Cthulhu is no longer a fork. Now it is a screen reader written in Golang.

internal/app/speech_presentation.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+package app
+
+import "context"
+
+// revokePresentation drops only the retiring owner's pending speech. If that
+// owner has reached delivery, cancel it through the existing backend barrier
+// while preserving newer core requests behind the barrier. The next delivered
+// request owns backend speech, independently of what is still in the queue.
+func (worker *speechWorker) revokePresentation(owner context.Context) {
+	worker.mutex.Lock()
+	defer worker.mutex.Unlock()
+	retained := worker.pending[:0]
+	for _, request := range worker.pending {
+		if request.presentationGeneration != nil && request.context == owner {
+			completeSpeechRequest(request, context.Canceled)
+		} else {
+			retained = append(retained, request)
+		}
+	}
+	clear(worker.pending[len(retained):])
+	worker.pending = retained
+	if worker.presentationDelivery != owner || !worker.running {
+		return
+	}
+	worker.presentationDelivery = nil
+	if worker.beepCancel != nil {
+		worker.beepCancel()
+	}
+	worker.generation++
+	worker.interrupting = true
+	select {
+	case worker.interrupt <- struct{}{}:
+	default:
+	}
+}