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Max Chappell wrote:
> Another piece of advice is to use nested brackets such as:
> "[a-zA-Z-[ABC]]" (Use any letters except AB or C).
> Along these lines I've tried:
> "[.-[NaN]]*" - far from working...
Does something like (.-[Na])+ work? I'm unsure that . is a proper
character class that's subject to substraction.
> This does not allow .00009 for example, so we'll have to make the reg
> exp even more complicated.
I believe I have one somewhere that's close to being good and that could
exclude NaN. However it's several lines long (when wrapped) and last
year it tended to crash validators. I can dig it up if you don't find a