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1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
4  Version 7.1 12-Mar-07  Version 7.7 05-Mar-08
5    ---------------------
7    1.  Applied Craig's patch to sort out a long long problem: "If we can't convert
8        a string to a long long, pretend we don't even have a long long." This is
9        done by checking for the strtoq, strtoll, and _strtoi64 functions.
11    2.  Applied Craig's patch to pcrecpp.cc to restore ABI compatibility with
12        pre-7.6 versions, which defined a global no_arg variable instead of putting
13        it in the RE class. (See also #8 below.)
15    3.  Remove a line of dead code, identified by coverity and reported by Nuno
16        Lopes.
18    4.  Fixed two related pcregrep bugs involving -r with --include or --exclude:
20        (1) The include/exclude patterns were being applied to the whole pathnames
21            of files, instead of just to the final components.
23        (2) If there was more than one level of directory, the subdirectories were
24            skipped unless they satisfied the include/exclude conditions. This is
25            inconsistent with GNU grep (and could even be seen as contrary to the
26            pcregrep specification - which I improved to make it absolutely clear).
27            The action now is always to scan all levels of directory, and just
28            apply the include/exclude patterns to regular files.
30    5.  Added the --include_dir and --exclude_dir patterns to pcregrep, and used
31        --exclude_dir in the tests to avoid scanning .svn directories.
33    6.  Applied Craig's patch to the QuoteMeta function so that it escapes the
34        NUL character as backslash + 0 rather than backslash + NUL, because PCRE
35        doesn't support NULs in patterns.
37    7.  Added some missing "const"s to declarations of static tables in
38        pcre_compile.c and pcre_dfa_exec.c.
40    8.  Applied Craig's patch to pcrecpp.cc to fix a problem in OS X that was
41        caused by fix #2  above. (Subsequently also a second patch to fix the
42        first patch. And a third patch - this was a messy problem.)
44    9.  Applied Craig's patch to remove the use of push_back().
46    10. Applied Alan Lehotsky's patch to add REG_STARTEND support to the POSIX
47        matching function regexec().
50    Version 7.6 28-Jan-08
51    ---------------------
53    1.  A character class containing a very large number of characters with
54        codepoints greater than 255 (in UTF-8 mode, of course) caused a buffer
55        overflow.
57    2.  Patch to cut out the "long long" test in pcrecpp_unittest when
58        HAVE_LONG_LONG is not defined.
60    3.  Applied Christian Ehrlicher's patch to update the CMake build files to
61        bring them up to date and include new features. This patch includes:
63        - Fixed PH's badly added libz and libbz2 support.
64        - Fixed a problem with static linking.
65        - Added pcredemo. [But later removed - see 7 below.]
66        - Fixed dftables problem and added an option.
67        - Added a number of HAVE_XXX tests, including HAVE_WINDOWS_H and
68            HAVE_LONG_LONG.
69        - Added readline support for pcretest.
70        - Added an listing of the option settings after cmake has run.
72    4.  A user submitted a patch to Makefile that makes it easy to create
73        "pcre.dll" under mingw when using Configure/Make. I added stuff to
74        Makefile.am that cause it to include this special target, without
75        affecting anything else. Note that the same mingw target plus all
76        the other distribution libraries and programs are now supported
77        when configuring with CMake (see 6 below) instead of with
78        Configure/Make.
80    5.  Applied Craig's patch that moves no_arg into the RE class in the C++ code.
81        This is an attempt to solve the reported problem "pcrecpp::no_arg is not
82        exported in the Windows port". It has not yet been confirmed that the patch
83        solves the problem, but it does no harm.
85    6.  Applied Sheri's patch to CMakeLists.txt to add NON_STANDARD_LIB_PREFIX and
86        NON_STANDARD_LIB_SUFFIX for dll names built with mingw when configured
87        with CMake, and also correct the comment about stack recursion.
89    7.  Remove the automatic building of pcredemo from the ./configure system and
90        from CMakeLists.txt. The whole idea of pcredemo.c is that it is an example
91        of a program that users should build themselves after PCRE is installed, so
92        building it automatically is not really right. What is more, it gave
93        trouble in some build environments.
95    8.  Further tidies to CMakeLists.txt from Sheri and Christian.
