support hashtags in bios

activity.go

@@ -1418,6 +1418,19 @@ func junkuser(user *WhatAbout) junk.Junk {
 	j["name"] = user.Display
 	j["preferredUsername"] = user.Name
 	j["summary"] = user.HTAbout
+	var tags []junk.Junk
+	for _, o := range user.Onts {
+		t := junk.New()
+		t["type"] = "Hashtag"
+		o = strings.ToLower(o)
+		t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
+		t["name"] = o
+		tags = append(tags, t)
+	}
+	if len(tags) > 0 {
+		j["tag"] = tags
+	}
+
 	if user.ID > 0 {
 		j["type"] = "Person"
 		j["url"] = user.URL

database.go

@@ -59,6 +59,7 @@ func userfromrow(row *sql.Row) (*WhatAbout, error) {
 	marker.HashLinker = ontoreplacer
 	marker.AtLinker = attoreplacer
 	user.HTAbout = template.HTML(marker.Mark(user.About))
+	user.Onts = marker.HashTags
 
 	return user, nil
 }

honk.go

@@ -41,6 +41,7 @@ type WhatAbout struct {
 	Display string
 	About   string
 	HTAbout template.HTML
+	Onts    []string
 	Key     string
 	URL     string
 	Options UserOptions