id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5223,boost::regex only accepts turning off one Perl modifier,lpancescu@…,John Maddock,"I'm trying to use modifiers with the extended Perl syntax. Turning on multiple modifiers seems to work fine, but turning them off only seems to accept a single modifier after the '-':

#include <iostream>
#include <boost/regex.hpp>

int main()
{
    using std::cerr;
    using boost::regex;
    using boost::regex_error;
    
    try 
    {
	regex m1(""(?xism:\\d)"", regex::perl); // ok
	regex m2(""(?-x:\\d)"", regex::perl);   // ok
	regex m3(""(?-xism\\d)"", regex::perl); // bad regexp
    }
    catch (boost::regex_error err)
    {
	cerr << ""Bad regular expression: "" << err.what() << ""\n"";
    }
}

I'm using Boost 1.45 from MacPorts on Mac OS X 10.6.6, trying to ""port"" some Perl code to C++.",Bugs,closed,To Be Determined,regex,Boost 1.45.0,Problem,fixed,,