State name restrictions.
 [rsc] --rwxrwxr-x M 399900 glenda sys 1457 Sep 26 15:01 rc/bin/patch/create
	/n/sourcesdump/2005/0926/plan9/rc/bin/patch/create:6,12 - 
	/n/sourcesdump/2005/0927/plan9/rc/bin/patch/create:6,12
	  }
	  
	  if(! echo $1 | grep -s '^[a-z_0-9.\-]+$'){
	- 	echo bad name
	+ 	echo 'bad name: [a-z0-9._\-]+ only' >[1=2]
	  	exit usage
	  }
	  
 [rsc] --rw-rw-r-- M 399900 glenda sys 2237 Sep 26 15:00 sys/man/1/patch
	/n/sourcesdump/2005/0926/plan9/sys/man/1/patch:35,40 - 
	/n/sourcesdump/2005/0927/plan9/sys/man/1/patch:35,41
	  used to propose additions or changes to Plan 9.
	  Each patch has a 
	  .I name
	+ (lowercase letters, numbers, dash, dot, and underscore only)
	  and is stored in
	  .BI /n/sources/patch/ name \fR.
	  .PP