98    Version 7.5 10-Jan-08
99    ---------------------
101    1.  Applied a patch from Craig: "This patch makes it possible to 'ignore'
102        values in parens when parsing an RE using the C++ wrapper."
104    2.  Negative specials like \S did not work in character classes in UTF-8 mode.
105        Characters greater than 255 were excluded from the class instead of being
106        included.
108    3.  The same bug as (2) above applied to negated POSIX classes such as
109        [:^space:].
111    4.  PCRECPP_STATIC was referenced in pcrecpp_internal.h, but nowhere was it
112        defined or documented. It seems to have been a typo for PCRE_STATIC, so
113        I have changed it.
115    5.  The construct (?&) was not diagnosed as a syntax error (it referenced the
116        first named subpattern) and a construct such as (?&a) would reference the
117        first named subpattern whose name started with "a" (in other words, the
118        length check was missing). Both these problems are fixed. "Subpattern name
119        expected" is now given for (?&) (a zero-length name), and this patch also
120        makes it give the same error for \k'' (previously it complained that that
121        was a reference to a non-existent subpattern).
123    6.  The erroneous patterns (?+-a) and (?-+a) give different error messages;
124        this is right because (?- can be followed by option settings as well as by
125        digits. I have, however, made the messages clearer.
127    7.  Patterns such as (?(1)a|b) (a pattern that contains fewer subpatterns
128        than the number used in the conditional) now cause a compile-time error.
129        This is actually not compatible with Perl, which accepts such patterns, but
130        treats the conditional as always being FALSE (as PCRE used to), but it
131        seems to me that giving a diagnostic is better.
133    8.  Change "alphameric" to the more common word "alphanumeric" in comments
134        and messages.
136    9.  Fix two occurrences of "backslash" in comments that should have been
137        "backspace".
139    10. Remove two redundant lines of code that can never be obeyed (their function
140        was moved elsewhere).
142    11. The program that makes PCRE's Unicode character property table had a bug
143        which caused it to generate incorrect table entries for sequences of
144        characters that have the same character type, but are in different scripts.
145        It amalgamated them into a single range, with the script of the first of
146        them. In other words, some characters were in the wrong script. There were
147        thirteen such cases, affecting characters in the following ranges:
149          U+002b0 - U+002c1
150          U+0060c - U+0060d
151          U+0061e - U+00612
152          U+0064b - U+0065e
153          U+0074d - U+0076d
154          U+01800 - U+01805
155          U+01d00 - U+01d77
156          U+01d9b - U+01dbf
157          U+0200b - U+0200f
158          U+030fc - U+030fe
159          U+03260 - U+0327f
160          U+0fb46 - U+0fbb1
161          U+10450 - U+1049d
163    12. The -o option (show only the matching part of a line) for pcregrep was not
164        compatible with GNU grep in that, if there was more than one match in a
165        line, it showed only the first of them. It now behaves in the same way as
166        GNU grep.
168    13. If the -o and -v options were combined for pcregrep, it printed a blank
169        line for every non-matching line. GNU grep prints nothing, and pcregrep now
170        does the same. The return code can be used to tell if there were any
171        non-matching lines.
173    14. Added --file-offsets and --line-offsets to pcregrep.
175    15. The pattern (?=something)(?R) was not being diagnosed as a potentially
176        infinitely looping recursion. The bug was that positive lookaheads were not
177        being skipped when checking for a possible empty match (negative lookaheads
178        and both kinds of lookbehind were skipped).
180    16. Fixed two typos in the Windows-only code in pcregrep.c, and moved the
181        inclusion of <windows.h> to before rather than after the definition of
182        INVALID_FILE_ATTRIBUTES (patch from David Byron).
184    17. Specifying a possessive quantifier with a specific limit for a Unicode
185        character property caused pcre_compile() to compile bad code, which led at
186        runtime to PCRE_ERROR_INTERNAL (-14). Examples of patterns that caused this
187        are: /\p{Zl}{2,3}+/8 and /\p{Cc}{2}+/8. It was the possessive "+" that
188        caused the error; without that there was no problem.
190    18. Added --enable-pcregrep-libz and --enable-pcregrep-libbz2.
192    19. Added --enable-pcretest-libreadline.
