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Allow non-ASCII in group names when UTF is set; revise group naming terminology

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in documentation to use "capture group", as Perl does.
This commit is contained in:
Philip.Hazel
2019-02-06 18:11:36 +00:00
parent a657d4cff8
commit d7b10a57d1
60 changed files with 4236 additions and 4025 deletions
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@@ -424,20 +424,23 @@ but some of them use Unicode properties if PCRE2_UCP is set. You can use
<br><a name="SEC13" href="#TOC1">CAPTURING</a><br>
<P>
<pre>
(...) capturing group
(?&#60;name&#62;...) named capturing group (Perl)
(?'name'...) named capturing group (Perl)
(?P&#60;name&#62;...) named capturing group (Python)
(?:...) non-capturing group
(?|...) non-capturing group; reset group numbers for
capturing groups in each alternative
</PRE>
(...) capture group
(?&#60;name&#62;...) named capture group (Perl)
(?'name'...) named capture group (Perl)
(?P&#60;name&#62;...) named capture group (Python)
(?:...) non-capture group
(?|...) non-capture group; reset group numbers for
capture groups in each alternative
</pre>
In non-UTF modes, names may contain underscores and ASCII letters and digits;
in UTF modes, any Unicode letters and Unicode decimal digits are permitted. In
both cases, a name must not start with a digit.
</P>
<br><a name="SEC14" href="#TOC1">ATOMIC GROUPS</a><br>
<P>
<pre>
(?&#62;...) atomic, non-capturing group
(*atomic:...) atomic, non-capturing group
(?&#62;...) atomic non-capture group
(*atomic:...) atomic non-capture group
</PRE>
</P>
<br><a name="SEC15" href="#TOC1">COMMENT</a><br>
@@ -465,7 +468,7 @@ of the group.
Unsetting x or xx unsets both. Several options may be set at once, and a
mixture of setting and unsetting such as (?i-x) is allowed, but there may be
only one hyphen. Setting (but no unsetting) is allowed after (?^ for example
(?^in). An option setting may appear at the start of a non-capturing group, for
(?^in). An option setting may appear at the start of a non-capture group, for
example (?i:...).
</P>
<P>
@@ -565,19 +568,19 @@ Each top-level branch of a lookbehind must be of a fixed length.
<P>
<pre>
(?R) recurse whole pattern
(?n) call subpattern by absolute number
(?+n) call subpattern by relative number
(?-n) call subpattern by relative number
(?&name) call subpattern by name (Perl)
(?P&#62;name) call subpattern by name (Python)
\g&#60;name&#62; call subpattern by name (Oniguruma)
\g'name' call subpattern by name (Oniguruma)
\g&#60;n&#62; call subpattern by absolute number (Oniguruma)
\g'n' call subpattern by absolute number (Oniguruma)
\g&#60;+n&#62; call subpattern by relative number (PCRE2 extension)
\g'+n' call subpattern by relative number (PCRE2 extension)
\g&#60;-n&#62; call subpattern by relative number (PCRE2 extension)
\g'-n' call subpattern by relative number (PCRE2 extension)
(?n) call subroutine by absolute number
(?+n) call subroutine by relative number
(?-n) call subroutine by relative number
(?&name) call subroutine by name (Perl)
(?P&#62;name) call subroutine by name (Python)
\g&#60;name&#62; call subroutine by name (Oniguruma)
\g'name' call subroutine by name (Oniguruma)
\g&#60;n&#62; call subroutine by absolute number (Oniguruma)
\g'n' call subroutine by absolute number (Oniguruma)
\g&#60;+n&#62; call subroutine by relative number (PCRE2 extension)
\g'+n' call subroutine by relative number (PCRE2 extension)
\g&#60;-n&#62; call subroutine by relative number (PCRE2 extension)
\g'-n' call subroutine by relative number (PCRE2 extension)
</PRE>
</P>
<br><a name="SEC23" href="#TOC1">CONDITIONAL PATTERNS</a><br>
@@ -595,7 +598,7 @@ Each top-level branch of a lookbehind must be of a fixed length.
(?(R) overall recursion condition
(?(Rn) specific numbered group recursion condition
(?(R&name) specific named group recursion condition
(?(DEFINE) define subpattern for reference
(?(DEFINE) define groups for reference
(?(VERSION[&#62;]=n.m) test PCRE2 version
(?(assert) assertion condition
</pre>
@@ -657,9 +660,9 @@ Cambridge, England.
</P>
<br><a name="SEC28" href="#TOC1">REVISION</a><br>
<P>
Last updated: 10 October 2018
Last updated: 03 February 2019
<br>
Copyright &copy; 1997-2018 University of Cambridge.
Copyright &copy; 1997-2019 University of Cambridge.
<br>
<p>
Return to the <a href="index.html">PCRE2 index page</a>.