--- a/src/luan/modules/Io.luan	Wed Jan 23 13:34:18 2019 -0700
+++ b/src/luan/modules/Io.luan	Wed Jan 23 23:37:02 2019 -0700
@@ -61,25 +61,25 @@
 end
 
 
-function Io.output_to(out,fn,...)
+function Io.output_to(out,fn)
 	local old_out = Io.stdout
-	return try( {
-		function(...)
+	return try {
+		function()
 			Io.stdout = out
-			return fn(...)
-		end;
+			return fn()
+		end
 		finally = function()
 			Io.stdout = old_out
-		end;
-	}, ... )
+		end
+	}
 end
 
 local uri = Io.uri  -- make local
 
-function Io.output_of(fn,...)
+function Io.output_of(fn)
 	local string_uri = uri "string:"
 	local out = string_uri.text_writer()
-	Io.output_to(out,fn,...)
+	Io.output_to(out,fn)
 	out.close()
 	return string_uri.read_text()
 end