the 'exclude' option passed to the include plugin doesn't work

[chrisisbd]

In the documentation for blog it says: "all Include plugin flags are supported" but as far as I can tell the 'exclude' option doesn't work.

I tried to use it and couldn't make it work at all.

So I have followed the code where the blog plugin calls the include helper.php and as far as I can see the include code that provides the 'exclude' option functionality never gets called.