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

internal/app/ocr_selection.go

@@ -0,0 +1,55 @@
+// Copyright (c) 2026 Storm Dragon
+// Authors: Storm Dragon, Angus Kola
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package app
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Selection is owned by the session's anchor and cursor. Compare ranges in the
+// current document without retaining text or inventing a native object identity.
+func (session *ocrSession) selection_change_locked(oldStart, oldEnd int) string {
+	start, end := session.selection_locked()
+	var changes []string
+	fragment := func(from, to int, selected bool) {
+		if from < 0 || to <= from {
+			return
+		}
+		message := "unselected"
+		if selected {
+			message = "selected"
+		}
+		if to-from <= lineSelectionFragmentLimit {
+			value, _ := session.cursor.Slice(from, to)
+			value = strings.Join(strings.Fields(value), " ")
+			if value != "" {
+				if selected {
+					message = fmt.Sprintf("%s selected", value)
+				} else {
+					message = fmt.Sprintf("%s unselected", value)
+				}
+			}
+		}
+		changes = append(changes, message)
+	}
+	if oldEnd > oldStart {
+		if end <= start {
+			fragment(oldStart, oldEnd, false)
+		} else {
+			fragment(oldStart, min(oldEnd, start), false)
+			fragment(max(oldStart, end), oldEnd, false)
+		}
+	}
+	if end > start {
+		if oldEnd <= oldStart {
+			fragment(start, end, true)
+		} else {
+			fragment(start, min(end, oldStart), true)
+			fragment(max(start, oldEnd), end, true)
+		}
+	}
+	return strings.Join(changes, ", ")
+}