D:\>perl -le "print $]; $don't = 1;"
Old package separator "'" deprecated at -e line 1.
5.038000

##</code><code>##

D:\>perl -wle "print $]; $don't = 1;"
Old package separator "'" deprecated at -e line 1.
Name "don::t" used only once: possible typo at -e line 1.
5.038000