[ic] Nested ELSIFs

[Grant]

After running into a strange problem in my code, I've done some testing and
found what seems like a bug to me.  After narrowing it down, the following
seems to be the simplest correct expression of the code that causes the bug:

***
[if scratch variable]
[elsif !scratch variable]
[then]
        [if scratch variable]
        [elsif !scratch variable]
                CORRECT
        [/elsif]
        [/if]
[/then]
[/elsif]
[/if]
***

Running that code returns nothing on the screen.  Naming the parameters
doesn't help.  Is it a bug, or are nested elsifs just not allowed?

- Grant