Added Perl-5.10 "branch reset" support.

[SVN r52961]

doc/html/boost_regex/syntax/basic_extended.html

@@ -28,7 +28,7 @@
       Expression Syntax</a>
 </h3></div></div></div>
 <a name="boost_regex.syntax.basic_extended.synopsis"></a><h4>
-<a name="id768718"></a>
+<a name="id656257"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.synopsis">Synopsis</a>
       </h4>
 <p>
@@ -46,7 +46,7 @@
 <a name="boost_regex.posix_extended_syntax"></a><p>
       </p>
 <a name="boost_regex.syntax.basic_extended.posix_extended_syntax"></a><h4>
-<a name="id768897"></a>
+<a name="id656436"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.posix_extended_syntax">POSIX
         Extended Syntax</a>
       </h4>
@@ -56,7 +56,7 @@
       </p>
 <pre class="programlisting">.[{()\*+?|^$</pre>
 <a name="boost_regex.syntax.basic_extended.wildcard_"></a><h5>
-<a name="id768919"></a>
+<a name="id656457"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.wildcard_">Wildcard:</a>
       </h5>
 <p>
@@ -74,7 +74,7 @@
         </li>
 </ul></div>
 <a name="boost_regex.syntax.basic_extended.anchors_"></a><h5>
-<a name="id768963"></a>
+<a name="id656502"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.anchors_">Anchors:</a>
       </h5>
 <p>
@@ -86,7 +86,7 @@
         of an expression, or the last character of a sub-expression.
       </p>
 <a name="boost_regex.syntax.basic_extended.marked_sub_expressions_"></a><h5>
-<a name="id768986"></a>
+<a name="id656524"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.marked_sub_expressions_">Marked
         sub-expressions:</a>
       </h5>
@@ -98,7 +98,7 @@
         to by a back-reference.
       </p>
 <a name="boost_regex.syntax.basic_extended.repeats_"></a><h5>
-<a name="id769019"></a>
+<a name="id656558"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.repeats_">Repeats:</a>
       </h5>
 <p>
@@ -184,7 +184,7 @@ cab
         operator to be applied to.
       </p>
 <a name="boost_regex.syntax.basic_extended.back_references_"></a><h5>
-<a name="id769325"></a>
+<a name="id656864"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.back_references_">Back references:</a>
       </h5>
 <p>
@@ -214,7 +214,7 @@ cab
         </p></td></tr>
 </table></div>
 <a name="boost_regex.syntax.basic_extended.alternation"></a><h5>
-<a name="id769389"></a>
+<a name="id656928"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.alternation">Alternation</a>
       </h5>
 <p>
@@ -227,7 +227,7 @@ cab
         will match either of "abd" or "abef".
       </p>
 <a name="boost_regex.syntax.basic_extended.character_sets_"></a><h5>
-<a name="id769456"></a>
+<a name="id656995"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.character_sets_">Character
         sets:</a>
       </h5>
@@ -240,7 +240,7 @@ cab
         A bracket expression may contain any combination of the following:
       </p>
 <a name="boost_regex.syntax.basic_extended.single_characters_"></a><h6>
-<a name="id769477"></a>
+<a name="id657015"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.single_characters_">Single
         characters:</a>
       </h6>
@@ -249,7 +249,7 @@ cab
         or 'c'.
       </p>
 <a name="boost_regex.syntax.basic_extended.character_ranges_"></a><h6>
-<a name="id769508"></a>
+<a name="id657046"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.character_ranges_">Character
         ranges:</a>
       </h6>
@@ -265,7 +265,7 @@ cab
         the code points of the characters only.
       </p>
 <a name="boost_regex.syntax.basic_extended.negation_"></a><h6>
-<a name="id769569"></a>
+<a name="id657108"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.negation_">Negation:</a>
       </h6>
 <p>
@@ -274,7 +274,7 @@ cab
         range <code class="computeroutput"><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span></code>.
       </p>
 <a name="boost_regex.syntax.basic_extended.character_classes_"></a><h6>
-<a name="id769623"></a>
+<a name="id657162"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.character_classes_">Character
         classes:</a>
       </h6>
@@ -284,7 +284,7 @@ cab
         <a class="link" href="character_classes.html" title="Character Class Names">character class names</a>.
