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revision 277 by ph10, Mon Nov 26 17:03:45 2007 UTC revision 291 by ph10, Wed Dec 26 18:46:46 2007 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 7.5 12-Nov-07  Version 7.5 23-Dec-07
5  ---------------------  ---------------------
6    
7  1.  Applied a patch from Craig: "This patch makes it possible to 'ignore'  1.  Applied a patch from Craig: "This patch makes it possible to 'ignore'
8      values in parens when parsing an RE using the C++ wrapper."      values in parens when parsing an RE using the C++ wrapper."
9    
10  2.  Negative specials like \S did not work in character classes in UTF-8 mode.  2.  Negative specials like \S did not work in character classes in UTF-8 mode.
11      Characters greater than 255 were excluded from the class instead of being      Characters greater than 255 were excluded from the class instead of being
12      included.      included.
13    
14  3.  The same bug as (2) above applied to negated POSIX classes such as  3.  The same bug as (2) above applied to negated POSIX classes such as
15      [:^space:].      [:^space:].
16    
17  4.  PCRECPP_STATIC was referenced in pcrecpp_internal.h, but nowhere was it  4.  PCRECPP_STATIC was referenced in pcrecpp_internal.h, but nowhere was it
18      defined or documented. It seems to have been a typo for PCRE_STATIC, so      defined or documented. It seems to have been a typo for PCRE_STATIC, so
19      I have changed it.      I have changed it.
20    
21  5.  The construct (?&) was not diagnosed as a syntax error (it referenced the  5.  The construct (?&) was not diagnosed as a syntax error (it referenced the
22      first named subpattern) and a construct such as (?&a) would reference the      first named subpattern) and a construct such as (?&a) would reference the
23      first named subpattern whose name started with "a" (in other words, the      first named subpattern whose name started with "a" (in other words, the
24      length check was missing). Both these problems are fixed. "Subpattern name      length check was missing). Both these problems are fixed. "Subpattern name
25      expected" is now given for (?&) (a zero-length name), and this patch also      expected" is now given for (?&) (a zero-length name), and this patch also
26      makes it give the same error for \k'' (previously it complained that that      makes it give the same error for \k'' (previously it complained that that
27      was a reference to a non-existent subpattern).      was a reference to a non-existent subpattern).
28    
29  6.  The erroneous patterns (?+-a) and (?-+a) give different error messages;  6.  The erroneous patterns (?+-a) and (?-+a) give different error messages;
30      this is right because (?- can be followed by option settings as well as by      this is right because (?- can be followed by option settings as well as by
31      digits. I have, however, made the messages clearer.      digits. I have, however, made the messages clearer.
32    
33  7.  Patterns such as (?(1)a|b) (a pattern that contains fewer subpatterns  7.  Patterns such as (?(1)a|b) (a pattern that contains fewer subpatterns
34      than the number used in the conditional) now cause a compile-time error.      than the number used in the conditional) now cause a compile-time error.
35      This is actually not compatible with Perl, which accepts such patterns, but      This is actually not compatible with Perl, which accepts such patterns, but
36      treats the conditional as always being FALSE (as PCRE used to), but it      treats the conditional as always being FALSE (as PCRE used to), but it
37      seems to me that giving a diagnostic is better.      seems to me that giving a diagnostic is better.
38    
39  8.  Change "alphameric" to the more common word "alphanumeric" in comments  8.  Change "alphameric" to the more common word "alphanumeric" in comments
40      and messages.      and messages.
41    
42  9.  Fix two occurrences of "backslash" in comments that should have been  9.  Fix two occurrences of "backslash" in comments that should have been
43      "backspace".      "backspace".
44    
45  10. Remove two redundant lines of code that can never be obeyed (their function  10. Remove two redundant lines of code that can never be obeyed (their function
46      was moved elsewhere).      was moved elsewhere).
47    
48  11. The program that makes PCRE's Unicode character property table had a bug  11. The program that makes PCRE's Unicode character property table had a bug
49      which caused it to generate incorrect table entries for sequences of      which caused it to generate incorrect table entries for sequences of
50      characters that have the same character type, but are in different scripts.      characters that have the same character type, but are in different scripts.
51      It amalgamated them into a single range, with the script of the first of      It amalgamated them into a single range, with the script of the first of
52      them. In other words, some characters were in the wrong script. There were      them. In other words, some characters were in the wrong script. There were
53      thirteen such cases, affecting characters in the following ranges:      thirteen such cases, affecting characters in the following ranges:
54    
55        U+002b0 - U+002c1        U+002b0 - U+002c1
56        U+0060c - U+0060d        U+0060c - U+0060d
57        U+0061e - U+00612        U+0061e - U+00612
58        U+0064b - U+0065e        U+0064b - U+0065e
59        U+0074d - U+0076d        U+0074d - U+0076d
60        U+01800 - U+01805        U+01800 - U+01805
# Line 66  Version 7.5 12-Nov-07 Line 66  Version 7.5 12-Nov-07
66        U+0fb46 - U+0fbb1        U+0fb46 - U+0fbb1
67        U+10450 - U+1049d        U+10450 - U+1049d
68    
69    12. The -o option (show only the matching part of a line) for pcregrep was not
70        compatible with GNU grep in that, if there was more than one match in a
71        line, it showed only the first of them. It now behaves in the same way as
72        GNU grep.
73    
74    13. If the -o and -v options were combined for pcregrep, it printed a blank
75        line for every non-matching line. GNU grep prints nothing, and pcregrep now
76        does the same. The return code can be used to tell if there were any
77        non-matching lines.
78    
79    14. Added --file-offsets and --line-offsets to pcregrep.
80    
81    15. The pattern (?=something)(?R) was not being diagnosed as a potentially
82        infinitely looping recursion. The bug was that positive lookaheads were not
83        being skipped when checking for a possible empty match (negative lookaheads
84        and both kinds of lookbehind were skipped).
85    
86    16. Fixed two typos in the Windows-only code in pcregrep.c, and moved the
87        inclusion of <windows.h> to before rather than after the definition of
88        INVALID_FILE_ATTRIBUTES (patch from David Byron).
89    
90    17. Specifying a possessive quantifier with a specific limit for a Unicode
91        character property caused pcre_compile() to compile bad code, which led at
92        runtime to PCRE_ERROR_INTERNAL (-14). Examples of patterns that caused this
93        are: /\p{Zl}{2,3}+/8 and /\p{Cc}{2}+/8. It was the possessive "+" that
94        caused the error; without that there was no problem.
95    
96    18. Added --enable-pcregrep-libz and --enable-pcregrep-libbz2.
97    
98    19. Added --enable-pcretest-libreadline.
99    
100    20. In pcrecpp.cc, the variable 'count' was incremented twice in
101        RE::GlobalReplace(). As a result, the number of replacements returned was
102        double what it should be. I have removed one of the increments.
103    
104    21. Several CMake things:
105    
106        (1) Arranged that, when cmake is used on Unix, the libraries end up with
107            the names libpcre and libpcreposix.
108    
109        (2) Arranged for pcretest and pcregrep to link with the newly-built
110            libraries, not previously installed ones.
111    
112        (3) Added PCRE_SUPPORT_LIBREADLINE, PCRE_SUPPORT_LIBZ, PCRE_SUPPORT_LIBBZ2.
113    
114    
115  Version 7.4 21-Sep-07  Version 7.4 21-Sep-07
116  ---------------------  ---------------------

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