> It would have helped had the OP shown any input at all.

agreed, I also wasted time answering another question. :(

> Check if a variable contains only one letter

  DB<106> $str='A B C'
 => "A B C"

  DB<107> @matches= $str=~/([A-Z])/g
 => ("A", "B", "C")

  DB<108> scalar @matches
 => 3

[download]

  DB<115> $str='A B C'
 => "A B C"

  DB<116> $str !~ /[A-Z].*[A-Z]/
 => ""

  DB<117> $str="   A   "
 => "   A   "

  DB<118> $str !~ /[A-Z].*[A-Z]/
 => 1

[download]

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re^2: Check if a variable contains only one letter? by LanX
in thread Check if a variable contains only one letter? by Anonymous Monk

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