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revision 400 by ph10, Sat Mar 21 16:59:40 2009 UTC revision 421 by ph10, Fri Aug 14 15:43:27 2009 UTC
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1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 7.9 xx-xxx-09  Version 8.00 ??-???-??
5    ----------------------
6    
7    1.  The table for translating pcre_compile() error codes into POSIX error codes
8        was out-of-date, and there was no check on the pcre_compile() error code
9        being within the table. This could lead to an OK return being given in
10        error.
11    
12    2.  Changed the call to open a subject file in pcregrep from fopen(pathname,
13        "r") to fopen(pathname, "rb"), which fixed a problem with some of the tests
14        in a Windows environment.
15    
16    3.  The pcregrep --count option prints the count for each file even when it is
17        zero, as does GNU grep. However, pcregrep was also printing all files when
18        --files-with-matches was added. Now, when both options are given, it prints
19        counts only for those files that have at least one match. (GNU grep just
20        prints the file name in this circumstance, but including the count seems
21        more useful - otherwise, why use --count?) Also ensured that the
22        combination -clh just lists non-zero counts, with no names.
23    
24    4.  The long form of the pcregrep -F option was incorrectly implemented as
25        --fixed_strings instead of --fixed-strings. This is an incompatible change,
26        but it seems right to fix it, and I didn't think it was worth preserving
27        the old behaviour.
28    
29    
30    Version 7.9 11-Apr-09
31  ---------------------  ---------------------
32    
33  1.  When building with support for bzlib/zlib (pcregrep) and/or readline  1.  When building with support for bzlib/zlib (pcregrep) and/or readline
# Line 17  Version 7.9 xx-xxx-09 Line 43  Version 7.9 xx-xxx-09
43      but BOOL is not.      but BOOL is not.
44    
45  3.  The pcre_config() function was treating the PCRE_MATCH_LIMIT and  3.  The pcre_config() function was treating the PCRE_MATCH_LIMIT and
46      PCRE_MATCH_LIMIT_RETURSION values as ints, when they should be long ints.      PCRE_MATCH_LIMIT_RECURSION values as ints, when they should be long ints.
47    
48  4.  The pcregrep documentation said spaces were inserted as well as colons (or  4.  The pcregrep documentation said spaces were inserted as well as colons (or
49      hyphens) following file names and line numbers when outputting matching      hyphens) following file names and line numbers when outputting matching
# Line 42  Version 7.9 xx-xxx-09 Line 68  Version 7.9 xx-xxx-09
68      correctly handled. The rule now is that both the assertion and what follows      correctly handled. The rule now is that both the assertion and what follows
69      in the first alternative must satisfy the test.      in the first alternative must satisfy the test.
70    
71  9.  If auto-callout was enabled in a pattern with a conditional group whose  9.  If auto-callout was enabled in a pattern with a conditional group whose
72      condition was an assertion, PCRE could crash during matching, both with      condition was an assertion, PCRE could crash during matching, both with
73      pcre_exec() and pcre_dfa_exec().      pcre_exec() and pcre_dfa_exec().
74    
# Line 64  Version 7.9 xx-xxx-09 Line 90  Version 7.9 xx-xxx-09
90  17. Implemented support for UTF-8 encoding in EBCDIC environments, a patch  17. Implemented support for UTF-8 encoding in EBCDIC environments, a patch
91      from Martin Jerabek that uses macro names for all relevant character and      from Martin Jerabek that uses macro names for all relevant character and
92      string constants.      string constants.
93    
94  18. Added to pcre_internal.h two configuration checks: (a) If both EBCDIC and  18. Added to pcre_internal.h two configuration checks: (a) If both EBCDIC and
95      SUPPORT_UTF8 are set, give an error; (b) If SUPPORT_UCP is set without      SUPPORT_UTF8 are set, give an error; (b) If SUPPORT_UCP is set without
96      SUPPORT_UTF8, define SUPPORT_UTF8. The "configure" script handles both of      SUPPORT_UTF8, define SUPPORT_UTF8. The "configure" script handles both of
97      these, but not everybody uses configure.      these, but not everybody uses configure.
