Does this mean I can remove those whole three lines? Or do I still need to
check the value of "invert" and complain if it's specified?
You still need to check for it. If you grep for P_NO_INVERT in all .c
files you will find the shortest possible line to do so.
Ah ok, that makes sense. On a related note, am I doing something wrong
here? Even when I'm not listing my target explicitly, I can get an odd
error:
$ iptables -A INPUT -j ACCEPT --test
iptables v1.4.2: Unknown arg `(null)'
Even if the compiler could not, you could use sizeof("foo")-1 to get "3".
That is a property of the C language.
Ha, been programming in it for years and never thought of doing that :-)
Maybe I should only allow alphanumerics and basic punctuation?
I thought about that - but I have come to the conclusion that most
character should be allowed so that people can use all the
extended characters like CJK.
So if I switch to using double-quotes then, is there anything else I'll
need to escape? (such as '$')
That's fine, I've never used whatever that markup is before
(I don't even know what it's called...!)
Read the PDF to the end and you will find out ;-)
Ah, I see now :-) That's a very useful and well written PDF too, btw.
Cheers,
Adam.
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