Route help and version through the reporter

builtins.go

@@ -1,8 +1,6 @@
 package commandkit
 
 import (
-	"bytes"
-	"errors"
 	"fmt"
 	"io"
 	"runtime/debug"
@@ -58,7 +56,7 @@ func (a *App) builtinCommands() []Declaration {
 			if identity.Version == "" {
 				identity.Version = "dev"
 			}
-			return renderVersionOutcome(identity, input.Format, invocation.Streams)
+			return renderVersionOutcome(identity, input.Format, invocation.Reporter())
 		},
 	})
 	return []Declaration{help, version}
@@ -78,78 +76,41 @@ func parseVersionFormat(value string) (string, error) {
 	return value, nil
 }
 
-func (a *App) renderHelpOutcome(path []string, streams Streams) Outcome {
+func (a *App) renderHelpViewOutcomeWithSession(view commandmeta.HelpView, reporter *Reporter, session *internalcobra.Session) Outcome {
-	session := internalcobra.Prepare(a.routeSnapshot().metadata, commandmeta.ParseOptions{})
-	return a.renderHelpOutcomeWithSession(path, streams, session)
-}
-
-func (a *App) renderHelpTargets(targets []string, streams Streams) Outcome {
-	session := internalcobra.Prepare(a.routeSnapshot().metadata, commandmeta.ParseOptions{})
-	return a.renderHelpTargetsWithSession(targets, streams, session)
-}
-
-func (a *App) renderHelpTargetsWithSession(targets []string, streams Streams, session *internalcobra.Session) Outcome {
-	snapshot := a.routeSnapshot()
-	route := resolveEnteredRoute(targets, snapshot)
-	if route.kind == routeUnknown {
-		return a.renderHelpOutcomeWithSession(targets, streams, session)
-	}
-	options := commandmeta.ParseOptions{}
-	switch route.kind {
-	case routeCanonical:
-		options.FlagAliases = snapshot.flagAliases[route.canonicalPath.Key()].neutralRecords()
-	case routeDiscovery:
-		options.FlagAliases = snapshot.discoveryFlags[route.discoveryPath.Key()].neutralRecords()
-	}
-	session = internalcobra.Prepare(snapshot.metadata, options)
-	return a.renderHelpViewOutcomeWithSession(a.helpView(route, snapshot), streams, session)
-}
-
-func (a *App) renderHelpOutcomeWithSession(path []string, streams Streams, session *internalcobra.Session) Outcome {
-	return a.renderHelpViewOutcomeWithSession(commandmeta.HelpView{EnteredPath: path, CanonicalPath: path}, streams, session)
-}
-
-func (a *App) renderHelpViewOutcomeWithSession(view commandmeta.HelpView, streams Streams, session *internalcobra.Session) Outcome {
 	content, failure := session.RenderHelpView(view)
 	if failure != nil {
 		if failure.Usage {
-			return Usage(errors.New(failure.Message))
+			return Usage(failure.Message)
 		}
-		return Failure(errors.New(failure.Message))
+		return Failure(failure.Message)
-	}
-	if err := writeReport(streams.Out, []byte(content)); err != nil {
-		return incompleteReport(err)
 	}
+	_ = reporter.RenderOutput(func(w io.Writer) error {
+		_, err := io.WriteString(w, content)
+		return err
+	})
 	return Success()
 }
 
-func renderVersionOutcome(identity Identity, format string, streams Streams) Outcome {
+func renderVersionOutcome(identity Identity, format string, reporter *Reporter) Outcome {
-	var content []byte
+	if identity.Version == "" {
+		identity.Version = "dev"
+	}
 	switch format {
 	case "text":
-		name := identity.Name
+		line := identity.Name + " " + identity.Version
-		if identity.Version == "" {
-			identity.Version = "dev"
-		}
-		line := name + " " + identity.Version
 		if identity.Revision != "" {
 			line += " (" + identity.Revision + ")"
 		}
-		content = []byte(line + "\n")
+		_ = reporter.RenderOutput(func(w io.Writer) error {
+			_, err := io.WriteString(w, line+"\n")
+			return err
+		})
 	case "yaml":
-		if identity.Version == "" {
+		_ = reporter.RenderOutput(func(w io.Writer) error {
-			identity.Version = "dev"
+			return encodeYAML(w, versionDocument{Name: identity.Name, Version: identity.Version, Revision: identity.Revision})
-		}
+		})
-		var buffer bytes.Buffer
-		if err := encodeYAML(&buffer, versionDocument{Name: identity.Name, Version: identity.Version, Revision: identity.Revision}); err != nil {
-			return Failure(err)
-		}
-		content = buffer.Bytes()
 	default:
-		return Usage(fmt.Errorf("unsupported version format %q", format))
+		return Usage(fmt.Sprintf("unsupported version format %q", format))
-	}
-	if err := writeReport(streams.Out, content); err != nil {
-		return incompleteReport(err)
 	}
 	return Success()
 }
@@ -160,22 +121,6 @@ func encodeYAML(writer io.Writer, document any) error {
 	return encoder.Encode(document)
 }
 
