Re: [Boost-users] [regex] Support for right-to-left parsing?

Geraint Bundy wrote:

Hello,

Does Boost::Regex support "backwards" or right-to-left parsing (like .NET's regex)?

If not, then is it possible to emulate this behaviour using normal parsing?

No, I'm not really familiar with how .NET does this, every time I thought about adding right to left regexes, there were so many ambiguities over their behaviour that I gave up - the problem is that the Perl regex syntax is very closely tied to left-to-right parsing IMO. You can use look-behind assertions of course, but that's probably not what you want? John.