- "$(UNSTRING "${tags#tags=}" |tr , '\0' |xargs -r0 printf ' [span .tag %s]')" \
- "$link" "$link" "$link"
+ "$(printf '%s\n' "${tags#tags=}" \
+ | sed -r "$UNSTRING"' s;^;,;; s;,+;,;g; s;,$;;;
+ :X s;,([^,]+)(,|$); [span .tag \1]\2;; tX;'
+ )" "$name" "$link" "$link"