difficulty using glyphs in the Corporate Use or Microsoft Symbol Areas

[mewtant]

With version 2.9 of luaotfload, it has become more difficult to use glyphs in the Corporate Use and similar areas. For example, the \fontchar macro no longer gives the desired result. See https://tex.stackexchange.com/q/453224 for more details.

[u-fischer]

I asked on the context list: https://www.mail-archive.com/ntg-context@ntg.nl/msg89146.html

[u-fischer]

Same problem reported by Claudio Beccari:

\documentclass{book}

\usepackage{libertine}

\begin{document}

First hit this key sequence:\LKeyShiftX{H}

Then hit these keys one by one:
\LKey{E}\LKey{L}\LKey{L}\LKey{O}\LKeySpace\LKey{W}\LKey{O}\LKey{R}\LKey{L}\LKey{D}

And finally hit the \LKeyEnter\ key.

You should now see the phrase ``Hello world'' on your screen.

\end{document}

Current Output:

Expected Output

[u-fischer]

The generic fontloader moved "all private chars in the font to a dedicated private range" and so broke the access of this glyphs. If this change is permanent all packages and documents which access such glyphs will have to adapt their code.

Currently available work-arounds

use older fontloader

• Get the 2018-07-20 (or 2018-07-20-patched) fontloader from https://github.com/u-fischer/fontloader-archive/tree/master/archive

• create a luaotfload.conf in the search path with

[run]
fontloader= fontloader-reference-2018-07-20.lua;

with a lua function

\documentclass{book}

\usepackage{fontspec}
\setmainfont{Coelacanth}
\newcommand\byunicode[1]{\directlua{
      for k, v in pairs(fonts.hashes.identifiers[font.current()].characters) do
          if v.unicode == #1 then
              tex.print(utf.char(k))
              break
          end
      end
 }}


\begin{document}

\byunicode{62860} \byunicode{\number"F58C}

\end{document}

[u-fischer]

I uploaded a new version to ctan, it should be available tomorrow. If you want to try directly: Both the texmf-tree and the zip in the dev-branch contain the new files.

[ArTourter]

That fixes it for fontawesome. Thanks!

[mewtant]

Thanks for fixing this so quickly! The updated luaotfload works perfectly.