16:46 >perl -Mstrict -wE "say 'Matched !!' if '\x03' =~ /\\x03/;"
Matched !!

16:46 >perl -Mstrict -wE "say 'Matched !!' if qq[\x03] =~ /\\x03/;"

16:46 >perl -Mstrict -wE "say 'Matched !!' if qq[\x03] =~ /\cC/;"
Matched !!

16:46 >