Re^4: regular expression to check if the textbox contains only special characters

The digit 1 doesn't belong between A and Z:

ABC_TO,DEF,GHI_JKL,GHI_JK1_TO 
                         ~
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($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
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