On Tue, Jun 18, 2019 at 9:23 PM Patrick Gundlach wrote:

Hi Luigi,

this sounds really great!

Is there some documentation available how to access harfbuzz from Lua (jit) / FFI?

Patrick

Well, look at luatexdir/luaharfbuzz I have also used https://github.com/khaledhosny/harf to check %% test2-latex.tex \documentclass{article} \usepackage{fontspec} \newfontfamily\deva[Script=Devanagari]{NotoSansDevanagari-Regular.ttf} \newfontfamily\beng[Script=Bengali]{NotoSansBengali-Regular.ttf} \newfontfamily\guru[Script=Gurmukhi]{NotoSansGurmukhi-Regular.ttf} \newfontfamily\gujr[Script=Gujarati]{NotoSansGujarati-Regular.ttf} \newfontfamily\orya[Script=Oriya]{NotoSansOriya-Regular.ttf} \newfontfamily\taml[Script=Tamil]{NotoSansTamil-Regular.ttf} \newfontfamily\telu[Script=Telugu]{NotoSansTelugu-Regular.ttf} \newfontfamily\knda[Script=Kannada]{NotoSansKannada-Regular.ttf} \newfontfamily\mlym[Script=Malayalam]{NotoSansMalayalam-Regular.ttf} \newfontfamily\sinh[Script=Sinhala]{NotoSansSinhala-Regular.ttf} \begin{document} {\deva क्रर्कि} % krarki {\beng ক্রর্কি} % krarki {\guru ਕ੍ਰਰ੍ਕਿ} % krarki {\gujr ક્રર્કિ} % krarki {\orya କ୍ରର୍କି} % krarki {\taml கோ} % ko {\telu క్రర్కి} % krarki {\knda ಕ್ರರ್ಕಿ} % krarki {\mlym ക്രര്കി} % krarki {\sinh කෙ} % ke \end{document} from https://tex.stackexchange.com/questions/454031/examples-for-broken-rendering... I have renamed luatex 1.11.0 luatex-hb, build the lualatex format luatex-hb --ini '\input lualatex\dump and run luatex-hb -fmt=lualatex.fmt test2-latex.tex (assuming texlive 2019, all files & format in the same folder and of course that you are able to compile from svn) Seems to work. Well, it did it last time, not time to check it now, busy in other stuffs.... A few words on this task. I have done it very hurriedly (from commits luatex/branches/luatex-hb one can see 30 May 2019 15 Jun 2019 ) Even if 7 years ago I have done a lua binding to hb by swig and already I known the work done by https://github.com/tatzetwerk/luatex-harfbuzz harftex, put simply, was more easy to manage in 2 days. The idea was to check if was possible to keep the binary small and use the hb module on demand. I dont know if it will possible to meet the constrains, but with ffi there is always an alternative (well there is if luaffi works on every platforms, which is currently one of my big todo.. ) Harftex is a different project from luatex: even if currently they share several files, harftex is free to modify the core of luatex to adapt it to harftex, possibly reaching the size of xetex (~24M). So, different projects, at the moment they share some code & some (not all) patches: luatex with hb is not a replacement of harftex (at least because at this moment I dont know if hb will stay in luatex). -- luigi

On Wed, Jun 19, 2019 at 1:39 AM Norbert Preining wrote:

Hi Luigi,

On Tue, 18 Jun 2019, luigi scarso wrote:

...

It follows from the development of harftex by K. Hosny.

What is the relation to harftex?

The original proposal was done on Sat, Feb 9, 9:02 PM and 1) luatex was practically frozen ; 2) the size of the exe jumped from 8M to 24M 3) introduced the C++ dependency 4) was not clear the interactions with the core of luatex Having a couple of days , I have tried the integration and 1) with harfbuzz the size of luatex is still around 8M 2) the C++ dependency is accepted 3) there is no modification to the core luatex It seems to work (but see prev. emails).

We have harftex now in tlcontrib,

I don't know of /manage anything in tlcontrib, but having harftex in texlive is not a problem for me (again see prev emails). -- luigi

On Mon, Jul 8, 2019 at 9:05 AM luigi scarso wrote:

even considering the API stability of harfbuzz itself

HarfBuzz has stable ABI/API and has been so even before version 1.0.0. Regards, Khaled