Revision: 961
http://www.exim.org/viewvc/pcre2?view=rev&revision=961
Author: ph10
Date: 2018-07-11 11:06:51 +0100 (Wed, 11 Jul 2018)
Log Message:
-----------
Documentation update.
Modified Paths:
--------------
code/trunk/doc/html/pcre2.html
code/trunk/doc/pcre2.3
code/trunk/doc/pcre2.txt
Modified: code/trunk/doc/html/pcre2.html
===================================================================
--- code/trunk/doc/html/pcre2.html 2018-07-11 09:48:32 UTC (rev 960)
+++ code/trunk/doc/html/pcre2.html 2018-07-11 10:06:51 UTC (rev 961)
@@ -23,14 +23,21 @@
<P>
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 original PCRE before they appeared in
-Perl are also 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.
+using the same syntax and semantics as Perl, with just 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 separate "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.
</P>
<P>
+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.
+</P>
+<P>
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 be installed.
The original work to extend PCRE to 16-bit and 32-bit code units was done by
@@ -191,7 +198,7 @@
</P>
<br><a name="SEC5" href="#TOC1">REVISION</a><br>
<P>
-Last updated: 04 March 2018
+Last updated: 11 July 2018
<br>
Copyright © 1997-2018 University of Cambridge.
<br>
Modified: code/trunk/doc/pcre2.3
===================================================================
--- code/trunk/doc/pcre2.3 2018-07-11 09:48:32 UTC (rev 960)
+++ code/trunk/doc/pcre2.3 2018-07-11 10:06:51 UTC (rev 961)
@@ -1,4 +1,4 @@
-.TH PCRE2 3 "04 March 2018" "PCRE2 10.32"
+.TH PCRE2 3 "11 July 2018" "PCRE2 10.32"
.SH NAME
PCRE2 - Perl-compatible regular expressions (revised API)
.SH INTRODUCTION
@@ -6,13 +6,19 @@
.sp
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 original PCRE before they appeared in
-Perl are also 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.
+using the same syntax and semantics as Perl, with just 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 separate "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.
.P
+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.
+.P
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 be installed.
The original work to extend PCRE to 16-bit and 32-bit code units was done by
@@ -191,6 +197,6 @@
.rs
.sp
.nf
-Last updated: 04 March 2018
+Last updated: 11 July 2018
Copyright (c) 1997-2018 University of Cambridge.
.fi
Modified: code/trunk/doc/pcre2.txt
===================================================================
--- code/trunk/doc/pcre2.txt 2018-07-11 09:48:32 UTC (rev 960)
+++ code/trunk/doc/pcre2.txt 2018-07-11 10:06:51 UTC (rev 961)
@@ -20,12 +20,20 @@
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
be installed. The original work to extend PCRE to 16-bit and 32-bit
@@ -169,7 +177,7 @@
REVISION
- Last updated: 04 March 2018
+ Last updated: 11 July 2018
Copyright (c) 1997-2018 University of Cambridge.
------------------------------------------------------------------------------
