<li>
For an integer value <code>n</code>, where <code>n</code> is of <a href="#Numeric_types">integer type</a>
or an untyped <a href="#Constants">integer constant</a>, the iteration values 0 through <code>n-1</code>
are produced in increasing order.
If <code>n</code> is of integer type, the iteration values have that same type.
Otherwise, the type of <code>n</code> is determined as if it were assigned to the
iteration variable.

   * Glob patterns must be unique, if there's a clash assign to the most
     popular format
   * The main mime type should be the canonical one, use aliases for any
     other widely used forms
   * Where there's a hierarchy in the types, list it via a parent
   * Highly specific magic matches get a high priority
   * General magic matches which could trigger a false-positive need
     a low one