3 %.*s matches null string many times
5 $a = "ABC123" ; $a =~ /(?=a)*/'
7 Strange *+?{} on zero-length expression
11 Character class syntax [. .] is reserved for future extensions
12 Character class syntax [= =] is reserved for future extensions
16 use warnings 'unsafe' ;
19 no warnings 'unsafe' ;
22 (?=a)* matches null string many times at - line 4.
25 use warnings 'unsafe' ;
28 no warnings 'unsafe' ;
31 Strange *+?{} on zero-length expression at - line 4.
34 use warnings 'unsafe' ;
43 no warnings 'unsafe' ;
53 Character class syntax [: :] belongs inside character classes at - line 4.
54 Character class syntax [. .] belongs inside character classes at - line 5.
55 Character class syntax [. .] is reserved for future extensions at - line 5.
56 Character class syntax [= =] belongs inside character classes at - line 6.
57 Character class syntax [= =] is reserved for future extensions at - line 6.
58 Character class syntax [. .] is reserved for future extensions at - line 8.
59 Character class syntax [= =] is reserved for future extensions at - line 9.
60 Character class syntax [: :] belongs inside character classes at - line 10.
61 Character class [:zog:] unknown at - line 19.