On Thu, Oct 25, 2018 at 8:57 PM Werner LEMBERG <wl@gnu.org> wrote:

>
> > We have a new pdf parser (pplib from Paweł Jackowski) that replaces
> > poppler.  It is much smaller, a bit faster and it's written in
> > pure C [...]
>
> Is there a project page for pplib?  The source code of this library
> contained in TeXLive is very, very uncommented – in particular, a
> description of the API is completely missing, AFAICS.  It also comes
> with overly long lines and extremely densely written C code; it almost
> feels as if the original source has been written with cweb or
> something like that.
>
there is a documentation under html
 luatex/tags/1.09.0/source/texk/web2c/luatexdir/luapplib/html

see
http://www.luatex.org/download.html
for the svn repo
-- 
luigi