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revision 115 by ph10, Fri Mar 9 12:23:37 2007 UTC revision 161 by ph10, Thu May 3 10:28:07 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     3. Add code to configure.ac to remove -g from the CFLAGS default settings.
14    
15     4. Some of the "internals" tests were previously cut out when the link size
16        was not 2, because the output contained actual offsets. The recent new
17        "Z" feature of pcretest means that these can be cut out, making the tests
18        usable with all link sizes.
19    
20    
21    Version 7.1 24-Apr-07
22  ---------------------  ---------------------
23    
24   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
25      that is more "standard", making use of automake and other autotools. There      that is more "standard", making use of automake and other Autotools. There
26      is some re-arrangement of the files and adjustment of comments consequent      is some re-arrangement of the files and adjustment of comments consequent
27      on this.      on this.
28    
# Line 26  Version 7.1 05-Mar-07 Line 43  Version 7.1 05-Mar-07
43      .br or .in.      .br or .in.
44    
45   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
46      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
47      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
48      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).
49    
50   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
51      Weber: (1) pcre_internal.h was missing some function renames; (2) updated      Weber: (1) pcre_internal.h was missing some function renames; (2) updated
52      makevp.bat for the current PCRE, using the additional files !compile.txt,      makevp.bat for the current PCRE, using the additional files
53      !linklib.txt, and pcregexp.pas.      makevp_c.txt, makevp_l.txt, and pcregexp.pas.
54    
55   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
56      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 77  Version 7.1 05-Mar-07
77      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
78      shared library.      shared library.
79    
80  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:
81      environments that have neither memmove() nor bcopy()) was defining its  
82      arguments as char * instead of void *.      (a) It was defining its arguments as char * instead of void *.
83    
84        (b) It was assuming that all moves were upwards in memory; this was true
85            a long time ago when I wrote it, but is no longer the case.
86    
87        The emulated memove() is provided for those environments that have neither
88        memmove() nor bcopy(). I didn't think anyone used it these days, but that
89        is clearly not the case, as these two bugs were recently reported.
90    
91  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,
92      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
93      pages, and it removes trailing spaces from listed files. It also creates      pages, and it removes trailing spaces from listed files. It also creates
94      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
95      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
96      before "make dist".      before "make dist".
97    
98  12. Fixed two fairly obscure bugs concerned with quantified caseless matching  12. Fixed two fairly obscure bugs concerned with quantified caseless matching
99      with Unicode property support.      with Unicode property support.
100    
101      (a) For a maximizing quantifier, if the two different cases of the      (a) For a maximizing quantifier, if the two different cases of the
102          character were of different lengths in their UTF-8 codings (there are          character were of different lengths in their UTF-8 codings (there are
103          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
104          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
105          were both the same length.          were both the same length.
106    
107      (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
108          recursion during matching, it was not correctly preserving the data for          recursion during matching, it was not correctly preserving the data for
109          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
110          while processing a minimizing repeat. If the check also involved          while processing a minimizing repeat. If the check also involved
111          matching a wide character, but failed, corruption could cause an          matching a wide character, but failed, corruption could cause an
112          erroneous result when trying to check for a repeat of the original          erroneous result when trying to check for a repeat of the original
113          character.          character.
114    
115    13. Some tidying changes to the testing mechanism:
116    
117        (a) The RunTest script now detects the internal link size and whether there
118            is UTF-8 and UCP support by running ./pcretest -C instead of relying on
119            values substituted by "configure". (The RunGrepTest script already did
120            this for UTF-8.) The configure.ac script no longer substitutes the
121            relevant variables.
122    
123        (b) The debugging options /B and /D in pcretest show the compiled bytecode
124            with length and offset values. This means that the output is different
125            for different internal link sizes. Test 2 is skipped for link sizes
126            other than 2 because of this, bypassing the problem. Unfortunately,
127            there was also a test in test 3 (the locale tests) that used /B and
128            failed for link sizes other than 2. Rather than cut the whole test out,
129            I have added a new /Z option to pcretest that replaces the length and
130            offset values with spaces. This is now used to make test 3 independent
131            of link size. (Test 2 will be tidied up later.)
132    
133    14. If erroroffset was passed as NULL to pcre_compile, it provoked a
134        segmentation fault instead of returning the appropriate error message.
135    
136    15. In multiline mode when the newline sequence was set to "any", the pattern
137        ^$ would give a match between the \r and \n of a subject such as "A\r\nB".
138        This doesn't seem right; it now treats the CRLF combination as the line
139        ending, and so does not match in that case. It's only a pattern such as ^$
140        that would hit this one: something like ^ABC$ would have failed after \r
141        and then tried again after \r\n.
142    
143    16. Changed the comparison command for RunGrepTest from "diff -u" to "diff -ub"
144        in an attempt to make files that differ only in their line terminators
145        compare equal. This works on Linux.
146    
147    17. Under certain error circumstances pcregrep might try to free random memory
148        as it exited. This is now fixed, thanks to valgrind.
149    
150    19. In pcretest, if the pattern /(?m)^$/g<any> was matched against the string
151        "abc\r\n\r\n", it found an unwanted second match after the second \r. This
152        was because its rules for how to advance for /g after matching an empty
153        string at the end of a line did not allow for this case. They now check for
154        it specially.
155    
156    20. pcretest is supposed to handle patterns and data of any length, by
157        extending its buffers when necessary. It was getting this wrong when the
158        buffer for a data line had to be extended.
159    
160    21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
161        CRLF as a newline sequence.
162    
163    22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
164        out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
165        I have nevertheless tidied it up.
166    
167    23. Added some casts to kill warnings from HP-UX ia64 compiler.
168    
169    24. Added a man page for pcre-config.
170    
171    
172  Version 7.0 19-Dec-06  Version 7.0 19-Dec-06
173  ---------------------  ---------------------

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