https://svn.boost.org/trac10/ticket/12511 <p> I just noticed that in the list of special chars to be escaped, we have [ but not ]: </p> <blockquote class="citation"> <p> In Perl regular expressions, all characters match themselves except for the following special characters: </p> </blockquote> <pre class="wiki">.[{}()\*+?|^$ </pre><p> Does this make sense? </p> <p> <a href="http://www.boost.org/doc/libs/1_62_0/libs/regex/doc/html/boost_regex/syntax/perl_syntax.html">http://www.boost.org/doc/libs/1_62_0/libs/regex/doc/html/boost_regex/syntax/perl_syntax.html</a> </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/12511 Trac 1.4.3 John Maddock Thu, 09 Feb 2017 18:30:27 GMT https://svn.boost.org/trac10/ticket/12511#comment:1 https://svn.boost.org/trac10/ticket/12511#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">worksforme</span> </li> </ul> <p> ] is not special, except after a [. </p> <p> I'll add a note to the docs to that effect. </p> Ticket