Hmm.
So it seems it's parsing the various options' internal spaces as option
separators.
So it does. Maybe if you used <backslash><space> when you set them the
way you used <backslash><quote>, they'd survive. But right now it seems
you can't get the internal spaces to stay hard without hardening the
spaces between options.
If that's a problem, I suppose I could get around it by
specifying a separate variable for each option, including the "-a", and
double-quote each of them.
I had been thinking of suggesting that.
DWT
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