       </p>
 <a name="boost_regex.syntax.basic_extended.collating_elements_"></a><h6>
-<a name="id769675"></a>
+<a name="id657213"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.collating_elements_">Collating
         Elements:</a>
       </h6>
@@ -312,7 +312,7 @@ cab
         matches a NUL character.
       </p>
 <a name="boost_regex.syntax.basic_extended.equivalence_classes_"></a><h6>
-<a name="id769777"></a>
+<a name="id657315"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.equivalence_classes_">Equivalence
         classes:</a>
       </h6>
@@ -329,7 +329,7 @@ cab
         or even all locales on one platform.
       </p>
 <a name="boost_regex.syntax.basic_extended.combinations_"></a><h6>
-<a name="id769834"></a>
+<a name="id657373"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.combinations_">Combinations:</a>
       </h6>
 <p>
@@ -337,7 +337,7 @@ cab
         <code class="computeroutput"><span class="special">[[:</span><span class="identifier">digit</span><span class="special">:]</span><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span><span class="special">[.</span><span class="identifier">NUL</span><span class="special">.]]</span></code>.
       </p>
 <a name="boost_regex.syntax.basic_extended.escapes"></a><h5>
-<a name="id769887"></a>
+<a name="id657426"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.escapes">Escapes</a>
       </h5>
 <p>
@@ -363,7 +363,7 @@ cab
         extensions are also supported by Boost.Regex:
       </p>
 <a name="boost_regex.syntax.basic_extended.escapes_matching_a_specific_character"></a><h6>
-<a name="id769930"></a>
+<a name="id657469"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.escapes_matching_a_specific_character">Escapes
         matching a specific character</a>
       </h6>
@@ -552,7 +552,7 @@ cab
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.basic_extended._quot_single_character_quot__character_classes_"></a><h6>
-<a name="id770221"></a>
+<a name="id657759"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended._quot_single_character_quot__character_classes_">"Single
         character" character classes:</a>
       </h6>
@@ -706,7 +706,7 @@ cab
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.basic_extended.character_properties"></a><h6>
-<a name="id770709"></a>
+<a name="id658328"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.character_properties">Character
         Properties</a>
       </h6>
@@ -813,7 +813,7 @@ cab
         matches any "digit" character, as does <code class="computeroutput"><span class="special">\</span><span class="identifier">p</span><span class="special">{</span><span class="identifier">digit</span><span class="special">}</span></code>.
       </p>
 <a name="boost_regex.syntax.basic_extended.word_boundaries"></a><h6>
-<a name="id771097"></a>
+<a name="id658635"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.word_boundaries">Word Boundaries</a>
       </h6>
 <p>
@@ -888,7 +888,7 @@ cab
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.basic_extended.buffer_boundaries"></a><h6>
-<a name="id771253"></a>
+<a name="id658791"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.buffer_boundaries">Buffer
         boundaries</a>
       </h6>
@@ -979,7 +979,7 @@ cab
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.basic_extended.continuation_escape"></a><h6>
-<a name="id771437"></a>
+<a name="id658976"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.continuation_escape">Continuation
         Escape</a>
       </h6>
@@ -991,7 +991,7 @@ cab
         match to start where the last one ended.
       </p>
 <a name="boost_regex.syntax.basic_extended.quoting_escape"></a><h6>
-<a name="id771465"></a>
+<a name="id659004"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.quoting_escape">Quoting
         escape</a>
       </h6>
@@ -1005,7 +1005,7 @@ cab
 <span class="special">\*+</span><span class="identifier">aaa</span>
 </pre>
 <a name="boost_regex.syntax.basic_extended.unicode_escapes"></a><h6>
-<a name="id771545"></a>
+<a name="id659084"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.unicode_escapes">Unicode
         escapes</a>
       </h6>
@@ -1056,7 +1056,7 @@ cab
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.basic_extended.any_other_escape"></a><h6>
-<a name="id771647"></a>
+<a name="id659186"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.any_other_escape">Any other
         escape</a>
       </h6>
@@ -1065,7 +1065,7 @@ cab
         \@ matches a literal '@'.
