javatests/de/jflex/testcase/macro_complement/macro.flex (10 lines of code) (raw):
/*
* Copyright 2020, Gerwin Klein <lsf@jflex.de>
* SPDX-License-Identifier: BSD-3-Clause
*/
package de.jflex.testcase.macro_complement;
%%
%class Macro
s = !{r}
%%
{s} { /* some action */ }