add note to allow configuring null terminated output

recall.sh

@@ -112,6 +112,7 @@ then
 		| fzf --read0 --print0 -m --no-sort "${fzf_query[@]}" -d / --nth 1,2,3 --preview='cat {}/info; head {}/dat' \
 		| awk -v RS='\0' -v FS='/' -v OFS='/' -v ORS='\0' '{for (i=2; i<=NF; i++) printf "%s%s", $(i), (i<NF ? OFS : ORS)}' \
 		| awk -v prefix="$LOG_ROOT/" -v RS='\0' -v ORS='\n' '{print prefix $0}' \
+		: "TODO: allow configuring null terminated output"
 	)
 else
 	SUBPROG=""