https://svn.boost.org/trac10/ticket/8890 <p> The escape sequence "\K" does not work in regex (boost v1.54). Is there any other option instead of it? (lookbehind has a limitation of fixed length pattern) </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/8890 Trac 1.4.3 John Maddock Fri, 13 Dec 2013 17:02:24 GMT https://svn.boost.org/trac10/ticket/8890#comment:1 https://svn.boost.org/trac10/ticket/8890#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> Supported in Boost-1.55. </p> Ticket