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| author | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2018-07-11 10:06:51 +0000 |
|---|---|---|
| committer | ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069> | 2018-07-11 10:06:51 +0000 |
| commit | 66b68b51abd7c6348839ae2610bfb2916412f687 (patch) | |
| tree | 9543a8776dd09a65149731d2a0b9086d197da234 /doc/pcre2.txt | |
| parent | e560d569e1982c4f2310318cfd51b445fdde0c55 (diff) | |
| download | pcre2-66b68b51abd7c6348839ae2610bfb2916412f687.tar.gz | |
Documentation update.
git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@961 6239d852-aaf2-0410-a92c-79f79f948069
Diffstat (limited to 'doc/pcre2.txt')
| -rw-r--r-- | doc/pcre2.txt | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/doc/pcre2.txt b/doc/pcre2.txt index e772e20..449c3cb 100644 --- a/doc/pcre2.txt +++ b/doc/pcre2.txt @@ -20,11 +20,19 @@ INTRODUCTION PCRE2 is the name used for a revised API for the PCRE library, which is a set of functions, written in C, that implement regular expression pattern matching using the same syntax and semantics as Perl, with just - a few differences. Some features that appeared in Python and the origi- - nal PCRE before they appeared in Perl are also available using the - Python syntax. There is also some support for one or two .NET and Onig- - uruma syntax items, and there are options for requesting some minor - changes that give better ECMAScript (aka JavaScript) compatibility. + a few differences. After nearly two decades, the limitations of the + original API were making development increasingly difficult. The new + API is more extensible, and it was simplified by abolishing the sepa- + rate "study" optimizing function; in PCRE2, patterns are automatically + optimized where possible. Since forking from PCRE1, the code has been + extensively refactored and new features introduced. + + As well as Perl-style regular expression patterns, some features that + appeared in Python and the original PCRE before they appeared in Perl + are available using the Python syntax. There is also some support for + one or two .NET and Oniguruma syntax items, and there are options for + requesting some minor changes that give better ECMAScript (aka + JavaScript) compatibility. The source code for PCRE2 can be compiled to support 8-bit, 16-bit, or 32-bit code units, which means that up to three separate libraries may @@ -169,7 +177,7 @@ AUTHOR REVISION - Last updated: 04 March 2018 + Last updated: 11 July 2018 Copyright (c) 1997-2018 University of Cambridge. ------------------------------------------------------------------------------ |