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revision 119 by ph10, Mon Mar 12 09:29:45 2007 UTC revision 164 by ph10, Fri May 4 15:11:14 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     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     5. Implemented Stan Switzer's goto replacement for longjmp() when not using
21        stack recursion. This gives a massive performance boost under BSD, but just
22        a small improvement under Linux. However, it saves one field in the frame
23        in all cases.
24    
25    
26    Version 7.1 24-Apr-07
27  ---------------------  ---------------------
28    
29   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
30      that is more "standard", making use of automake and other autotools. There      that is more "standard", making use of automake and other Autotools. There
31      is some re-arrangement of the files and adjustment of comments consequent      is some re-arrangement of the files and adjustment of comments consequent
32      on this.      on this.
33    
# Line 26  Version 7.1 05-Mar-07 Line 48  Version 7.1 05-Mar-07
48      .br or .in.      .br or .in.
49    
50   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
51      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
52      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
53      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).      Autotools (compare pcre.h, which is now distributed as pcre.h.generic).
54    
55   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
56      Weber: (1) pcre_internal.h was missing some function renames; (2) updated      Weber: (1) pcre_internal.h was missing some function renames; (2) updated
57      makevp.bat for the current PCRE, using the additional files !compile.txt,      makevp.bat for the current PCRE, using the additional files
58      !linklib.txt, and pcregexp.pas.      makevp_c.txt, makevp_l.txt, and pcregexp.pas.
59    
60   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
61      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 63  Version 7.1 05-Mar-07 Line 85  Version 7.1 05-Mar-07
85  10. Fixed two bugs in the emulated memmove() function in pcre_internal.h:  10. Fixed two bugs in the emulated memmove() function in pcre_internal.h:
86    
87      (a) It was defining its arguments as char * instead of void *.      (a) It was defining its arguments as char * instead of void *.
88    
89      (b) It was assuming that all moves were upwards in memory; this was true      (b) It was assuming that all moves were upwards in memory; this was true
90          a long time ago when I wrote it, but is no longer the case.          a long time ago when I wrote it, but is no longer the case.
91    
92      The emulated memove() is provided for those environments that have neither      The emulated memove() is provided for those environments that have neither
93      memmove() nor bcopy(). I didn't think anyone used it these days, but that      memmove() nor bcopy(). I didn't think anyone used it these days, but that
94      is clearly not the case, as these two bugs were recently reported.      is clearly not the case, as these two bugs were recently reported.
95    
96  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,  11. The script PrepareRelease is now distributed: it calls 132html, CleanTxt,
97      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
98      pages, and it removes trailing spaces from listed files. It also creates      pages, and it removes trailing spaces from listed files. It also creates
99      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
100      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
101      before "make dist".      before "make dist".
102    
103  12. Fixed two fairly obscure bugs concerned with quantified caseless matching  12. Fixed two fairly obscure bugs concerned with quantified caseless matching
104      with Unicode property support.      with Unicode property support.
105    
106      (a) For a maximizing quantifier, if the two different cases of the      (a) For a maximizing quantifier, if the two different cases of the
107          character were of different lengths in their UTF-8 codings (there are          character were of different lengths in their UTF-8 codings (there are
108          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
109          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
110          were both the same length.          were both the same length.
111    
112      (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
113          recursion during matching, it was not correctly preserving the data for          recursion during matching, it was not correctly preserving the data for
114          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
115          while processing a minimizing repeat. If the check also involved          while processing a minimizing repeat. If the check also involved
116          matching a wide character, but failed, corruption could cause an          matching a wide character, but failed, corruption could cause an
117          erroneous result when trying to check for a repeat of the original          erroneous result when trying to check for a repeat of the original
118          character.          character.
119    
120  13. Some tidying changes to the testing mechanism:  13. Some tidying changes to the testing mechanism:
121    
122      (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
123          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
124          values substituted by "configure". (The RunGrepTest script already did          values substituted by "configure". (The RunGrepTest script already did
125          this for UTF-8.) The configure.ac script no longer substitutes the          this for UTF-8.) The configure.ac script no longer substitutes the
126          relevant variables.          relevant variables.
127    
128      (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
129          with length and offset values. This means that the output is different          with length and offset values. This means that the output is different
130          for different internal link sizes. Test 2 is skipped for link sizes          for different internal link sizes. Test 2 is skipped for link sizes
131          other than 2 because of this, bypassing the problem. Unfortunately,          other than 2 because of this, bypassing the problem. Unfortunately,
132          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
133          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,
134          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
135          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
136          of link size.          of link size. (Test 2 will be tidied up later.)
137    
138  14. If erroroffset was passed as NULL to pcre_compile, it provoked a  14. If erroroffset was passed as NULL to pcre_compile, it provoked a
139      segmentation fault instead of giving the appropriate error message.      segmentation fault instead of returning the appropriate error message.
140    
141    15. In multiline mode when the newline sequence was set to "any", the pattern
142        ^$ would give a match between the \r and \n of a subject such as "A\r\nB".
143        This doesn't seem right; it now treats the CRLF combination as the line
144        ending, and so does not match in that case. It's only a pattern such as ^$
145        that would hit this one: something like ^ABC$ would have failed after \r
146        and then tried again after \r\n.
147    
148    16. Changed the comparison command for RunGrepTest from "diff -u" to "diff -ub"
149        in an attempt to make files that differ only in their line terminators
150        compare equal. This works on Linux.
151    
152    17. Under certain error circumstances pcregrep might try to free random memory
153        as it exited. This is now fixed, thanks to valgrind.
154    
155    19. In pcretest, if the pattern /(?m)^$/g<any> was matched against the string
156        "abc\r\n\r\n", it found an unwanted second match after the second \r. This
157        was because its rules for how to advance for /g after matching an empty
158        string at the end of a line did not allow for this case. They now check for
159        it specially.
160    
161    20. pcretest is supposed to handle patterns and data of any length, by
162        extending its buffers when necessary. It was getting this wrong when the
163        buffer for a data line had to be extended.
164    
165    21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
166        CRLF as a newline sequence.
167    
168    22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
169        out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
170        I have nevertheless tidied it up.
171    
172    23. Added some casts to kill warnings from HP-UX ia64 compiler.
173    
174    24. Added a man page for pcre-config.
175    
176    
177  Version 7.0 19-Dec-06  Version 7.0 19-Dec-06
178  ---------------------  ---------------------

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