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Fix issue with (?!) not being a valid expression. Update tests and docs to match.

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[SVN r77602]
This commit is contained in:
John Maddock
2012-03-28 12:00:34 +00:00
parent 9ab4fb9eff
commit b45d6bb70c
88 changed files with 148 additions and 98 deletions
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26
doc/html/boost_regex/syntax/perl_syntax.html
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@ -22,7 +22,7 @@
<div class="spirit-nav">
<a accesskey="p" href="../syntax.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../syntax.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="basic_extended.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="section">
<div class="section boost_regex_syntax_perl_syntax">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_regex.syntax.perl_syntax"></a><a class="link" href="perl_syntax.html" title="Perl Regular Expression Syntax">Perl Regular Expression
Syntax</a>
@ -1292,7 +1292,8 @@
</p>
<p>
<code class="literal">(?(condition)yes-pattern)</code> attempts to match <span class="emphasis"><em>yes-pattern</em></span>
if the <span class="emphasis"><em>condition</em></span> is true, otherwise fails.
if the <span class="emphasis"><em>condition</em></span> is true, otherwise matches the NULL
string.
</p>
<p>
<span class="emphasis"><em>condition</em></span> may be either: a forward lookahead assert,
@ -1313,6 +1314,21 @@
if the forward look-ahead assert does not match, otherwise executes
<span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
=(?(<span class="emphasis"><em>N</em></span>)yes-pattern|no-pattern)= Executes <span class="emphasis"><em>yes-pattern</em></span>
if subexpression <span class="emphasis"><em>N</em></span> has been matched, otherwise executes
<span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
=(?(&lt;<span class="emphasis"><em>name</em></span>&gt;)yes-pattern|no-pattern)= Executes
<span class="emphasis"><em>yes-pattern</em></span> if named subexpression <span class="emphasis"><em>name</em></span>
has been matched, otherwise executes <span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
=(?('<span class="emphasis"><em>name</em></span>')yes-pattern|no-pattern)= Executes <span class="emphasis"><em>yes-pattern</em></span>
if named subexpression <span class="emphasis"><em>name</em></span> has been matched, otherwise
executes <span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
<code class="literal">(?(R)yes-pattern|no-pattern)</code> Executes <span class="emphasis"><em>yes-pattern</em></span>
if we are executing inside a recursion, otherwise executes <span class="emphasis"><em>no-pattern</em></span>.
@ -1323,6 +1339,12 @@
a recursion to sub-expression <span class="emphasis"><em>N</em></span>, otherwise executes
<span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
<code class="literal">(?(R&amp;<span class="emphasis"><em>name</em></span>)yes-pattern|no-pattern)</code>
Executes <span class="emphasis"><em>yes-pattern</em></span> if we are executing inside
a recursion to named sub-expression <span class="emphasis"><em>name</em></span>, otherwise
executes <span class="emphasis"><em>no-pattern</em></span>.
</li>
<li class="listitem">
<code class="literal">(?(DEFINE)never-exectuted-pattern)</code> Defines a block
of code that is never executed and matches no characters: this is usually