[latex3-commits] [git/LaTeX3-latex3-latex2e] develop: add a paragraph about lualatex-dev and luahbtex [ci skip] (6008e893)

[Ulrike Fischer]

Repository : https://github.com/latex3/latex2e
On branch  : develop
Link       : https://github.com/latex3/latex2e/commit/6008e8933e20afc79020c3fb0a93dd2f256585df

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commit 6008e8933e20afc79020c3fb0a93dd2f256585df
Author: Ulrike Fischer <fischer at troubleshooting-tex.de>
Date:   Thu Nov 14 19:09:04 2019 +0100

    add a paragraph about lualatex-dev and luahbtex [ci skip]


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6008e8933e20afc79020c3fb0a93dd2f256585df
 base/doc/ltnews31.tex | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/base/doc/ltnews31.tex b/base/doc/ltnews31.tex
index fcda09d1..a3fa884a 100644
--- a/base/doc/ltnews31.tex
+++ b/base/doc/ltnews31.tex
@@ -191,6 +191,9 @@ this capability.
 
 \emph{write}
 
+In TeXLive 2020 the Lua\LaTeX{} format will use the new luahbtex engine which is luatex with an embedded HarfBuzz library.
+HarfBuzz can be used by setting a suitable renderer in the font declaration, an interface is provided by \pkg{fontspec}. These additional font renderer will greatly improve the shaping of various scripts which are currently handled correctly only by \XeTeX{}. To simplify the testing of the new engine binaries have been added to MiKTeX and TeXLive 2019 and both have changed the Lua\LaTeX-dev format to use it.
+
 \section{Improved load-times for \pkg{expl3}}
 
 The \LaTeX3 programming layer, \pkg{expl3}, has over the past decade moved from