Re: bug in regex 3.31 (boost 1.28)?

From: emarkp (mping_at_[hidden])
Date: 2002-08-18 18:04:00

--- In Boost-Users_at_y..., "John Maddock" <john_maddock_at_c...> wrote:
> > Drat.  I thought that might be it after reading the docs, but I
> > figured that the expression "? would also match leftmost longest
> > (that is, a single " is better than the null string).  Also, I
> > thought that by putting a non-capturing group (?:"?) around the
> > expression, this would leftmost-longest match the ".  And yet it
> > didn't.
> 
> Leftmost longest applies only to marked sub-expressions - there is
> no concept of greedy or non-greedy repeats as such in the POSIX
> standard.  (?:\"?) isn't a marked subexpression BTW :-)

Hrm.  Makes sense.  However, I just thought of something.  There were
two expressions like that, and while the first one had trouble, the
second one didn't.  That is, I didn't have to group the " on the
second expression.