Without anchors that will just ignore the presence of control characters.
And be aware that [:space:] includes chr(11) (vertical tab) & chr(12) (form feed) which most modern "text" programs have no idea what to do with.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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Oh, yeah. I actually did negation, i.e.
print "Is Non-Text" if [^[:print:][:space:]]/ ;
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