194    20. In pcrecpp.cc, the variable 'count' was incremented twice in
195        RE::GlobalReplace(). As a result, the number of replacements returned was
196        double what it should be. I removed one of the increments, but Craig sent a
197        later patch that removed the other one (the right fix) and added unit tests
198        that check the return values (which was not done before).
200    21. Several CMake things:
202        (1) Arranged that, when cmake is used on Unix, the libraries end up with
203            the names libpcre and libpcreposix, not just pcre and pcreposix.
205        (2) The above change means that pcretest and pcregrep are now correctly
206            linked with the newly-built libraries, not previously installed ones.
210    22. In UTF-8 mode, with newline set to "any", a pattern such as .*a.*=.b.*
211        crashed when matching a string such as a\x{2029}b (note that \x{2029} is a
212        UTF-8 newline character). The key issue is that the pattern starts .*;
213        this means that the match must be either at the beginning, or after a
214        newline. The bug was in the code for advancing after a failed match and
215        checking that the new position followed a newline. It was not taking
216        account of UTF-8 characters correctly.
218    23. PCRE was behaving differently from Perl in the way it recognized POSIX
219        character classes. PCRE was not treating the sequence [:...:] as a
220        character class unless the ... were all letters. Perl, however, seems to
221        allow any characters between [: and :], though of course it rejects as
222        unknown any "names" that contain non-letters, because all the known class
223        names consist only of letters. Thus, Perl gives an error for [[:1234:]],
224        for example, whereas PCRE did not - it did not recognize a POSIX character
225        class. This seemed a bit dangerous, so the code has been changed to be
226        closer to Perl. The behaviour is not identical to Perl, because PCRE will
227        diagnose an unknown class for, for example, [[:l\ower:]] where Perl will
228        treat it as [[:lower:]]. However, PCRE does now give "unknown" errors where
229        Perl does, and where it didn't before.
231    24. Rewrite so as to remove the single use of %n from pcregrep because in some
232        Windows environments %n is disabled by default.
235    Version 7.4 21-Sep-07
236    ---------------------
238    1.  Change 7.3/28 was implemented for classes by looking at the bitmap. This
239        means that a class such as [\s] counted as "explicit reference to CR or
240        LF". That isn't really right - the whole point of the change was to try to
241        help when there was an actual mention of one of the two characters. So now
242        the change happens only if \r or \n (or a literal CR or LF) character is
243        encountered.
245    2.  The 32-bit options word was also used for 6 internal flags, but the numbers
246        of both had grown to the point where there were only 3 bits left.
247        Fortunately, there was spare space in the data structure, and so I have
248        moved the internal flags into a new 16-bit field to free up more option
249        bits.
251    3.  The appearance of (?J) at the start of a pattern set the DUPNAMES option,
252        but did not set the internal JCHANGED flag - either of these is enough to
253        control the way the "get" function works - but the PCRE_INFO_JCHANGED
254        facility is supposed to tell if (?J) was ever used, so now (?J) at the
255        start sets both bits.
257    4.  Added options (at build time, compile time, exec time) to change \R from
258        matching any Unicode line ending sequence to just matching CR, LF, or CRLF.
260    5.  doc/pcresyntax.html was missing from the distribution.
262    6.  Put back the definition of PCRE_ERROR_NULLWSLIMIT, for backward
263        compatibility, even though it is no longer used.
265    7.  Added macro for snprintf to pcrecpp_unittest.cc and also for strtoll and
266        strtoull to pcrecpp.cc to select the available functions in WIN32 when the
267        windows.h file is present (where different names are used). [This was
268        reversed later after testing - see 16 below.]
270    8.  Changed all #include <config.h> to #include "config.h". There were also
271        some further <pcre.h> cases that I changed to "pcre.h".
273    9.  When pcregrep was used with the --colour option, it missed the line ending
274        sequence off the lines that it output.
276    10. It was pointed out to me that arrays of string pointers cause lots of
277        relocations when a shared library is dynamically loaded. A technique of
278        using a single long string with a table of offsets can drastically reduce
279        these. I have refactored PCRE in four places to do this. The result is
280        dramatic:
282          Originally:                          290
283          After changing UCP table:            187
284          After changing error message table:   43
285          After changing table of "verbs"       36
286          After changing table of Posix names   22
288        Thanks to the folks working on Gregex for glib for this insight.
290    11. --disable-stack-for-recursion caused compiling to fail unless -enable-
291        unicode-properties was also set.
