const github.com/yuin/goldmark/text.invalidValue

4 uses

	github.com/yuin/goldmark/text (current package)
		reader.go#L11: const invalidValue = -1
		reader.go#L417: 	r.SetPosition(r.line+1, NewSegment(invalidValue, invalidValue))
		reader.go#L428: 	if pos.Start == invalidValue {

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