Make normaliz anchors option true by default + fix nil pointer condition

Author: AryaHassanli

disco/option.go

@@ -19,7 +19,7 @@ type DiscoOptions struct {
 	RemoveExtraSpaces             bool `default:"true" aliases:"removeExtraSpaces" help:"remove extraneous spaces" group:"Discoballing:"`
 	NormalizeFeatureNames         bool `default:"true" aliases:"normalizeFeatureNames" help:"correct invalid feature names" group:"Discoballing:"`
 	DisambiguateConformanceChoice bool `default:"true" aliases:"disambiguateConformanceChoice" help:"ensure conformance choices are only used once per document" group:"Discoballing:"`
-	NormalizeAnchors              bool `default:"false" aliases:"normalizeAnchors" help:"rewrite anchors and references without labels" group:"Discoballing:"`
+	NormalizeAnchors              bool `default:"true" aliases:"normalizeAnchors" help:"rewrite anchors and references without labels" group:"Discoballing:"`
 	RemoveMandatoryFallbacks      bool `default:"true" aliases:"removeMandatoryFallbacks" help:"remove fallback values for mandatory fields" group:"Discoballing:"`
 	RenameSections                bool `default:"false" help:"rename sections to disco-ball standard names" group:"Discoballing:"`
 	XrefStyleOnlyInRoot           bool `default:"true" aliases:"xrefStyleOnlyInRoot" help:"enforce xrefstyle: basic only in root" group:"Discoballing:"`
@@ -42,7 +42,7 @@ var DefaultOptions = DiscoOptions{
 	RemoveExtraSpaces:             true,
 	NormalizeFeatureNames:         true,
 	DisambiguateConformanceChoice: true,
-	NormalizeAnchors:              false,
+	NormalizeAnchors:              true,
 	RemoveMandatoryFallbacks:      true,
 	RenameSections:                false,
 	XrefStyleOnlyInRoot:           true,

disco/references.go

@@ -96,6 +96,9 @@ func (an AnchorNormalizer) rewriteCrossReferences(doc *asciidoc.Document) {
 }
 
 func removeCrossReferenceStutter(library *spec.Library, doc *asciidoc.Document, icr *asciidoc.CrossReference, parent asciidoc.Parent, index int) {
+	if parent == nil {
+		return
+	}
 	if len(icr.Elements) > 0 {
 		return
 	}