       </p>
 <a name="boost_regex.syntax.basic_extended.operator_precedence"></a><h5>
-<a name="id771664"></a>
+<a name="id659203"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.operator_precedence">Operator
         precedence</a>
       </h5>
@@ -1101,7 +1101,7 @@ cab
 </li>
 </ol></div>
 <a name="boost_regex.syntax.basic_extended.what_gets_matched"></a><h5>
-<a name="id771797"></a>
+<a name="id659336"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.what_gets_matched">What
         Gets Matched</a>
       </h5>
@@ -1111,11 +1111,11 @@ cab
         rule</a>.
       </p>
 <a name="boost_regex.syntax.basic_extended.variations"></a><h4>
-<a name="id771819"></a>
+<a name="id659358"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.variations">Variations</a>
       </h4>
 <a name="boost_regex.syntax.basic_extended.egrep"></a><h5>
-<a name="id771832"></a>
+<a name="id659371"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.egrep">Egrep</a>
       </h5>
 <p>
@@ -1136,7 +1136,7 @@ cab
         used with the -E option.
       </p>
 <a name="boost_regex.syntax.basic_extended.awk"></a><h5>
-<a name="id771934"></a>
+<a name="id659473"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.awk">awk</a>
       </h5>
 <p>
@@ -1150,7 +1150,7 @@ cab
         these by default anyway.
       </p>
 <a name="boost_regex.syntax.basic_extended.options"></a><h4>
-<a name="id771959"></a>
+<a name="id659498"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.options">Options</a>
       </h4>
 <p>
@@ -1163,7 +1163,7 @@ cab
         modify how the case and locale sensitivity are to be applied.
       </p>
 <a name="boost_regex.syntax.basic_extended.references"></a><h4>
-<a name="id772037"></a>
+<a name="id659576"></a>
         <a class="link" href="basic_extended.html#boost_regex.syntax.basic_extended.references">References</a>
       </h4>
 <p>

doc/html/boost_regex/syntax/basic_syntax.html

@@ -28,7 +28,7 @@
       Expression Syntax</a>
 </h3></div></div></div>
 <a name="boost_regex.syntax.basic_syntax.synopsis"></a><h4>
-<a name="id772087"></a>
+<a name="id659625"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.synopsis">Synopsis</a>
       </h4>
 <p>
@@ -45,7 +45,7 @@
 <a name="boost_regex.posix_basic"></a><p>
       </p>
 <a name="boost_regex.syntax.basic_syntax.posix_basic_syntax"></a><h4>
-<a name="id772282"></a>
+<a name="id659821"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.posix_basic_syntax">POSIX
         Basic Syntax</a>
       </h4>
@@ -55,7 +55,7 @@
       </p>
 <pre class="programlisting">.[\*^$</pre>
 <a name="boost_regex.syntax.basic_syntax.wildcard_"></a><h5>
-<a name="id772304"></a>
+<a name="id659842"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.wildcard_">Wildcard:</a>
       </h5>
 <p>
@@ -73,7 +73,7 @@
         </li>
 </ul></div>
 <a name="boost_regex.syntax.basic_syntax.anchors_"></a><h5>
-<a name="id772348"></a>
+<a name="id659887"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.anchors_">Anchors:</a>
       </h5>
 <p>
@@ -85,7 +85,7 @@
         of an expression, or the last character of a sub-expression.
       </p>
 <a name="boost_regex.syntax.basic_syntax.marked_sub_expressions_"></a><h5>
-<a name="id772369"></a>
+<a name="id659907"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.marked_sub_expressions_">Marked
         sub-expressions:</a>
       </h5>
@@ -97,7 +97,7 @@
         by a back-reference.
       </p>
 <a name="boost_regex.syntax.basic_syntax.repeats_"></a><h5>
-<a name="id772400"></a>
+<a name="id659938"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.repeats_">Repeats:</a>
       </h5>
 <p>
@@ -155,7 +155,7 @@ aaaa
         to.
