-if test "`echo -n a`" = "-n a"; then
- # looks like a SysV system:
- n1=''; n2='\c'
-else
- n1='-n'; n2=''
-fi
-oldtty=`stty -g 2>/dev/null`
-if stty -cbreak 2>/dev/null; then
- cb='cbreak'; ncb='-cbreak'
-else
- # 'stty min 1' resets eof to ^a on both SunOS and SysV!
- cb='min 1 -icanon'; ncb='icanon eof ^d'
-fi
-if test $? -eq 0 && test -n "$oldtty"; then
- trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
-else
- trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
-fi
+case $1 in
+ --h*) exec printf '%s\n' "$usage";;
+ --v*) exec printf '%s\n' "$version";;
+ --) shift;;
+ -?*) printf >&2 '%s\n' "$0: $1: unknown option; try '$0 --help' for help"
+ exit 1;;
+esac