293    12. Updated the tests so that they work when \R is defaulted to ANYCRLF.
295    13. Added checks for ANY and ANYCRLF to pcrecpp.cc where it previously
296        checked only for CRLF.
298    14. Added casts to pcretest.c to avoid compiler warnings.
300    15. Added Craig's patch to various pcrecpp modules to avoid compiler warnings.
302    16. Added Craig's patch to remove the WINDOWS_H tests, that were not working,
303        and instead check for _strtoi64 explicitly, and avoid the use of snprintf()
304        entirely. This removes changes made in 7 above.
306    17. The CMake files have been updated, and there is now more information about
307        building with CMake in the NON-UNIX-USE document.
310    Version 7.3 28-Aug-07
311    ---------------------
313     1. In the rejigging of the build system that eventually resulted in 7.1, the
314        line "#include <pcre.h>" was included in pcre_internal.h. The use of angle
315        brackets there is not right, since it causes compilers to look for an
316        installed pcre.h, not the version that is in the source that is being
317        compiled (which of course may be different). I have changed it back to:
319          #include "pcre.h"
321        I have a vague recollection that the change was concerned with compiling in
322        different directories, but in the new build system, that is taken care of
323        by the VPATH setting the Makefile.
325     2. The pattern .*$ when run in not-DOTALL UTF-8 mode with newline=any failed
326        when the subject happened to end in the byte 0x85 (e.g. if the last
327        character was \x{1ec5}). *Character* 0x85 is one of the "any" newline
328        characters but of course it shouldn't be taken as a newline when it is part
329        of another character. The bug was that, for an unlimited repeat of . in
330        not-DOTALL UTF-8 mode, PCRE was advancing by bytes rather than by
331        characters when looking for a newline.
333     3. A small performance improvement in the DOTALL UTF-8 mode .* case.
335     4. Debugging: adjusted the names of opcodes for different kinds of parentheses
336        in debug output.
338     5. Arrange to use "%I64d" instead of "%lld" and "%I64u" instead of "%llu" for
339        long printing in the pcrecpp unittest when running under MinGW.
341     6. ESC_K was left out of the EBCDIC table.
343     7. Change 7.0/38 introduced a new limit on the number of nested non-capturing
344        parentheses; I made it 1000, which seemed large enough. Unfortunately, the
345        limit also applies to "virtual nesting" when a pattern is recursive, and in
346        this case 1000 isn't so big. I have been able to remove this limit at the
347        expense of backing off one optimization in certain circumstances. Normally,
348        when pcre_exec() would call its internal match() function recursively and
349        immediately return the result unconditionally, it uses a "tail recursion"
350        feature to save stack. However, when a subpattern that can match an empty
351        string has an unlimited repetition quantifier, it no longer makes this
352        optimization. That gives it a stack frame in which to save the data for
353        checking that an empty string has been matched. Previously this was taken
354        from the 1000-entry workspace that had been reserved. So now there is no
355        explicit limit, but more stack is used.
357     8. Applied Daniel's patches to solve problems with the import/export magic
358        syntax that is required for Windows, and which was going wrong for the
359        pcreposix and pcrecpp parts of the library. These were overlooked when this
360        problem was solved for the main library.
362     9. There were some crude static tests to avoid integer overflow when computing
363        the size of patterns that contain repeated groups with explicit upper
364        limits. As the maximum quantifier is 65535, the maximum group length was
365        set at 30,000 so that the product of these two numbers did not overflow a
366        32-bit integer. However, it turns out that people want to use groups that
367        are longer than 30,000 bytes (though not repeat them that many times).
368        Change 7.0/17 (the refactoring of the way the pattern size is computed) has
369        made it possible to implement the integer overflow checks in a much more
370        dynamic way, which I have now done. The artificial limitation on group
371        length has been removed - we now have only the limit on the total length of
372        the compiled pattern, which depends on the LINK_SIZE setting.
374    10. Fixed a bug in the documentation for get/copy named substring when
375        duplicate names are permitted. If none of the named substrings are set, the
376        functions return PCRE_ERROR_NOSUBSTRING (7); the doc said they returned an
377        empty string.
