session *Session) Parse(argv []string) Result {
 	result := Result{}