       </p>
 <a name="boost_regex.syntax.basic_syntax.back_references_"></a><h5>
-<a name="id772564"></a>
+<a name="id660103"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.back_references_">Back references:</a>
       </h5>
 <p>
@@ -173,7 +173,7 @@ aaaa
       </p>
 <pre class="programlisting">aaabba</pre>
 <a name="boost_regex.syntax.basic_syntax.character_sets_"></a><h5>
-<a name="id772613"></a>
+<a name="id660152"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_sets_">Character
         sets:</a>
       </h5>
@@ -186,7 +186,7 @@ aaaa
         A bracket expression may contain any combination of the following:
       </p>
 <a name="boost_regex.syntax.basic_syntax.single_characters_"></a><h6>
-<a name="id772634"></a>
+<a name="id660172"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.single_characters_">Single
         characters:</a>
       </h6>
@@ -195,7 +195,7 @@ aaaa
         or 'c'.
       </p>
 <a name="boost_regex.syntax.basic_syntax.character_ranges_"></a><h6>
-<a name="id772665"></a>
+<a name="id660204"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_ranges_">Character
         ranges:</a>
       </h6>
@@ -211,7 +211,7 @@ aaaa
         of the characters only.
       </p>
 <a name="boost_regex.syntax.basic_syntax.negation_"></a><h6>
-<a name="id772721"></a>
+<a name="id660260"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.negation_">Negation:</a>
       </h6>
 <p>
@@ -220,7 +220,7 @@ aaaa
         range a-c.
       </p>
 <a name="boost_regex.syntax.basic_syntax.character_classes_"></a><h6>
-<a name="id772760"></a>
+<a name="id660298"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.character_classes_">Character
         classes:</a>
       </h6>
@@ -230,7 +230,7 @@ aaaa
         <a class="link" href="character_classes.html" title="Character Class Names">character class names</a>.
       </p>
 <a name="boost_regex.syntax.basic_syntax.collating_elements_"></a><h6>
-<a name="id772811"></a>
+<a name="id660350"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.collating_elements_">Collating
         Elements:</a>
       </h6>
@@ -259,7 +259,7 @@ aaaa
         element names</a>.
       </p>
 <a name="boost_regex.syntax.basic_syntax.equivalence_classes_"></a><h6>
-<a name="id772903"></a>
+<a name="id660441"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.equivalence_classes_">Equivalence
         classes:</a>
       </h6>
@@ -276,7 +276,7 @@ aaaa
         or even all locales on one platform.
       </p>
 <a name="boost_regex.syntax.basic_syntax.combinations_"></a><h6>
-<a name="id772960"></a>
+<a name="id660499"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.combinations_">Combinations:</a>
       </h6>
 <p>
@@ -284,7 +284,7 @@ aaaa
         <code class="computeroutput"><span class="special">[[:</span><span class="identifier">digit</span><span class="special">:]</span><span class="identifier">a</span><span class="special">-</span><span class="identifier">c</span><span class="special">[.</span><span class="identifier">NUL</span><span class="special">.]].</span></code>
       </p>
 <a name="boost_regex.syntax.basic_syntax.escapes"></a><h5>
-<a name="id774885"></a>
+<a name="id662424"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.escapes">Escapes</a>
       </h5>
 <p>
@@ -299,7 +299,7 @@ aaaa
         will match either a literal '\' or a '^'.
       </p>
 <a name="boost_regex.syntax.basic_syntax.what_gets_matched"></a><h4>
-<a name="id774919"></a>
+<a name="id662458"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.what_gets_matched">What Gets
         Matched</a>
       </h4>
@@ -309,13 +309,13 @@ aaaa
         rule</a>.
       </p>
 <a name="boost_regex.syntax.basic_syntax.variations"></a><h4>
-<a name="id774941"></a>
+<a name="id662479"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.variations">Variations</a>
       </h4>
 <a name="boost_regex.grep_syntax"></a><p>
       </p>
 <a name="boost_regex.syntax.basic_syntax.grep"></a><h5>
-<a name="id774961"></a>
+<a name="id662500"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.grep">Grep</a>
       </h5>
 <p>
@@ -333,7 +333,7 @@ aaaa
         As its name suggests, this behavior is consistent with the Unix utility grep.
