Collapse some cases together.

etc/etc.i386/MAKEDEV

@@ -239,9 +239,9 @@ ch*)
 	ch*) name=ch;  chr=17;;
 	esac
 	rm -f $name$unit
-	mknod ${name}${unit}	c $chr `expr $unit '*' 16 + 0`
-	chgrp operator ${name}${unit}
-	chmod 640 ${name}${unit}
+	mknod $name$unit	c $chr `expr $unit '*' 16 + 0`
+	chgrp operator $name$unit
+	chmod 640 $name$unit
 	umask 77
 	;;
 
@@ -261,33 +261,26 @@ cd*|mcd*)
 	umask 77
 	;;
 
-lpa*)
-	unit=`expr $i : 'lpa\(.*\)'`
-	rm -f lpa$unit
-	mknod lpa$unit c 16 `expr $unit + 128`
-	chown root.wheel lpa$unit
+lpt*|lpa*)
+	unit=`expr $i : '...\(.*\)'`
+	case $i in
+	lpt*) name=lpt; flags=0;;
+	lpa*) name=lpa; flags=128;;
+	esac
+	rm -f $name$unit
+	mknod $name$unit c 16 `expr $unit + $flags`
+	chown root.wheel $name$unit
 	;;
 
-lpt*)
-	unit=`expr $i : 'lpt\(.*\)'`
-	rm -f lpt$unit
-	mknod lpt$unit c 16 $unit
-	chown root.wheel lpt$unit
-	;;
-
-bpf*)
-	unit=`expr $i : 'bpf\(.*\)'`
-	rm -f bpf$unit
-	mknod bpf$unit c 23 $unit
-	chown root.wheel bpf$unit
-	;;
-
-tun*)
-	unit=`expr $i : 'tun\(.*\)'`
-	rm -f tun$unit
-	mknod tun$unit c 40 $unit
-	chmod 600 tun$unit
-	chown root.wheel tun$unit
+bpf*|tun*)
+	unit=`expr $i : '...\(.*\)'`
+	case $i in
+	bpf*) name=bpf; chr=23;;
+	tun*) name=tun; chr=40;;
+	esac
+	rm -f $name$unit
+	mknod $name$unit c $chr $unit
+	chown root.wheel $name$unit
 	;;
 
 speaker)					# (XXX - installed)
@@ -303,25 +296,16 @@ lkm)
 	chmod 640 lkm
 	;;
 
-mms*)
-	unit=`expr $i : 'mms\(.*\)'`
-	rm -f mms$unit
-	mknod mms$unit c 35 $unit
-	chown root.wheel mms$unit
-	;;
-
-lms*)
-	unit=`expr $i : 'lms\(.*\)'`
-	rm -f lms$unit
-	mknod lms$unit c 36 $unit
-	chown root.wheel lms$unit
-	;;
-
-pms*)
-	unit=`expr $i : 'pms\(.*\)'`
-	rm -f pms$unit
-	mknod pms$unit c 37 $unit
-	chown root.wheel pms$unit
+mms*|lms*|pms*)
+	unit=`expr $i : '.ms\(.*\)'`
+	case $i in
+	mms*) name=mms; chr=35;;
+	lms*) name=lms; chr=36;;
+	pms*) name=pms; chr=37;;
+	esac
+	rm -f $name$unit
+	mknod $name$unit c $chr $unit
+	chown root.wheel $name$unit
 	;;
 
 mouse*)						# (XXX)