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From: peter@sugar.UUCP
Newsgroups: comp.unix.xenix
Subject: New bug in uPort: stdio is broken.
Message-ID: <593@sugar.UUCP>
Date: Sat, 29-Aug-87 00:55:53 EDT
Article-I.D.: sugar.593
Posted: Sat Aug 29 00:55:53 1987
Date-Received: Sun, 30-Aug-87 20:15:38 EDT
Organization: Sugar Land UNIX - Houston, TX
Lines: 41
Keywords: stdio bugs uPort

The following program will not work with the printf(""); taken out. It
appears that stdio() doesn't come up properly initted. This is a bug.
You should be able to interleaf printf() and putchar() in any order.

Without that printf there, the output consists of a single linefeed unless
argv[1][0] is alphabetic.

The purpose of the program, bu the way, is to strip dubious characters off
input read from shell scripts in a UNIX bbs.

#include <stdio.h>
#include <ctype.h>

main(ac, av)
int ac;
char **av;
{
	printf(""); /* needed! */
	while(*++av) {
		while(**av) {
			if(isdigit(**av))
				break;
			if(isupper(**av))
				break;
			if(islower(**av))
				break;
			if(strchr(**av, "-_=+"))
				break;
			++*av;
		}
		while(isalnum(**av) || strchr(**av, ".-_=+")) {
			putchar(**av);
			++*av;
		}
		putchar(' ');
	}
	putchar('\n');
}
-- 
-- Peter da Silva `-_-' ...!seismo!soma!uhnix1!sugar!peter
--                  U   <--- not a copyrighted cartoon :->