       </p>
 <a name="boost_regex.syntax.basic_syntax.emacs"></a><h5>
-<a name="id775056"></a>
+<a name="id662594"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.emacs">emacs</a>
       </h5>
 <p>
@@ -613,7 +613,7 @@ aaaa
         leftmost-longest rule</a>.
       </p>
 <a name="boost_regex.syntax.basic_syntax.options"></a><h4>
-<a name="id775473"></a>
+<a name="id663012"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.options">Options</a>
       </h4>
 <p>
@@ -627,7 +627,7 @@ aaaa
         options</a> modify how the case and locale sensitivity are to be applied.
       </p>
 <a name="boost_regex.syntax.basic_syntax.references"></a><h4>
-<a name="id775580"></a>
+<a name="id663119"></a>
         <a class="link" href="basic_syntax.html#boost_regex.syntax.basic_syntax.references">References</a>
       </h4>
 <p>

doc/html/boost_regex/syntax/perl_syntax.html

@@ -28,7 +28,7 @@
       Syntax</a>
 </h3></div></div></div>
 <a name="boost_regex.syntax.perl_syntax.synopsis"></a><h4>
-<a name="id763021"></a>
+<a name="id650518"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.synopsis">Synopsis</a>
       </h4>
 <p>
@@ -43,7 +43,7 @@
 </span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span> <span class="identifier">e2</span><span class="special">(</span><span class="identifier">my_expression</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">perl</span><span class="special">|</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex</span><span class="special">::</span><span class="identifier">icase</span><span class="special">);</span>
 </pre>
 <a name="boost_regex.syntax.perl_syntax.perl_regular_expression_syntax"></a><h4>
-<a name="id763169"></a>
+<a name="id650665"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.perl_regular_expression_syntax">Perl
         Regular Expression Syntax</a>
       </h4>
@@ -53,7 +53,7 @@
       </p>
 <pre class="programlisting">.[{()\*+?|^$</pre>
 <a name="boost_regex.syntax.perl_syntax.wildcard"></a><h5>
-<a name="id763193"></a>
+<a name="id650689"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.wildcard">Wildcard</a>
       </h5>
 <p>
@@ -73,7 +73,7 @@
         </li>
 </ul></div>
 <a name="boost_regex.syntax.perl_syntax.anchors"></a><h5>
-<a name="id763239"></a>
+<a name="id650736"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.anchors">Anchors</a>
       </h5>
 <p>
@@ -83,7 +83,7 @@
         A '$' character shall match the end of a line.
       </p>
 <a name="boost_regex.syntax.perl_syntax.marked_sub_expressions"></a><h5>
-<a name="id763261"></a>
+<a name="id650758"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.marked_sub_expressions">Marked
         sub-expressions</a>
       </h5>
@@ -94,7 +94,7 @@
         can also repeated, or referred to by a back-reference.
       </p>
 <a name="boost_regex.syntax.perl_syntax.non_marking_grouping"></a><h5>
-<a name="id763287"></a>
+<a name="id650784"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.non_marking_grouping">Non-marking
         grouping</a>
       </h5>
@@ -107,7 +107,7 @@
         without splitting out any separate sub-expressions.
       </p>
 <a name="boost_regex.syntax.perl_syntax.repeats"></a><h5>
-<a name="id763323"></a>
+<a name="id650820"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.repeats">Repeats</a>
       </h5>
 <p>
@@ -188,7 +188,7 @@
         to be applied to.
       </p>
 <a name="boost_regex.syntax.perl_syntax.non_greedy_repeats"></a><h5>
-<a name="id763560"></a>
+<a name="id651056"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.non_greedy_repeats">Non greedy
         repeats</a>
       </h5>
@@ -218,7 +218,7 @@
         while consuming as little input as possible.
       </p>
 <a name="boost_regex.syntax.perl_syntax.pocessive_repeats"></a><h5>
-<a name="id763619"></a>
+<a name="id651115"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.pocessive_repeats">Pocessive
         repeats</a>
       </h5>
@@ -250,7 +250,7 @@
         while giving nothing back.
