location tracking for the empty rule without prior symbol

Hello GNU Bison people, I am using location tracking. While it works great in general, there is a corner case where I am unsure about the intended behaviour of bison and how the program should handle it. The issue is related to the value of @$ for the first reduction when the rule involved has no

Re: Distinguish between bison with C++ , bison++ and bisonc++

On 26 Jun 2009, at 16:09, Nuwan wrote: Can someone explain the difference between these three C++ generating bisons. GNU Bison with C++ bison++ bisonc++ What are those three products ? Which one is the most suitable for generate C++ ? What is the most up to date and live project ? On this

Distinguish between bison with C++ , bison++ and bisonc++

Can someone explain the difference between these three C++ generating bisons. GNU Bison with C++ bison++ bisonc++ What are those three products ? Which one is the most suitable for generate C++ ? What is the most up to date and live project ? -- A.M Nuwan Abeysinghe

Re: Extended BNF?

On 26 Jun 2009, at 00:20, Paul Hilfinger wrote: Has anyone considered adding extended BNF to Bison? We discussed it back in 2006, on this list I think, and I posted the formulas here: http://lists.gnu.org/archive/html/bug-bison/2006-03/msg00013.html But I don't think it is on the immedia