Which flag is equal boost regex match_not_dot_newline in std regex?

[Miao Jiang]

Hello,
I want . does not match newline in regex, in boost::regex it can be done by flag 
'match_not_dot_newline', but in std::regex, the flag is missed, what's the std 
way to do that?

My gcc version is 4.5.2

Thanks
Miao