       </p>
 <a name="boost_regex.syntax.perl_syntax.back_references"></a><h5>
-<a name="id763677"></a>
+<a name="id651174"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.back_references">Back references</a>
       </h5>
 <p>
@@ -360,7 +360,7 @@
         named "two".
       </p>
 <a name="boost_regex.syntax.perl_syntax.alternation"></a><h5>
-<a name="id763897"></a>
+<a name="id651394"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.alternation">Alternation</a>
       </h5>
 <p>
@@ -387,7 +387,7 @@
         <code class="literal">(?:abc)??</code> has exactly the same effect.
       </p>
 <a name="boost_regex.syntax.perl_syntax.character_sets"></a><h5>
-<a name="id763965"></a>
+<a name="id651462"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.character_sets">Character sets</a>
       </h5>
 <p>
@@ -399,7 +399,7 @@
         A bracket expression may contain any combination of the following:
       </p>
 <a name="boost_regex.syntax.perl_syntax.single_characters"></a><h6>
-<a name="id763997"></a>
+<a name="id651493"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.single_characters">Single characters</a>
       </h6>
 <p>
@@ -407,7 +407,7 @@
         'b', or 'c'.
       </p>
 <a name="boost_regex.syntax.perl_syntax.character_ranges"></a><h6>
-<a name="id764018"></a>
+<a name="id651515"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.character_ranges">Character
         ranges</a>
       </h6>
@@ -421,7 +421,7 @@
         sensitive.
       </p>
 <a name="boost_regex.syntax.perl_syntax.negation"></a><h6>
-<a name="id764051"></a>
+<a name="id651547"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.negation">Negation</a>
       </h6>
 <p>
@@ -430,7 +430,7 @@
         matches any character that is not in the range <code class="literal">a-c</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.character_classes"></a><h6>
-<a name="id764078"></a>
+<a name="id651575"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.character_classes">Character
         classes</a>
       </h6>
@@ -441,7 +441,7 @@
         class names</a>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.collating_elements"></a><h6>
-<a name="id764111"></a>
+<a name="id651607"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.collating_elements">Collating
         Elements</a>
       </h6>
@@ -463,7 +463,7 @@
         matches a <code class="literal">\0</code> character.
       </p>
 <a name="boost_regex.syntax.perl_syntax.equivalence_classes"></a><h6>
-<a name="id764173"></a>
+<a name="id651670"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.equivalence_classes">Equivalence
         classes</a>
       </h6>
@@ -480,7 +480,7 @@
         or even all locales on one platform.
       </p>
 <a name="boost_regex.syntax.perl_syntax.escaped_characters"></a><h6>
-<a name="id764221"></a>
+<a name="id651718"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.escaped_characters">Escaped
         Characters</a>
       </h6>
@@ -492,7 +492,7 @@
         is <span class="emphasis"><em>not</em></span> a "word" character.
       </p>
 <a name="boost_regex.syntax.perl_syntax.combinations"></a><h6>
-<a name="id764289"></a>
+<a name="id651786"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.combinations">Combinations</a>
       </h6>
 <p>
@@ -500,7 +500,7 @@
         <code class="literal">[[:digit:]a-c[.NUL.]]</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.escapes"></a><h5>
-<a name="id764311"></a>
+<a name="id651808"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.escapes">Escapes</a>
       </h5>
 <p>
@@ -692,7 +692,7 @@
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.perl_syntax._quot_single_character_quot__character_classes_"></a><h6>
-<a name="id766201"></a>
+<a name="id653698"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax._quot_single_character_quot__character_classes_">"Single
         character" character classes:</a>
       </h6>
@@ -894,7 +894,7 @@
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.perl_syntax.character_properties"></a><h6>
-<a name="id766801"></a>
+<a name="id654298"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.character_properties">Character
         Properties</a>
       </h6>
@@ -1002,7 +1002,7 @@
         as does <code class="literal">\p{digit}</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.word_boundaries"></a><h6>
-<a name="id767090"></a>
+<a name="id654587"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.word_boundaries">Word Boundaries</a>
       </h6>
 <p>
@@ -1021,7 +1021,7 @@
         <code class="literal">\B</code> Matches only when not at a word boundary.
