Hi gurus and nubys,
I just spotted this in the changelog:
* parse.y: make ruby parser reentrant. merge ripper parser to the
real one. this change makes ruby require bison.
first, thank you for merging ripper.
Alternative interpreter/editor/tool writers out there should realy
appreciate this, I think 
But there are two things that I don't understand:
First, what are the implications of having a reentrant parser ?
I mean, this was the only thing that was non reentrant, so this cange
applies to ruby as a whole or was this just a change to make ripper
happy?
Second, what does it meen that now ruby requires bison? I used to
think that bison could generate standalone parsers, do we now need
bison to build ruby, to use ruby, or does it meen that we're simply
forgetting other yacc-like parser generators and focus on just using
bison ?
thank you in advance.