-func writeReport(writer io.Writer, content []byte) error {
-	checked := &checkedWriter{writer: writer}
-	_, err := checked.Write(content)
-	if err == nil {
-		err = checked.failure
-	}
-	return err
-}
-
-func incompleteReport(err error) Outcome {
-	outcome := Failure(err)
-	outcome.ReportIncomplete = true
-	outcome.DeliveryError = err
-	return outcome
-}
-
 func readBuildInfo() *debug.BuildInfo {
 	info, ok := debug.ReadBuildInfo()
 	if !ok {

builtins_reporting_test.go

@@ -0,0 +1,110 @@
+package commandkit
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"strings"
+	"testing"
+)
+
+func builtinReportingTestApp(t *testing.T) *App {
+	t.Helper()
+	command := NewCommand(CommandSpec[struct{}]{
+		Name: "run",
+		Run:  func(Invocation, struct{}) Outcome { return Success() },
+	})
+	app, err := New(Identity{Name: "Example", Version: "1.2.3"}, command,
+		Group("promptkit", "PromptKit", Group("list", "List", simpleRunnable("collections"))),
+		Alias("r", "run"), Alias("list collections", "promptkit list collections"),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return app
+}
+
+func TestHelpAndVersionUseManagedOutput(t *testing.T) {
+	app := builtinReportingTestApp(t)
+	for _, args := range [][]string{{"help", "--quiet"}, {"version", "--quiet"}, {"list", "--help", "--quiet"}} {
+		var output, diagnostics bytes.Buffer
+		outcome := app.Execute(context.Background(), args, Streams{Out: &output, Err: &diagnostics})
+		if outcome.Kind != OutcomeSuccess || outcome.Status != 0 {
+			t.Errorf("Execute(%q) = %#v", args, outcome)
+		}
+		if output.Len() != 0 || diagnostics.Len() != 0 {
+			t.Errorf("Execute(%q) wrote output %q or diagnostics %q", args, output.String(), diagnostics.String())
+		}
+		if outcome.Presentation.Output.State != DeliverySuppressed {
+			t.Errorf("Execute(%q) output presentation = %#v", args, outcome.Presentation.Output)
+		}
+	}
+
+	for _, test := range []struct {
+		args []string
+		want string
+	}{
+		{args: []string{"help", "run"}, want: "run"},
+		{args: []string{"help", "r"}, want: "Alias for: Example run"},
+		{args: []string{"list", "--help"}, want: "Reporting Flags"},
+		{args: []string{"version"}, want: "Example 1.2.3"},
+		{args: []string{"version", "--format=yaml"}, want: "version: 1.2.3"},
+	} {
+		var output, diagnostics bytes.Buffer
+		outcome := app.Execute(context.Background(), test.args, Streams{Out: &output, Err: &diagnostics})
+		if outcome.Kind != OutcomeSuccess || !strings.Contains(output.String(), test.want) {
+			t.Errorf("Execute(%q) = %#v, output %q", test.args, outcome, output.String())
+		}
+	}
+}
+
+func TestHelpAndVersionDestinationFailuresUseReporterObservations(t *testing.T) {
+	app := builtinReportingTestApp(t)
+	writeErr := errors.New("help/version destination failed")
+	for _, args := range [][]string{{"help", "run"}, {"version"}} {
+		var diagnostics bytes.Buffer
+		outcome := app.Execute(context.Background(), args, Streams{
+			Out: executeReportingFailureWriter{err: writeErr}, Err: &diagnostics,
+		})
+		if outcome.Kind != OutcomeOperational || outcome.Status != 1 {
+			t.Errorf("Execute(%q) = %#v", args, outcome)
+		}
+		if !errors.Is(outcome.Presentation.Output.WriteError, writeErr) || outcome.Presentation.Output.State != DeliveryIncomplete {
+			t.Errorf("Execute(%q) presentation = %#v", args, outcome.Presentation)
+		}
+		if !strings.Contains(diagnostics.String(), "ERROR: Command failed.") {
+			t.Errorf("Execute(%q) diagnostics = %q", args, diagnostics.String())
+		}
+	}
+}
+
+func TestInvalidHelpAndVersionRequestsRemainUsageOutcomes(t *testing.T) {
+	app := builtinReportingTestApp(t)
+	for _, args := range [][]string{{"help", "unknown"}, {"version", "--scope=unknown"}, {"version", "--format=unknown"}} {
+		var output, diagnostics bytes.Buffer
+		outcome := app.Execute(context.Background(), args, Streams{Out: &output, Err: &diagnostics})
+		if outcome.Kind != OutcomeUsage || outcome.Status != 2 {
+			t.Errorf("Execute(%q) = %#v", args, outcome)
+		}
+		if !strings.Contains(diagnostics.String(), "Usage: Example") {
+			t.Errorf("Execute(%q) diagnostics = %q", args, diagnostics.String())
+		}
+	}
+}
+
+func TestQuietBuiltinRenderingSuppressesDestinationWrites(t *testing.T) {
+	app := builtinReportingTestApp(t)
+
+	// A quiet successful run must not touch its supplied result destination.
+	var diagnostics bytes.Buffer
+	outcome := app.Execute(context.Background(), []string{"version", "--quiet"}, Streams{
+		Out: executeReportingFailureWriter{err: io.ErrClosedPipe}, Err: &diagnostics,
+	})
+	if outcome.Kind != OutcomeSuccess || outcome.Presentation.Output.State != DeliverySuppressed {
+		t.Fatalf("quiet version outcome = %#v", outcome)
+	}
+	if diagnostics.Len() != 0 {
+		t.Fatalf("quiet version diagnostics = %q", diagnostics.String())
+	}
+}

