| 1 |
News about PCRE releases |
News about PCRE releases |
| 2 |
------------------------ |
------------------------ |
| 3 |
|
|
| 4 |
|
|
| 5 |
|
Release 7.2 19-Jun-07 |
| 6 |
|
--------------------- |
| 7 |
|
|
| 8 |
|
WARNING: saved patterns that were compiled by earlier versions of PCRE must be |
| 9 |
|
recompiled for use with 7.2 (necessitated by the addition of \K, \h, \H, \v, |
| 10 |
|
and \V). |
| 11 |
|
|
| 12 |
|
Correction to the notes for 7.1: the note about shared libraries for Windows is |
| 13 |
|
wrong. Previously, three libraries were built, but each could function |
| 14 |
|
independently. For example, the pcreposix library also included all the |
| 15 |
|
functions from the basic pcre library. The change is that the three libraries |
| 16 |
|
are no longer independent. They are like the Unix libraries. To use the |
| 17 |
|
pcreposix functions, for example, you need to link with both the pcreposix and |
| 18 |
|
the basic pcre library. |
| 19 |
|
|
| 20 |
|
Some more features from Perl 5.10 have been added: |
| 21 |
|
|
| 22 |
|
(?-n) and (?+n) relative references for recursion and subroutines. |
| 23 |
|
|
| 24 |
|
(?(-n) and (?(+n) relative references as conditions. |
| 25 |
|
|
| 26 |
|
\k{name} and \g{name} are synonyms for \k<name>. |
| 27 |
|
|
| 28 |
|
\K to reset the start of the matched string; for example, (foo)\Kbar |
| 29 |
|
matches bar preceded by foo, but only sets bar as the matched string. |
| 30 |
|
|
| 31 |
|
(?| introduces a group where the capturing parentheses in each alternative |
| 32 |
|
start from the same number; for example, (?|(abc)|(xyz)) sets capturing |
| 33 |
|
parentheses number 1 in both cases. |
| 34 |
|
|
| 35 |
|
\h, \H, \v, \V match horizontal and vertical whitespace, respectively. |
| 36 |
|
|
| 37 |
|
|
| 38 |
|
Release 7.1 24-Apr-07 |
| 39 |
|
--------------------- |
| 40 |
|
|
| 41 |
|
There is only one new feature in this release: a linebreak setting of |
| 42 |
|
PCRE_NEWLINE_ANYCRLF. It is a cut-down version of PCRE_NEWLINE_ANY, which |
| 43 |
|
recognizes only CRLF, CR, and LF as linebreaks. |
| 44 |
|
|
| 45 |
|
A few bugs are fixed (see ChangeLog for details), but the major change is a |
| 46 |
|
complete re-implementation of the build system. This now has full Autotools |
| 47 |
|
support and so is now "standard" in some sense. It should help with compiling |
| 48 |
|
PCRE in a wide variety of environments. |
| 49 |
|
|
| 50 |
|
NOTE: when building shared libraries for Windows, three dlls are now built, |
| 51 |
|
called libpcre, libpcreposix, and libpcrecpp. Previously, everything was |
| 52 |
|
included in a single dll. |
| 53 |
|
|
| 54 |
|
Another important change is that the dftables auxiliary program is no longer |
| 55 |
|
compiled and run at "make" time by default. Instead, a default set of character |
| 56 |
|
tables (assuming ASCII coding) is used. If you want to use dftables to generate |
| 57 |
|
the character tables as previously, add --enable-rebuild-chartables to the |
| 58 |
|
"configure" command. You must do this if you are compiling PCRE to run on a |
| 59 |
|
system that uses EBCDIC code. |
| 60 |
|
|
| 61 |
|
There is a discussion about character tables in the README file. The default is |
| 62 |
|
not to use dftables so that that there is no problem when cross-compiling. |
| 63 |
|
|
| 64 |
|
|
| 65 |
|
Release 7.0 19-Dec-06 |
| 66 |
|
--------------------- |
| 67 |
|
|
| 68 |
|
This release has a new major number because there have been some internal |
| 69 |
|
upheavals to facilitate the addition of new optimizations and other facilities, |
| 70 |
|
and to make subsequent maintenance and extension easier. Compilation is likely |
| 71 |
|
to be a bit slower, but there should be no major effect on runtime performance. |
| 72 |
|
Previously compiled patterns are NOT upwards compatible with this release. If |
| 73 |
|
you have saved compiled patterns from a previous release, you will have to |
| 74 |
|
re-compile them. Important changes that are visible to users are: |
| 75 |
|
|
| 76 |
|
1. The Unicode property tables have been updated to Unicode 5.0.0, which adds |
| 77 |
|
some more scripts. |
| 78 |
|
|
| 79 |
|
2. The option PCRE_NEWLINE_ANY causes PCRE to recognize any Unicode newline |
| 80 |
|
sequence as a newline. |
| 81 |
|
|
| 82 |
|
3. The \R escape matches a single Unicode newline sequence as a single unit. |
| 83 |
|
|
| 84 |
|
4. New features that will appear in Perl 5.10 are now in PCRE. These include |
| 85 |
|
alternative Perl syntax for named parentheses, and Perl syntax for |
| 86 |
|
recursion. |
| 87 |
|
|
| 88 |
|
5. The C++ wrapper interface has been extended by the addition of a |
| 89 |
|
QuoteMeta function and the ability to allow copy construction and |
| 90 |
|
assignment. |
| 91 |
|
|
| 92 |
|
For a complete list of changes, see the ChangeLog file. |
| 93 |
|
|
| 94 |
|
|
| 95 |
Release 6.7 04-Jul-06 |
Release 6.7 04-Jul-06 |
| 96 |
--------------------- |
--------------------- |
| 97 |
|
|
Parent Directory
| 
Revision Log
| 
Patch