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' ;
23 (?=a)* matches null string many times at - line 4.
26 use warning 'unsafe' ;
30 Strange *+?{} on zero-length expression at - line 4.
33 use warning 'unsafe' ;
39 Character class syntax [: :] is reserved for future extensions at - line 4.
40 Character class syntax [. .] is reserved for future extensions at - line 5.
41 Character class syntax [= =] is reserved for future extensions at - line 6.
44 use warning 'unsafe' ;
45 # use utf8 ; # Note this line should be uncommented when utf8 gets fixed.
51 Character class syntax [: :] is reserved for future extensions at - line 5.
52 Character class syntax [. .] is reserved for future extensions at - line 6.
53 Character class syntax [= =] is reserved for future extensions at - line 7.