379    11. Because Perl interprets \Q...\E at a high level, and ignores orphan \E
380        instances, patterns such as [\Q\E] or [\E] or even [^\E] cause an error,
381        because the ] is interpreted as the first data character and the
382        terminating ] is not found. PCRE has been made compatible with Perl in this
383        regard. Previously, it interpreted [\Q\E] as an empty class, and [\E] could
384        cause memory overwriting.
386    10. Like Perl, PCRE automatically breaks an unlimited repeat after an empty
387        string has been matched (to stop an infinite loop). It was not recognizing
388        a conditional subpattern that could match an empty string if that
389        subpattern was within another subpattern. For example, it looped when
390        trying to match  (((?(1)X|))*)  but it was OK with  ((?(1)X|)*)  where the
391        condition was not nested. This bug has been fixed.
393    12. A pattern like \X?\d or \P{L}?\d in non-UTF-8 mode could cause a backtrack
394        past the start of the subject in the presence of bytes with the top bit
395        set, for example "\x8aBCD".
397    13. Added Perl 5.10 experimental backtracking controls (*FAIL), (*F), (*PRUNE),
398        (*SKIP), (*THEN), (*COMMIT), and (*ACCEPT).
400    14. Optimized (?!) to (*FAIL).
402    15. Updated the test for a valid UTF-8 string to conform to the later RFC 3629.
403        This restricts code points to be within the range 0 to 0x10FFFF, excluding
404        the "low surrogate" sequence 0xD800 to 0xDFFF. Previously, PCRE allowed the
405        full range 0 to 0x7FFFFFFF, as defined by RFC 2279. Internally, it still
406        does: it's just the validity check that is more restrictive.
408    16. Inserted checks for integer overflows during escape sequence (backslash)
409        processing, and also fixed erroneous offset values for syntax errors during
410        backslash processing.
412    17. Fixed another case of looking too far back in non-UTF-8 mode (cf 12 above)
413        for patterns like [\PPP\x8a]{1,}\x80 with the subject "A\x80".
415    18. An unterminated class in a pattern like (?1)\c[ with a "forward reference"
416        caused an overrun.
418    19. A pattern like (?:[\PPa*]*){8,} which had an "extended class" (one with
419        something other than just ASCII characters) inside a group that had an
420        unlimited repeat caused a loop at compile time (while checking to see
421        whether the group could match an empty string).
423    20. Debugging a pattern containing \p or \P could cause a crash. For example,
424        [\P{Any}] did so. (Error in the code for printing property names.)
426    21. An orphan \E inside a character class could cause a crash.
428    22. A repeated capturing bracket such as (A)? could cause a wild memory
429        reference during compilation.
431    23. There are several functions in pcre_compile() that scan along a compiled
432        expression for various reasons (e.g. to see if it's fixed length for look
433        behind). There were bugs in these functions when a repeated \p or \P was
434        present in the pattern. These operators have additional parameters compared
435        with \d, etc, and these were not being taken into account when moving along
436        the compiled data. Specifically:
438        (a) A item such as \p{Yi}{3} in a lookbehind was not treated as fixed
439            length.
441        (b) An item such as \pL+ within a repeated group could cause crashes or
442            loops.
444        (c) A pattern such as \p{Yi}+(\P{Yi}+)(?1) could give an incorrect
445            "reference to non-existent subpattern" error.
447        (d) A pattern like (\P{Yi}{2}\277)? could loop at compile time.
449    24. A repeated \S or \W in UTF-8 mode could give wrong answers when multibyte
450        characters were involved (for example /\S{2}/8g with "A\x{a3}BC").
452    25. Using pcregrep in multiline, inverted mode (-Mv) caused it to loop.
454    26. Patterns such as [\P{Yi}A] which include \p or \P and just one other
455        character were causing crashes (broken optimization).
457    27. Patterns such as (\P{Yi}*\277)* (group with possible zero repeat containing
458        \p or \P) caused a compile-time loop.
