On Sun, Jun 30, 2019 at 11:09 PM Khaled Hosny <dr.khaled.hosny@gmail.com> wrote:
On Sun, Jun 30, 2019 at 12:34 AM Ulrike Fischer <news3@nililand.de> wrote:
> With harftex or an older luatex I get:
> 1 beginbfchar
> <0052> <0031>
> endbfchar

By older luatex I assume luatex with non-harf mode?

> What's going on here?

The Lua code for harf mode uses a new callback in HarfTeX to set the
glyphs tounicode values

of course if it's in harftexdir only , then it's not in  luatex.
I update  only luaharfbuzz.