Assuming that r contains XML and this.hardErrors[i] is already escaped for XML safety, that is probably what you'd expect to see a code-generated XML generator doing, as well as hand-generated XML (if generating text directly and not an intermediate abstract representation of the XML).
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Assuming that r contains XML and this.hardErrors[i] is already escaped for XML safety, that is probably what you'd expect to see a code-generated XML generator doing, as well as hand-generated XML (if generating text directly and not an intermediate abstract representation of the XML).