460    28. More problems have arisen in unanchored patterns when CRLF is a valid line
461        break. For example, the unstudied pattern [\r\n]A does not match the string
462        "\r\nA" because change 7.0/46 below moves the current point on by two
463        characters after failing to match at the start. However, the pattern \nA
464        *does* match, because it doesn't start till \n, and if [\r\n]A is studied,
465        the same is true. There doesn't seem any very clean way out of this, but
466        what I have chosen to do makes the common cases work: PCRE now takes note
467        of whether there can be an explicit match for \r or \n anywhere in the
468        pattern, and if so, 7.0/46 no longer applies. As part of this change,
469        there's a new PCRE_INFO_HASCRORLF option for finding out whether a compiled
470        pattern has explicit CR or LF references.
472    29. Added (*CR) etc for changing newline setting at start of pattern.
475    Version 7.2 19-Jun-07
476    ---------------------
478     1. If the fr_FR locale cannot be found for test 3, try the "french" locale,
479        which is apparently normally available under Windows.
481     2. Re-jig the pcregrep tests with different newline settings in an attempt
482        to make them independent of the local environment's newline setting.
484     3. Add code to configure.ac to remove -g from the CFLAGS default settings.
486     4. Some of the "internals" tests were previously cut out when the link size
487        was not 2, because the output contained actual offsets. The recent new
488        "Z" feature of pcretest means that these can be cut out, making the tests
489        usable with all link sizes.
491     5. Implemented Stan Switzer's goto replacement for longjmp() when not using
492        stack recursion. This gives a massive performance boost under BSD, but just
493        a small improvement under Linux. However, it saves one field in the frame
494        in all cases.
496     6. Added more features from the forthcoming Perl 5.10:
498        (a) (?-n) (where n is a string of digits) is a relative subroutine or
499            recursion call. It refers to the nth most recently opened parentheses.
501        (b) (?+n) is also a relative subroutine call; it refers to the nth next
502            to be opened parentheses.
504        (c) Conditions that refer to capturing parentheses can be specified
505            relatively, for example, (?(-2)... or (?(+3)...
507        (d) \K resets the start of the current match so that everything before
508            is not part of it.
510        (e) \k{name} is synonymous with \k<name> and \k'name' (.NET compatible).
512        (f) \g{name} is another synonym - part of Perl 5.10's unification of
513            reference syntax.
515        (g) (?| introduces a group in which the numbering of parentheses in each
516            alternative starts with the same number.
518        (h) \h, \H, \v, and \V match horizontal and vertical whitespace.
520     7. Added two new calls to pcre_fullinfo(): PCRE_INFO_OKPARTIAL and
523     8. A pattern such as  (.*(.)?)*  caused pcre_exec() to fail by either not
524        terminating or by crashing. Diagnosed by Viktor Griph; it was in the code
525        for detecting groups that can match an empty string.
527     9. A pattern with a very large number of alternatives (more than several
528        hundred) was running out of internal workspace during the pre-compile
529        phase, where pcre_compile() figures out how much memory will be needed. A
530        bit of new cunning has reduced the workspace needed for groups with
531        alternatives. The 1000-alternative test pattern now uses 12 bytes of
532        workspace instead of running out of the 4096 that are available.
534    10. Inserted some missing (unsigned int) casts to get rid of compiler warnings.
536    11. Applied patch from Google to remove an optimization that didn't quite work.
537        The report of the bug said:
539          pcrecpp::RE("a*").FullMatch("aaa") matches, while
540          pcrecpp::RE("a*?").FullMatch("aaa") does not, and
541          pcrecpp::RE("a*?\\z").FullMatch("aaa") does again.
543    12. If \p or \P was used in non-UTF-8 mode on a character greater than 127
544        it matched the wrong number of bytes.
547    Version 7.1 24-Apr-07
548  ---------------------  ---------------------
550   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
# Line 136  Version 7.1 12-Mar-07 Line 679  Version 7.1 12-Mar-07
679      string at the end of a line did not allow for this case. They now check for      string at the end of a line did not allow for this case. They now check for
680      it specially.      it specially.
682    20. pcretest is supposed to handle patterns and data of any length, by
683        extending its buffers when necessary. It was getting this wrong when the
684        buffer for a data line had to be extended.
686    21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
687        CRLF as a newline sequence.
689    22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
690        out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
691        I have nevertheless tidied it up.
693    23. Added some casts to kill warnings from HP-UX ia64 compiler.
695    24. Added a man page for pcre-config.
698  Version 7.0 19-Dec-06  Version 7.0 19-Dec-06
699  ---------------------  ---------------------

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