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News about PCRE releases |
News about PCRE releases |
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Release 7.0 23-Nov-06 |
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Release 7.2 30-Apr-07 |
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WARNING: saved patterns that were compiled by earlier versions of PCRE must be |
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recompiled for use with 7.2 (necessitated by the addition of \K). |
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Correction to the notes for 7.1: the note about shared libraries for Windows is |
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wrong. Previously, three libraries were built, but each could function |
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independently. For example, the pcreposix library also included all the |
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functions from the basic pcre library. The change is that the three libraries |
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are no longer independent. They are like the Unix libraries. To use the |
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pcreposix functions, for example, you need to link with both the pcreposix and |
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the basic pcre library. |
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Some more features from Perl 5.10 have been added: |
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(?-n) and (?+n) relative references for recursion and subroutines. |
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(Not sure if this one is actually in Perl 5.10) |
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(?(-n) and (?(+n) relative references as conditions. |
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\K to reset the start of the matched string; for example, (foo)\Kbar |
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matches bar preceded by foo, but only sets bar as the matched string. |
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(?| introduces a group where the capturing parentheses in each alternative |
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start from the same number; for example, (?|(abc)|(xyz)) sets capturing |
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parentheses number 1 in both cases. |
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Release 7.1 24-Apr-07 |
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There is only one new feature in this release: a linebreak setting of |
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PCRE_NEWLINE_ANYCRLF. It is a cut-down version of PCRE_NEWLINE_ANY, which |
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recognizes only CRLF, CR, and LF as linebreaks. |
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A few bugs are fixed (see ChangeLog for details), but the major change is a |
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complete re-implementation of the build system. This now has full Autotools |
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support and so is now "standard" in some sense. It should help with compiling |
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PCRE in a wide variety of environments. |
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NOTE: when building shared libraries for Windows, three dlls are now built, |
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called libpcre, libpcreposix, and libpcrecpp. Previously, everything was |
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included in a single dll. |
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Another important change is that the dftables auxiliary program is no longer |
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compiled and run at "make" time by default. Instead, a default set of character |
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tables (assuming ASCII coding) is used. If you want to use dftables to generate |
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the character tables as previously, add --enable-rebuild-chartables to the |
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"configure" command. You must do this if you are compiling PCRE to run on a |
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system that uses EBCDIC code. |
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There is a discussion about character tables in the README file. The default is |
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not to use dftables so that that there is no problem when cross-compiling. |
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Release 7.0 19-Dec-06 |
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This release has a new major number because there have been some internal |
This release has a new major number because there have been some internal |
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