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
14 Character class syntax [. .] is reserved for future extensions
15 Character class syntax [= =] is reserved for future extensions
19 use warning 'unsafe' ;
25 (?=a)* matches null string many times at - line 4.
28 use warning 'unsafe' ;
34 Strange *+?{} on zero-length expression at - line 4.
37 use warning 'unsafe' ;
47 Character class syntax [: :] is reserved for future extensions at - line 4.
48 Character class syntax [. .] is reserved for future extensions at - line 5.
49 Character class syntax [= =] is reserved for future extensions at - line 6.
52 use warning 'unsafe' ;
53 # use utf8 ; # Note this line should be uncommented when utf8 gets fixed.
63 Character class syntax [: :] is reserved for future extensions at - line 5.
64 Character class syntax [. .] is reserved for future extensions at - line 6.
65 Character class syntax [= =] is reserved for future extensions at - line 7.