98    
99  19. A conditional group that had only one branch was not being correctly  19. A conditional group that had only one branch was not being correctly
100      recognized as an item that could match an empty string. This meant that an      recognized as an item that could match an empty string. This meant that an
101      enclosing group might also not be so recognized, causing infinite looping      enclosing group might also not be so recognized, causing infinite looping
102      (and probably a segfault) for patterns such as ^"((?(?=[a])[^"])|b)*"$      (and probably a segfault) for patterns such as ^"((?(?=[a])[^"])|b)*"$
103      with the subject "ab", where knowledge that the repeated group can match      with the subject "ab", where knowledge that the repeated group can match
104      nothing is needed in order to break the loop.      nothing is needed in order to break the loop.
105    
106  20. If a pattern that was compiled with callouts was matched using pcre_dfa_  20. If a pattern that was compiled with callouts was matched using pcre_dfa_
107      exec(), but without supplying a callout function, matching went wrong.      exec(), but without supplying a callout function, matching went wrong.
108    
109  21. If PCRE_ERROR_MATCHLIMIT occurred during a recursion, there was a memory  21. If PCRE_ERROR_MATCHLIMIT occurred during a recursion, there was a memory
110      leak if the size of the offset vector was greater than 30. When the vector      leak if the size of the offset vector was greater than 30. When the vector
111      is smaller, the saved offsets during recursion go onto a local stack      is smaller, the saved offsets during recursion go onto a local stack
112      vector, but for larger vectors malloc() is used. It was failing to free      vector, but for larger vectors malloc() is used. It was failing to free
113      when the recursion yielded PCRE_ERROR_MATCH_LIMIT (or any other "abnormal"      when the recursion yielded PCRE_ERROR_MATCH_LIMIT (or any other "abnormal"
114      error, in fact).      error, in fact).
115    
116    22. There was a missing #ifdef SUPPORT_UTF8 round one of the variables in the
117        heapframe that is used only when UTF-8 support is enabled. This caused no
118        problem, but was untidy.
119    
120    23. Steven Van Ingelgem's patch to CMakeLists.txt to change the name
121        CMAKE_BINARY_DIR to PROJECT_BINARY_DIR so that it works when PCRE is
122        included within another project.
123    
124    24. Steven Van Ingelgem's patches to add more options to the CMake support,
125        slightly modified by me:
126    
127          (a) PCRE_BUILD_TESTS can be set OFF not to build the tests, including
128              not building pcregrep.
129    
130          (b) PCRE_BUILD_PCREGREP can be see OFF not to build pcregrep, but only
131              if PCRE_BUILD_TESTS is also set OFF, because the tests use pcregrep.
132    
133    25. Forward references, both numeric and by name, in patterns that made use of
134        duplicate group numbers, could behave incorrectly or give incorrect errors,
135        because when scanning forward to find the reference group, PCRE was not
136        taking into account the duplicate group numbers. A pattern such as
137        ^X(?3)(a)(?|(b)|(q))(Y) is an example.
138    
139    26. Changed a few more instances of "const unsigned char *" to USPTR, making
140        the feature of a custom pointer more persuasive (as requested by a user).
141    
142    27. Wrapped the definitions of fileno and isatty for Windows, which appear in
143        pcretest.c, inside #ifndefs, because it seems they are sometimes already
144        pre-defined.
145    
146    28. Added support for (*UTF8) at the start of a pattern.
147    
148    29. Arrange for flags added by the "release type" setting in CMake to be shown
149        in the configuration summary.
150    
151    
152  Version 7.8 05-Sep-08  Version 7.8 05-Sep-08
153  ---------------------  ---------------------

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