Flex update

[Baptiste Daroussin]

On Tue, Jul 31, 2012 at 03:27:35PM -0600, Warner Losh wrote:
> 
> On Jul 31, 2012, at 2:59 PM, Baptiste Daroussin wrote:
> 
> > On Fri, Jul 20, 2012 at 04:23:00AM -0400, Thomas Dickey wrote:
> >> On Thu, Jul 19, 2012 at 10:42:15PM -0600, Warner Losh wrote:
> >>> Is there some reason that flex has never been updated from 2.4.5a?
> >> 
> >> It depends on what you mean by "updated".
> >> 
> >> The usual answer is the sourceforge project.
> >> It's not exactly an "update", since it breaks existing applications,
> >> and its maintainer is unwilling to address those problems.
> >> 
> >> Debian for instance has old/new versions.
> >> 
> >> I don't use either - see
> >> 
> >> 	http://invisible-island.net/reflex/
> >> 
> >> (earlier this year, Baptiste Daroussin suggested some additional changes
> >> to this version, along the lines of the ones I incorporated into byacc).
> >> 
> >> -- 
> >> Thomas E. Dickey <dickey at invisible-island.net>
> >> http://invisible-island.net
> >> ftp://invisible-island.net
> > 
> > reflex seems like a better solution for us than upgrade to flex (from
> > sourceforge) imho, flex depends on m4 and on some gnu m4 extensions, normally
> > our version of m4 is now compatible with gnu m4 (I added some missing bits
> > recently) but still I don't think having flex using m4 is a good idea, and
> > reflex looks cleaner in that area.
> > 
> > reflex is just missing imho one feature from flex (sourceforge version) that is
> > ability to generate reentrant code.
> > 
> > I already imported byacc from invisible island, I was supposed to add some
> > "fixes" to byacc (bde has spotted) and provide them to Thomas, sorry I have
> > been slacking in that area recently.
> > 
> > Once that is done, I have on my todo list importing reflex to replace our flex.
> > I did feel any hurry in that area, as I don't think we are missing too much
> > features, is there one you are particulary interested on? I was waiting for
> > reflex to support reentrant code generation before importing it.
> 
> Cool.  The only new feature I need from flex is the yypush/yypop_buffer_state.  That was the reason I started down this path, but punted when I discovered the delta was less than a dozen lines of code.  reflex I haven't had to evaluate to see if it brings that in or not.
> 
> Warner_______________________________________________
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If you want to do the import feel free :)

regards,
Bapt
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