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revision 336 by ph10, Sat Apr 12 15:59:03 2008 UTC revision 340 by ph10, Fri Apr 18 20:00:21 2008 UTC
# Line 62  Version 7.7 05-Mar-08 Line 62  Version 7.7 05-Mar-08
62      (a) A lone ] character is dis-allowed (Perl treats it as data).      (a) A lone ] character is dis-allowed (Perl treats it as data).
63      (b) A back reference to an unmatched subpattern matches an empty string      (b) A back reference to an unmatched subpattern matches an empty string
64          (Perl fails the current match path).          (Perl fails the current match path).
65    
66    14. A pattern such as /(?2)[]a()b](abc)/ which had a forward reference to a
67        non-existent subpattern following a character class starting with ']' and
68        containing () gave an internal compiling error instead of "reference to
69        non-existent subpattern". Fortunately, when the pattern did exist, the
70        compiled code was correct. (When scanning forwards to check for the
71        existencd of the subpattern, it was treating the data ']' as terminating
72        the class, so got the count wrong. When actually compiling, the reference
73        was subsequently set up correctly.)
74    
75    
76  Version 7.6 28-Jan-08  Version 7.6 28-Jan-08

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