# perl4 prints: second new
# perl5 prints: 3
-=item * Discontinuance
-
-In Perl 4 (and versions of Perl 5 before 5.004), C<'\r'> characters in
-Perl code were silently allowed, although they could cause (mysterious!)
-failures in certain constructs, particularly here documents. Now,
-C<'\r'> characters cause an immediate fatal error. (Note: In this
-example, the notation B<\015> represents the incorrect line
-ending. Depending upon your text viewer, it will look different.)
-
- print "foo";\015
- print "bar";
-
- # perl4 prints: foobar
- # perl5.003 prints: foobar
- # perl5.004 dies: Illegal character \015 (carriage return)
-
-See L<perldiag> for full details.
-
=item * Deprecation
Some error messages will be different.