extended.rules

/*
 * This file is part of flex.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * Neither the name of the University nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE.
 */
/* Output should match the input. */

%option 8bit nounput nomain noyywrap noinput warn
%%

abc(?# Single Line Comment )def    {M4_TEST_DO(yyecho())}
ghi(?#
    multi-line
    comment
    )jkl                           {M4_TEST_DO(yyecho())}

mno(?#
    multi-line //
    comment with ##
    ~~!@#$ %^&*(@-_+=\|,.<>/ ?: ;
    punctuation
    )pqr                           {M4_TEST_DO(yyecho())}
(?# Start of a rule.)stu           {M4_TEST_DO(yyecho())}
vwxyz(?#End of a rule.)            {M4_TEST_DO(yyecho())}
A(?x: B
    /* comment */
    C D)                           {M4_TEST_DO(yyecho())}

\n                                 {M4_TEST_DO(yyecho())}
###
abcdefghijklmnopqrstuvwxyz
ABCD