DIGITP

[Kent M. Pitman <KMP at MIT-MC>]

I find (DIGITP #/q) => T extremely unaesthetic. The most commonly useful things
should be the most accessible. If you make the most useful things the hardest
to get at, then people will shy from the feature. Why can't (DIGITP #/A) return
() and (DIGITP #/A 16.) return non-()? This could compile optimally for both,
but it makes the most useful case the most accessible one. I have *never* 
wanted q to be a digit. I have rarely wanted A to be a digit (in fact only 
once in the last 3 years). Typing a 10. in the second arg position or having a 
DECIMAL-DIGITP (both of which involve *more* typing than the 1 arg case) is
ridiculous. -kmp