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Revision 53 - (show annotations) (download)
Sat Feb 24 21:39:42 2007 UTC (7 years, 8 months ago) by nigel
File size: 3518 byte(s)
Load pcre-3.5 into code/trunk.

1 News about PCRE releases
2 ------------------------
3
4 Release 3.5 15-Aug-01
5 ---------------------
6
7 1. The configuring system has been upgraded to use later versions of autoconf
8 and libtool. By default it builds both a shared and a static library if the OS
9 supports it. You can use --disable-shared or --disable-static on the configure
10 command if you want only one of them.
11
12 2. The pcretest utility is now installed along with pcregrep because it is
13 useful for users (to test regexs) and by doing this, it automatically gets
14 relinked by libtool. The documentation has been turned into a man page, so
15 there are now .1, .txt, and .html versions in /doc.
16
17 3. Upgrades to pcregrep:
18 (i) Added long-form option names like gnu grep.
19 (ii) Added --help to list all options with an explanatory phrase.
20 (iii) Added -r, --recursive to recurse into sub-directories.
21 (iv) Added -f, --file to read patterns from a file.
22
23 4. Added --enable-newline-is-cr and --enable-newline-is-lf to the configure
24 script, to force use of CR or LF instead of \n in the source. On non-Unix
25 systems, the value can be set in config.h.
26
27 5. The limit of 200 on non-capturing parentheses is a _nesting_ limit, not an
28 absolute limit. Changed the text of the error message to make this clear, and
29 likewise updated the man page.
30
31 6. The limit of 99 on the number of capturing subpatterns has been removed.
32 The new limit is 65535, which I hope will not be a "real" limit.
33
34
35 Release 3.3 01-Aug-00
36 ---------------------
37
38 There is some support for UTF-8 character strings. This is incomplete and
39 experimental. The documentation describes what is and what is not implemented.
40 Otherwise, this is just a bug-fixing release.
41
42
43 Release 3.0 01-Feb-00
44 ---------------------
45
46 1. A "configure" script is now used to configure PCRE for Unix systems. It
47 builds a Makefile, a config.h file, and the pcre-config script.
48
49 2. PCRE is built as a shared library by default.
50
51 3. There is support for POSIX classes such as [:alpha:].
52
53 5. There is an experimental recursion feature.
54
55 ----------------------------------------------------------------------------
56 IMPORTANT FOR THOSE UPGRADING FROM VERSIONS BEFORE 2.00
57
58 Please note that there has been a change in the API such that a larger
59 ovector is required at matching time, to provide some additional workspace.
60 The new man page has details. This change was necessary in order to support
61 some of the new functionality in Perl 5.005.
62
63 IMPORTANT FOR THOSE UPGRADING FROM VERSION 2.00
64
65 Another (I hope this is the last!) change has been made to the API for the
66 pcre_compile() function. An additional argument has been added to make it
67 possible to pass over a pointer to character tables built in the current
68 locale by pcre_maketables(). To use the default tables, this new arguement
69 should be passed as NULL.
70
71 IMPORTANT FOR THOSE UPGRADING FROM VERSION 2.05
72
73 Yet another (and again I hope this really is the last) change has been made
74 to the API for the pcre_exec() function. An additional argument has been
75 added to make it possible to start the match other than at the start of the
76 subject string. This is important if there are lookbehinds. The new man
77 page has the details, but you just want to convert existing programs, all
78 you need to do is to stick in a new fifth argument to pcre_exec(), with a
79 value of zero. For example, change
80
81 pcre_exec(pattern, extra, subject, length, options, ovec, ovecsize)
82 to
83 pcre_exec(pattern, extra, subject, length, 0, options, ovec, ovecsize)
84
85 ****

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