       </p>
 <a name="boost_regex.syntax.perl_syntax.buffer_boundaries"></a><h6>
-<a name="id767142"></a>
+<a name="id654638"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.buffer_boundaries">Buffer boundaries</a>
       </h6>
 <p>
@@ -1046,7 +1046,7 @@
         to the regular expression <code class="literal">\n*\z</code>
       </p>
 <a name="boost_regex.syntax.perl_syntax.continuation_escape"></a><h6>
-<a name="id767183"></a>
+<a name="id654679"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.continuation_escape">Continuation
         Escape</a>
       </h6>
@@ -1058,7 +1058,7 @@
         one ended.
       </p>
 <a name="boost_regex.syntax.perl_syntax.quoting_escape"></a><h6>
-<a name="id767204"></a>
+<a name="id654701"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.quoting_escape">Quoting escape</a>
       </h6>
 <p>
@@ -1071,7 +1071,7 @@
 <span class="special">\*+</span><span class="identifier">aaa</span>
 </pre>
 <a name="boost_regex.syntax.perl_syntax.unicode_escapes"></a><h6>
-<a name="id767251"></a>
+<a name="id654748"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.unicode_escapes">Unicode escapes</a>
       </h6>
 <p>
@@ -1081,7 +1081,7 @@
         followed by a sequence of zero or more combining characters.
       </p>
 <a name="boost_regex.syntax.perl_syntax.matching_line_endings"></a><h6>
-<a name="id767277"></a>
+<a name="id654774"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.matching_line_endings">Matching
         Line Endings</a>
       </h6>
@@ -1090,7 +1090,7 @@
         sequence, specifically it is identical to the expression <code class="literal">(?&gt;\x0D\x0A?|[\x0A-\x0C\x85\x{2028}\x{2029}])</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.keeping_back_some_text"></a><h6>
-<a name="id767304"></a>
+<a name="id654800"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.keeping_back_some_text">Keeping
         back some text</a>
       </h6>
@@ -1105,7 +1105,7 @@
         This can be used to simulate variable width lookbehind assertions.
       </p>
 <a name="boost_regex.syntax.perl_syntax.any_other_escape"></a><h6>
-<a name="id767334"></a>
+<a name="id654830"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.any_other_escape">Any other
         escape</a>
       </h6>
@@ -1114,7 +1114,7 @@
         \@ matches a literal '@'.
       </p>
 <a name="boost_regex.syntax.perl_syntax.perl_extended_patterns"></a><h5>
-<a name="id767351"></a>
+<a name="id654847"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.perl_extended_patterns">Perl
         Extended Patterns</a>
       </h5>
@@ -1123,7 +1123,7 @@
         <code class="literal">(?</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.named_subexpressions"></a><h6>
-<a name="id767372"></a>
+<a name="id654869"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.named_subexpressions">Named
         Subexpressions</a>
       </h6>
@@ -1145,14 +1145,14 @@
         format string for search and replace operations, or in the <a class="link" href="../ref/match_results.html" title="match_results"><code class="computeroutput"><span class="identifier">match_results</span></code></a> member functions.
       </p>
 <a name="boost_regex.syntax.perl_syntax.comments"></a><h6>
-<a name="id767467"></a>
+<a name="id654964"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.comments">Comments</a>
       </h6>
 <p>
         <code class="literal">(?# ... )</code> is treated as a comment, it's contents are ignored.
       </p>
 <a name="boost_regex.syntax.perl_syntax.modifiers"></a><h6>
-<a name="id767490"></a>
+<a name="id654986"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.modifiers">Modifiers</a>
       </h6>
 <p>
@@ -1166,7 +1166,7 @@
         pattern only.
       </p>
 <a name="boost_regex.syntax.perl_syntax.non_marking_groups"></a><h6>
-<a name="id767525"></a>
+<a name="id655021"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.non_marking_groups">Non-marking
         groups</a>
       </h6>
@@ -1174,8 +1174,30 @@
         <code class="literal">(?:pattern)</code> lexically groups pattern, without generating
         an additional sub-expression.
