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