Re: [Boost-users] [regex] Why pattern anchored at buffer end ($)alsomatch for (\x0c)FF, (\x0d)CR

Chandan Nilange wrote:

Hello John,

I not very clear.

So do you mean that -

$ & ^ matching pattern after/before any (\x0c)FF, (\x0d)CR is right PCRE /m modifier behaviour.

I believe so, but deciding what the right behaviour should be is not necessarily easy: Perl has the luxury that it controls File IO as well as regexes: in contrast Boost.Regex is designed to accept text from all kinds of sources and platforms. Most applications will in any case regard an isolated \r or \n as a line break, as well as \r\n. Likewise in what sense does a form-feed *not* start a new line? :-) HTH, John.