newt: clean up regexp

rc/bin/newt

@@ -72,7 +72,7 @@ fn getposts{ ls | grep -e '^[0-9]+$' | sort -n | tail -$maxposts }
 fn k{
 	kmnt=`{echo $mnt | sed 's/\//\\\//g'}
 	f $mnt/$* |
-		grep -v -e '\/([0-9]+(\/|$)|post$)' |
+		grep -v -e '\/([0-9]+|article|body|header|post|xover)$' |
 		sed 's/^'$"kmnt'\// g	/g' |
 		sort
 }