🚀 go-pugleaf

I ran across a weird interaction of 'downcase' with Latex.  I tried it a few
times and it always happens.  Looks like an OS bug (or is there some subtlety
I'm overlooking?).

Specifically, look what happens when I try to run Latex with downcase = false:
    
        $ DOWNCASE := false
        
        $ latex a
        This is TeX, Apollo Version 2.0 (no format preloaded)
        
        invalid leaf (OS/naming server)
        ! I can't write on file `a.lis'.
        Please type another transcript file name: 
    
But it works with downcase = true as always:
    
        $ DOWNCASE := true
        
        $ latex a
        This is TeX, Apollo Version 2.0 (no format preloaded)
        
        (//LEO/YALE/RAM/A.TEX
        
        LaTeX Version 2.09 - Released 7 January 1986
        (//NEMESIS/PUB/TEX/V20/INPUTS/ARTICLE.STY
        
        ...
    
What's going on?  What is the 'invalid leaf' error?  'a.lis' sounds like a
perfectly good filename to me.  I checked to make sure there isn't already a
locked file called 'a.lis' and stuff like that.

-- Ashwin.


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