use utf8;  # Source file is encoded using UTF-8
print "é" =~ /É/i ?1:0,"\n";  # 1
print "É" =~ /é/i ?1:0,"\n";  # 1
print "é" =~ /\w/ ?1:0,"\n";  # 1
print "É" =~ /\w/ ?1:0,"\n";  # 1