in reply to How to match "text"?

How about:

if( $s =~ m[^[ -~\t\n]+$] ) { print 'IsAscii'; } else { print 'IsNotAscii'; }

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.