diff -ur v3/fsyn.py v4/fsyn.py
--- v3/fsyn.py	2020-04-22 22:24:17.000000000 +0900
+++ v4/fsyn.py	2020-04-26 17:39:47.000000000 +0900
@@ -389,59 +389,21 @@
 
 	return empty.new( locals() )
 
-
-def get_name_args():
-	cmd_new = lambda name, args=[], comment='': empty.new( name=name, args=args, comment=comment )
-
+if __name__ == "__main__":
 	cmds = [
-		cmd_new( 'create' ),
-		cmd_new( 'commit' ),
-		cmd_new( 'log' ),
-		cmd_new( 'curr', comment='show current id' ),
-		cmd_new( 'ids', comment='show all id' ),
-		cmd_new( 'tails', comment='show tail ids' ),
-		cmd_new( 'checkout', [ 'id' ] ),
-		cmd_new( 'check', comment='show dirty' ),
-		cmd_new( 'fixlink', comment='fix link info' ),
-		cmd_new( 'push', [ 'to_path' ] ),
-		cmd_new( 'pull', [ 'from_path' ] ),
+		arg.cmd_new( 'create' ),
+		arg.cmd_new( 'commit' ),
+		arg.cmd_new( 'log' ),
+		arg.cmd_new( 'curr', comment='show current id' ),
+		arg.cmd_new( 'ids', comment='show all id' ),
+		arg.cmd_new( 'tails', comment='show tail ids' ),
+		arg.cmd_new( 'checkout', [ 'id' ] ),
+		arg.cmd_new( 'check', comment='show dirty' ),
+		arg.cmd_new( 'fixlink', comment='fix link info' ),
+		arg.cmd_new( 'push', [ 'to_path' ] ),
+		arg.cmd_new( 'pull', [ 'from_path' ] ),
 	]
-
-	dic = dict( map( lambda cmd: ( cmd.name, cmd ), cmds ) )
-
-	def help():
-		def get(cmd):
-			lst = [ cmd.name ] + cmd.args
-			return to_str( lst, delim=' ' )
-
-		max_n = max( map( lambda cmd: len( get( cmd ) ), cmds ) )
-
-		def get_(cmd):
-			s = get( cmd )
-			if cmd.comment:
-				s += ' ' * ( max_n - len(s) )
-				s += ' # ' + cmd.comment
-			return s
-
-		msg = 'cmd arg ...\n'
-		msg += to_str( map( get_, cmds ), '  ' )
-		dbg.help_exit( msg )
-
-	a = arg.new()
-	name = a.pop()
-	if name not in dic:
-		help()
-
-	cmd = dic.get( name )
-	n = len( cmd.args )
-	av = a.get_av()
-	if len( av ) < n:
-		help()
-	
-	return cmd_new( cmd.name, av[ :n ] )
-
-if __name__ == "__main__":
-	cmd = get_name_args()
+	cmd = arg.get_name_args( cmds )
 
 	dir_path = os.getcwd()
 	fsyn = fsyn_new( dir_path )