preventing complete from putting trailing spaces

[Noel Yap]

I'm trying to write a complete function that'll sometimes return directories 
and sometimes return files.  When it returns directories (with a trailing '/'), 
I don't want readline to place trailing spaces.  OTOH, when it returns files 
(with no trailing
'/'), I do want it to place a trailing space.  How do I do this?

Thanks,
Noel
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