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revision 29 by nigel, Sat Feb 24 21:38:53 2007 UTC revision 33 by nigel, Sat Feb 24 21:39:01 2007 UTC
# Line 2  ChangeLog for PCRE Line 2  ChangeLog for PCRE
2  ------------------  ------------------
3    
4    
5    Version 2.05 21-Apr-99
6    ----------------------
7    
8    1. Changed the type of magic_number from int to long int so that it works
9    properly on 16-bit systems.
10    
11    2. Fixed a bug which caused patterns starting with .* not to work correctly
12    when the subject string contained newline characters. PCRE was assuming
13    anchoring for such patterns in all cases, which is not correct because .* will
14    not pass a newline unless PCRE_DOTALL is set. It now assumes anchoring only if
15    DOTALL is set at top level; otherwise it knows that patterns starting with .*
16    must be retried after every newline in the subject.
17    
18    
19    Version 2.04 18-Feb-99
20    ----------------------
21    
22    1. For parenthesized subpatterns with repeats whose minimum was zero, the
23    computation of the store needed to hold the pattern was incorrect (too large).
24    If such patterns were nested a few deep, this could multiply and become a real
25    problem.
26    
27    2. Added /M option to pcretest to show the memory requirement of a specific
28    pattern. Made -m a synonym of -s (which does this globally) for compatibility.
29    
30    3. Subpatterns of the form (regex){n,m} (i.e. limited maximum) were being
31    compiled in such a way that the backtracking after subsequent failure was
32    pessimal. Something like (a){0,3} was compiled as (a)?(a)?(a)? instead of
33    ((a)((a)(a)?)?)? with disastrous performance if the maximum was of any size.
34    
35    
36  Version 2.03 02-Feb-99  Version 2.03 02-Feb-99
37  ----------------------  ----------------------
38    
39  1. Fixed typo and small mistake in man page.  1. Fixed typo and small mistake in man page.
40    
41  2. Added 4th condition (GPL supersedes) and created separate LICENCE file.  2. Added 4th condition (GPL supersedes if conflict) and created separate
42    LICENCE file containing the conditions.
43    
44  3. Updated pcretest so that patterns such as /abc\/def/ work like they do in  3. Updated pcretest so that patterns such as /abc\/def/ work like they do in
45  Perl, that is the internal \ allows the delimiter to be included in the  Perl, that is the internal \ allows the delimiter to be included in the

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