[DGD] accessd.c filter_from_file ??

[Michael McKiel]

I was wondering if someone could explain this function's syntax, the
access[file .. file] makes sense, but the rest looks quite strange.
access[file + "/" .. file + "0"] ??
why would file be appended with a zero?
Thanks.


/*
 * NAME:        filter_from_file()
 * DESCRIPTION: filter access from a file
 */
private mapping filter_from_file(mapping access, string file)
{
    if (file == "/") {
        return access;
    }
    return access[file .. file] +
           (access[file + "/" .. file + "0"] - ({ file + "0" }));
}


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