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revision 116 by ph10, Fri Mar 9 15:23:02 2007 UTC revision 158 by ph10, Tue May 1 10:30:14 2007 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 7.1 05-Mar-07  Version 7.2 01-May-07
5    ---------------------
6    
7     1. If the fr_FR locale cannot be found for test 3, try the "french" locale,
8        which is apparently normally available under Windows.
9    
10     2. Re-jig the pcregrep tests with different newline settings in an attempt
11        to make them independent of the local environment's newline setting.
12    
13    
14    Version 7.1 24-Apr-07
15  ---------------------  ---------------------
16    
17   1. Applied Bob Rossi and Daniel G's patches to convert the build system to one   1. Applied Bob Rossi and Daniel G's patches to convert the build system to one
18      that is more "standard", making use of automake and other autotools. There      that is more "standard", making use of automake and other Autotools. There
19      is some re-arrangement of the files and adjustment of comments consequent      is some re-arrangement of the files and adjustment of comments consequent
20      on this.      on this.
21    
# Line 26  Version 7.1 05-Mar-07 Line 36  Version 7.1 05-Mar-07
36      .br or .in.      .br or .in.
37    
38   4. Updated comments in configure.ac that get placed in config.h.in and also   4. Updated comments in configure.ac that get placed in config.h.in and also
39      arranged for config.h to be included in the distribution, with the name      arranged for config.h to be included in the distribution, with the name
40      config.h.generic, for the benefit of those who have to compile without      config.h.generic, for the benefit of those who have to compile without
41      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).
42    
43   5. Updated the support (such as it is) for Virtual Pascal, thanks to Stefan   5. Updated the support (such as it is) for Virtual Pascal, thanks to Stefan
44      Weber: (1) pcre_internal.h was missing some function renames; (2) updated      Weber: (1) pcre_internal.h was missing some function renames; (2) updated
45      makevp.bat for the current PCRE, using the additional files !compile.txt,      makevp.bat for the current PCRE, using the additional files
46      !linklib.txt, and pcregexp.pas.      makevp_c.txt, makevp_l.txt, and pcregexp.pas.
47    
48   6. A Windows user reported a minor discrepancy with test 2, which turned out   6. A Windows user reported a minor discrepancy with test 2, which turned out
49      to be caused by a trailing space on an input line that had got lost in his      to be caused by a trailing space on an input line that had got lost in his
# Line 60  Version 7.1 05-Mar-07 Line 70  Version 7.1 05-Mar-07
70      called when UTF-8 support is disabled. Otherwise there are problems with a      called when UTF-8 support is disabled. Otherwise there are problems with a
71      shared library.      shared library.
72    
73  10. The emulated memmove() function in pcre_internal.h (provided for those  10. Fixed two bugs in the emulated memmove() function in pcre_internal.h:
74      environments that have neither memmove() nor bcopy()) was defining its  
75      arguments as char * instead of void *.      (a) It was defining its arguments as char * instead of void *.
76    
77        (b) It was assuming that all moves were upwards in memory; this was true
78            a long time ago when I wrote it, but is no longer the case.
79    
80        The emulated memove() is provided for those environments that have neither
81        memmove() nor bcopy(). I didn't think anyone used it these days, but that
82        is clearly not the case, as these two bugs were recently reported.
83    
84  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,
85      and Detrail to create the HTML documentation, the .txt form of the man      and Detrail to create the HTML documentation, the .txt form of the man
86      pages, and it removes trailing spaces from listed files. It also creates      pages, and it removes trailing spaces from listed files. It also creates
87      pcre.h.generic and config.h.generic from pcre.h and config.h. In the latter      pcre.h.generic and config.h.generic from pcre.h and config.h. In the latter
88      case, it wraps all the #defines with #ifndefs. This script should be run      case, it wraps all the #defines with #ifndefs. This script should be run
89      before "make dist".      before "make dist".
90    
91  12. Fixed two fairly obscure bugs concerned with quantified caseless matching  12. Fixed two fairly obscure bugs concerned with quantified caseless matching
92      with Unicode property support.      with Unicode property support.
