crlf.c
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crlf.c
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	/* crlf.c
	* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
	*
	* This file is free software; as a special exception the author gives
	* unlimited permission to copy and/or distribute it, with or without
	* modifications, as long as this notice is preserved.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
	* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
	*/

	#include <stdio.h>

	int
	main(int argc, char **argv)
	{
	int c, lc;
	int off=0;

	if( argc > 1 ) {
	fprintf(stderr, "no arguments, please\n");
	return 1;
	}

	lc = -1;
	while( (c=getchar()) != EOF ) {
	#if 0
	if( c == '\r' && lc == ' ' )
	fprintf(stderr,"SP,CR at %d\n", off );
	if( c == '\n' && lc == ' ' )
	fprintf(stderr,"SP,LF at %d\n", off );
	#endif
	if( c == '\n' && lc == '\r' )
	putchar(c);
	else if( c == '\n' ) {
	putchar('\r');
	putchar(c);
	}
	else if( c != '\n' && lc == '\r' ) {
	putchar('\n');
	putchar(c);
	}
	else
	putchar(c);

	lc = c;
	off++;
	}

	return 0;
	}