c:\@Work\Perl\monks>perl -wMstrict -le
"use charnames ':full';
 ;;
 use Test::More tests => 2;
 ;;
 my $in = qq{\N{LATIN SMALL LETTER C WITH CEDILLA}};
 ;;
 like ($in, qr{\A[A-Za-z0-9](?:[A-Za-z0-9_.-]*?[A-Za-z0-9]|)\z}, 'kcott');
 ;;
 my $alpha      = qr{ [A-Za-z0-9]    }xms;
 my $alpha_plus = qr{ $alpha | [_.-] }xms;
 like ($in, qr{ \A $alpha (?: $alpha_plus* $alpha)? \z }xms, 'AnomalousMonk');
"
1..2
not ok 1 - kcott
#   Failed test 'kcott'
#   at -e line 1.
#                   'ô'
#     doesn't match '(?^:\A[A-Za-z0-9](?:[A-Za-z0-9_.-]*?[A-Za-z0-9]|)\z)'
not ok 2 - AnomalousMonk
#   Failed test 'AnomalousMonk'
#   at -e line 1.
#                   'ô'
#     doesn't match '(?^msx: \A (?^msx: [A-Za-z0-9]    ) (?: (?^msx: (?^msx: [A-Za-z0-9]    ) | [_.-] )* (?^msx: [A-Za-z0-9]    ))? \z )'
# Looks like you failed 2 tests of 2.