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Invocation reporting implementation plan
 
-Status: Stages 1–7 complete. Stage 8 is next.
+Status: Stages 1–8 complete. Stage 9 is next.
 
 ## Objective and authority
 
@@ -317,7 +317,7 @@ selection, quiet usage guidance, early errors, and ignored output failures.
 
 ## Stage 8: Migrate help and version presentation
 
-Status: pending.
+Status: complete.
 
 Primary files: [builtins.go](../../builtins.go), help metadata/rendering,
 and built-in consumer tests.
@@ -340,6 +340,13 @@ alias-only discovery, shared reporting flags, invalid help/version requests,
 factory-free behavior, and help/version destination failures. Invalid requests
 remain usage outcomes unless presentation subsequently fails.
 
+Help and version reports now render through the invocation reporter, including
+quiet-mode rendering and destination-failure accounting. Tests cover quiet
+success, canonical and alias help, alias-only discovery, invalid requests, and
+destination failures. The internal suites pass; root-package execution remains
+deferred because the existing external test package still references APIs
+scheduled for the later suite reconciliation.
+
 ## Stage 9: Add core debug events
 
 Status: pending.

execute.go

@@ -166,7 +166,7 @@ func (current *execution) renderHelp(path []string) Outcome {
 	}
 	session := current.presentationSession()
 	view := current.app.helpView(current.route, current.snapshot)
-	return current.app.renderHelpViewOutcomeWithSession(view, current.streams, session)
+	return current.app.renderHelpViewOutcomeWithSession(view, current.reporter, session)
 }
 
 func (current *execution) renderHelpTargets(targets []string) Outcome {
@@ -184,7 +184,8 @@ func (current *execution) renderHelpTargets(targets []string) Outcome {
 	// Discovery routes have no canonical path and retain only trailing options.
 	if route.kind == routeUnknown || len(route.args) != len(route.canonicalPath) {
 		session := internalcobra.Prepare(snapshot.metadata, current.options)
-		return current.app.renderHelpOutcomeWithSession(targets, current.streams, session)
+		view := commandmeta.HelpView{EnteredPath: targets, CanonicalPath: targets}
+		return current.app.renderHelpViewOutcomeWithSession(view, current.reporter, session)
 	}
 	options := current.options
 	switch route.kind {
@@ -195,7 +196,7 @@ func (current *execution) renderHelpTargets(targets []string) Outcome {
 	}
 	session := internalcobra.Prepare(snapshot.metadata, options)
 	view := current.app.helpView(route, snapshot)
-	return current.app.renderHelpViewOutcomeWithSession(view, current.streams, session)
+	return current.app.renderHelpViewOutcomeWithSession(view, current.reporter, session)
 }
 
 func (current *execution) usageLine(path []string) string {

route_test.go

@@ -36,7 +36,7 @@ func TestDiscoveryUsageRetainsEnteredPrefix(t *testing.T) {
 			t.Run(prefix+"/"+test.name, func(t *testing.T) {
 				var output, diagnostics bytes.Buffer
 				outcome := app.Execute(context.Background(), append(strings.Fields(prefix), test.tail...), Streams{Out: &output, Err: &diagnostics})
-				if outcome.Kind != OutcomeUsage || outcome.Status != 2 || outcome.DiagnosticDelivery != DeliveryComplete || output.Len() != 0 {
+				if outcome.Kind != OutcomeUsage || outcome.Status != 2 || outcome.Presentation.Diagnostics.State != DeliveryComplete || output.Len() != 0 {
 					t.Fatalf("outcome = %#v, output %q", outcome, output.String())
 				}
 				for _, fragment := range []string{test.want, "Usage: Demo " + prefix} {
@@ -828,7 +828,7 @@ func TestAliasUsageSurvivesRegistrationDuringExecution(t *testing.T) {
 				Name: "inspect",
 				Run: func(Invocation, struct{}) Outcome {
 					registrationErr = test.register(app)
-					return Usage(errors.New("operation rejected"))
+					return Usage("operation rejected").WithCause(errors.New("operation rejected"))
 				},
 			})
 			var err error