93    
94      (a) For a maximizing quantifier, if the two different cases of the      (a) For a maximizing quantifier, if the two different cases of the
95          character were of different lengths in their UTF-8 codings (there are          character were of different lengths in their UTF-8 codings (there are
96          some cases like this - I found 11), and the matching function had to          some cases like this - I found 11), and the matching function had to
97          back up over a mixture of the two cases, it incorrectly assumed they          back up over a mixture of the two cases, it incorrectly assumed they
98          were both the same length.          were both the same length.
99    
100      (b) When PCRE was configured to use the heap rather than the stack for      (b) When PCRE was configured to use the heap rather than the stack for
101          recursion during matching, it was not correctly preserving the data for          recursion during matching, it was not correctly preserving the data for
102          the other case of a UTF-8 character when checking ahead for a match          the other case of a UTF-8 character when checking ahead for a match
103          while processing a minimizing repeat. If the check also involved          while processing a minimizing repeat. If the check also involved
104          matching a wide character, but failed, corruption could cause an          matching a wide character, but failed, corruption could cause an
105          erroneous result when trying to check for a repeat of the original          erroneous result when trying to check for a repeat of the original
106          character.          character.
107    
108  13. Some tidying changes to the testing mechanism:  13. Some tidying changes to the testing mechanism:
109    
110      (a) The RunTest script now detects the internal link size and whether there      (a) The RunTest script now detects the internal link size and whether there
111          is UTF-8 and UCP support by running ./pcretest -C instead of relying on          is UTF-8 and UCP support by running ./pcretest -C instead of relying on
112          values substituted by "configure". (The RunGrepTest script already did          values substituted by "configure". (The RunGrepTest script already did
113          this for UTF-8.) The configure.ac script no longer substitutes the          this for UTF-8.) The configure.ac script no longer substitutes the
114          relevant variables.          relevant variables.
115    
116      (b) The debugging options /B and /D in pcretest show the compiled bytecode      (b) The debugging options /B and /D in pcretest show the compiled bytecode
117          with length and offset values. This means that the output is different          with length and offset values. This means that the output is different
118          for different internal link sizes. Test 2 is skipped for link sizes          for different internal link sizes. Test 2 is skipped for link sizes
119          other than 2 because of this, bypassing the problem. Unfortunately,          other than 2 because of this, bypassing the problem. Unfortunately,
120          there was also a test in test 3 (the locale tests) that used /B and          there was also a test in test 3 (the locale tests) that used /B and
121          failed for link sizes other than 2. Rather than cut the whole test out,          failed for link sizes other than 2. Rather than cut the whole test out,
122          I have added a new /Z option to pcretest that replaces the length and          I have added a new /Z option to pcretest that replaces the length and
123          offset values with spaces. This is now used to make test 3 independent          offset values with spaces. This is now used to make test 3 independent
124          of link size.          of link size. (Test 2 will be tidied up later.)
125    
126    14. If erroroffset was passed as NULL to pcre_compile, it provoked a
127        segmentation fault instead of returning the appropriate error message.
128    
129    15. In multiline mode when the newline sequence was set to "any", the pattern
130        ^$ would give a match between the \r and \n of a subject such as "A\r\nB".
131        This doesn't seem right; it now treats the CRLF combination as the line
132        ending, and so does not match in that case. It's only a pattern such as ^$
133        that would hit this one: something like ^ABC$ would have failed after \r
134        and then tried again after \r\n.
135    
136    16. Changed the comparison command for RunGrepTest from "diff -u" to "diff -ub"
137        in an attempt to make files that differ only in their line terminators
138        compare equal. This works on Linux.
139    
140    17. Under certain error circumstances pcregrep might try to free random memory
141        as it exited. This is now fixed, thanks to valgrind.
142    
143    19. In pcretest, if the pattern /(?m)^$/g<any> was matched against the string
144        "abc\r\n\r\n", it found an unwanted second match after the second \r. This
145        was because its rules for how to advance for /g after matching an empty
146        string at the end of a line did not allow for this case. They now check for
147        it specially.
148    
149    20. pcretest is supposed to handle patterns and data of any length, by
150        extending its buffers when necessary. It was getting this wrong when the
151        buffer for a data line had to be extended.
152    
153    21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
154        CRLF as a newline sequence.
155    
156    22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
157        out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
158        I have nevertheless tidied it up.
159    
160    23. Added some casts to kill warnings from HP-UX ia64 compiler.
161    
162    24. Added a man page for pcre-config.
163    
164    
165  Version 7.0 19-Dec-06  Version 7.0 19-Dec-06

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