gawk 3.1.5 array question...

[Jeff Chua]

awk '
        BEGIN{
                x["a"]="a";

                print "begin...";
                for(i in x)
                        print i;


                if(x["b"] == "a")   # <== this initializes x["b"] ???
                        print "ok";

                print "end ...";
                for(i in x)
                        print i;
        }'


This is a bug or a feature? Notice that x["b"] was never defined ...


Thanks,
Jeff

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