hswg: don't link to drafts

hswg/main.go

@@ -80,6 +80,10 @@ type Metadata struct {
 	Attributes types.Attributes
 }
 
+// IsDraft returns whether the document is marked as a draft, and should not
+// be linked anywhere else.
+func (m *Metadata) IsDraft() bool { return m.Attributes.Has("draft") }
+
 // Render converts an io.Reader with an AsciiDoc document to HTML. So long as
 // the file could be read at all, it will always return a non-empty document.
 func Render(r io.Reader, config configuration.Configuration) (
@@ -154,7 +158,8 @@ var linkWordRE = regexp.MustCompile(`\b\p{Lu}\p{L}*\b`)
 
 func expand(m *map[string]*entry, name string, chunk []byte) []byte {
 	return linkWordRE.ReplaceAllFunc(chunk, func(match []byte) []byte {
-		if link, ok := (*m)[string(match)]; ok && string(match) != name {
+		if link, ok := (*m)[string(match)]; ok && string(match) != name &&
+			!link.metadata.IsDraft() {
 			link.backlinks = append(link.backlinks, name)
 			return []byte(makeLink(m, string(match)))
 		}