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diff --git a/tests/test-include-by-push/scanner.l b/tests/test-include-by-push/scanner.l
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+/*
+ * 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.
+ */
+
+%{
+/* A scanner file to build "scanner.c".
+ Input language is any text.
+ "#include <filename>" causes a buffer switch.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "config.h"
+%}
+
+%option 8bit outfile="scanner.c" prefix="test"
+%option nounput nomain noyywrap
+%option warn
+
+%x GET_FILENAME
+
+%%
+
+<INITIAL>{
+^"#include"[[:blank:]]+"<" { BEGIN(GET_FILENAME); }
+.|\n { ECHO; }
+}
+
+<GET_FILENAME>{
+[[:alnum:]_.-]+> {
+ /* recurse */
+ yytext[yyleng-1]='\0';
+ if((yyin=fopen(yytext,"r"))==NULL) {
+ fprintf(stderr,"*** Error: Could not open include file \"%s\".\n",yytext);
+ yyterminate();
+ }
+ yypush_buffer_state( yy_create_buffer( yyin, YY_BUF_SIZE ));
+ BEGIN(0);
+ }
+.|\n {
+ fprintf(stderr,"Invalid input \"%s\".\n", yytext);
+ yyterminate();
+ }
+}
+
+<<EOF>> {
+ fclose(yyin);
+ yypop_buffer_state();
+ if(!YY_CURRENT_BUFFER)
+ yyterminate();
+ }
+
+%%
+
+int main(int argc, char** argv);
+
+int
+main ( int argc, char** argv )
+{
+ FILE * fp;
+ if( argc != 2 ) {
+ fprintf(stderr,"*** Error: Must specifiy one filename.\n");
+ exit(-1);
+ }
+ if((fp=fopen(argv[1],"r"))==NULL) {
+ fprintf(stderr,"*** Error: fopen(%s) failed.\n",argv[1]);
+ exit(-1);
+ }
+ yyin = fp;
+ yyout = stdout;
+ yylex();
+ printf("TEST RETURNING OK.\n");
+ return 0;
+}