Flex update

[Warner Losh]

Is there some reason that flex has never been updated from 2.4.5a?

Warner

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[Thomas Dickey]

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 <dic...@invisible-island.net>
http://invisible-island.net
ftp://invisible-island.net

[Baptiste Daroussin]

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.

regards,
Bapt

[Warner Losh]

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_______________________________________________

[Thomas Dickey]

yes - we seem to have agreed that if/when one of us finds time,
that would be good to add. (at the moment, I was thinking of
doing it, but have lynx and xterm fixes that have become more
urgent...)

currently I'm finishing a complicated packaging change for vile.

> > 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.

patches are welcome :-)

> > 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

[Baptiste Daroussin]

On Tue, Jul 31, 2012 at 03:27:35PM -0600, Warner Losh wrote:
>

If you want to do the import feel free :)

regards,
Bapt