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

internal/atspi/text_attributes.go

@@ -0,0 +1,18 @@
+// Copyright (c) 2026 Storm Dragon
+// Authors: Storm Dragon, Angus Kola
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package atspi
+
+// TextAttributesMisspelled recognizes provider spelling markers for native
+// snapshots, character-attribute speech, and braille. Python Cthulhu also
+// recognizes the error/spelling underline values used by some toolkits.
+func TextAttributesMisspelled(values map[string]string) bool {
+	for _, key := range []string{"invalid", "invalid-spelling", "text-spelling", "spelling"} {
+		value := values[key]
+		if value == "spelling" || key != "invalid" && (value == "true" || value == "misspelled") {
+			return true
+		}
+	}
+	return values["underline"] == "error" || values["underline"] == "spelling"
+}