       </p>
+<a name="boost_regex.syntax.perl_syntax.branch_reset"></a><h6>
+<a name="id655043"></a>
+        <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.branch_reset">Branch reset</a>
+      </h6>
+<p>
+        <code class="literal">(?|pattern)</code> resets the subexpression count at the start
+        of each "|" alternative within <span class="emphasis"><em>pattern</em></span>.
+      </p>
+<p>
+        The sub-expression count following this construct is that of whichever branch
+        had the largest number of sub-expressions. This construct is useful when
+        you want to capture one of a number of alternative matches in a single sub-expression
+        index.
+      </p>
+<p>
+        In the following example the index of each sub-expression is shown below
+        the expression:
+      </p>
+<pre class="programlisting"># before  ---------------branch-reset----------- after        
+/ ( a )  (?| x ( y ) z | (p (q) r) | (t) u (v) ) ( z ) /x
+# 1            2         2  3        2     3     4
+</pre>
 <a name="boost_regex.syntax.perl_syntax.lookahead"></a><h6>
-<a name="id767546"></a>
+<a name="id655080"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.lookahead">Lookahead</a>
       </h6>
 <p>
@@ -1198,7 +1220,7 @@
         could be used to validate the password.
       </p>
 <a name="boost_regex.syntax.perl_syntax.lookbehind"></a><h6>
-<a name="id767621"></a>
+<a name="id655154"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.lookbehind">Lookbehind</a>
       </h6>
 <p>
@@ -1212,7 +1234,7 @@
         (pattern must be of fixed length).
       </p>
 <a name="boost_regex.syntax.perl_syntax.independent_sub_expressions"></a><h6>
-<a name="id767653"></a>
+<a name="id655187"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.independent_sub_expressions">Independent
         sub-expressions</a>
       </h6>
@@ -1225,7 +1247,7 @@
         no match is found at all.
       </p>
 <a name="boost_regex.syntax.perl_syntax.conditional_expressions"></a><h6>
-<a name="id767684"></a>
+<a name="id655218"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.conditional_expressions">Conditional
         Expressions</a>
       </h6>
@@ -1244,7 +1266,7 @@
         sub-expression has been matched).
       </p>
 <a name="boost_regex.syntax.perl_syntax.operator_precedence"></a><h5>
-<a name="id767739"></a>
+<a name="id655273"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.operator_precedence">Operator
         precedence</a>
       </h5>
@@ -1279,7 +1301,7 @@
         </li>
 </ol></div>
 <a name="boost_regex.syntax.perl_syntax.what_gets_matched"></a><h4>
-<a name="id767829"></a>
+<a name="id655363"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.what_gets_matched">What gets
         matched</a>
       </h4>
@@ -1454,7 +1476,7 @@
 </tbody>
 </table></div>
 <a name="boost_regex.syntax.perl_syntax.variations"></a><h4>
-<a name="id768187"></a>
+<a name="id656077"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.variations">Variations</a>
       </h4>
 <p>
@@ -1463,7 +1485,7 @@
         and <code class="literal">JScript</code></a> are all synonyms for <code class="literal">perl</code>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.options"></a><h4>
-<a name="id768585"></a>
+<a name="id656124"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.options">Options</a>
       </h4>
 <p>
@@ -1475,7 +1497,7 @@
         are to be applied.
       </p>
 <a name="boost_regex.syntax.perl_syntax.pattern_modifiers"></a><h4>
-<a name="id768633"></a>
+<a name="id656172"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.pattern_modifiers">Pattern
         Modifiers</a>
       </h4>
@@ -1487,7 +1509,7 @@
         and <code class="literal">no_mod_s</code></a>.
       </p>
 <a name="boost_regex.syntax.perl_syntax.references"></a><h4>
-<a name="id768686"></a>
+<a name="id656224"></a>
         <a class="link" href="perl_syntax.html#boost_regex.syntax.perl_syntax.references">References</a>
       </h4>
 <p>