remove busy code translating args -([bnPptw]) to cmd=\1.
replace with aux/getflags and sed.

Reference: /n/atom/patch/applied2013/manflag
Date: Sun Jun 23 17:48:23 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /rc/bin/man	Sun Jun 23 17:46:37 2013
+++ /rc/bin/man	Sun Jun 23 17:46:37 2013
@@ -50,27 +50,17 @@
 		/bin/page
 }
 
-search=yes
-while(~ $d 0) {
-	if(~ $#* 0) {
-		echo 'Usage: man [-bntpPSw] [sec] [sec] ... name1 name2 ...' >[1=2]
-		exit
-	}
-	if(test -d $S/$1){
-		sec=($sec $1)
-		shift
-	}
-	if not
-		switch($1) {
-		case -b ; cmd=b ; shift
-		case -n ; cmd=n ; shift
-		case -P ; cmd=P ; shift
-		case -p ; cmd=p ; shift
-		case -S ; search=no ; shift
-		case -t ; cmd=t ; shift
-		case -w ; cmd=w ; shift
-		case * ; d=1
-		}
+flagfmt='b,n,P,p,S,t,w'
+args='[sec] [sec] ... name1 name2 ...'
+if(! ifs = () eval `{aux/getflags $* | sed 's/flag([bnPptw])=1/cmd=\1/g
+		/flag[bnPptw]=\(\)/d'} || ~ $#* 0){
+	aux/usage
+	exit usage
+}
+
+while(test -d $S/$1){
+	sec=($sec $1)
+	shift
 }
 if(~ $#sec 0) {
 	sec=`{ls -pd $S/[0-9]* }
@@ -79,7 +69,7 @@
 if(~ $#* 1) pat='^'^$1^' '
 if not pat='^('^`{echo $* | sed 's/ /|/g'}^') '
 fils=()
-if(~ $search yes)
+if(~ $#flagS 0)
 for(i in $S/$sec){
 	if(/bin/test -f $i/INDEX){
 		try=`{grep -i $pat $i/INDEX | sed 's/^[^ ]* //' | sort -u}