[boost] [xpressive] Does '_' match newlines?

Subject: [boost] [xpressive] Does '_' match newlines?
From: Robert Dailey (rcdailey_at_[hidden])
Date: 2012-03-19 18:21:54

I have the following static regex:

    sregex filename_re =
        icase("Content-Disposition:") >> -*_ >> "filename=" >> (s2=-+_) >>
';'
        ;

I want the "*_" part to also match newline characters. I didn't see any
flag to turn this on or off. Is this on by default?

I see
boost::xpressive::regex_constants::syntax_option_type::not_dot_newline, but
not sure where you would (or wouldn't) specify this. I only recall the
ability to specify flags for a regex when you compile a dynamic regex, not
a static one.

Help is appreciated!

---------
Robert Dailey