\downbracefill and \upbracefill

[hvoss49]

Description

Without loading unicode-math both macros (defined in LaTeX kernel) worked well With loading unicode-math wrong characters are used. The parts of the braces are also defined in LaTeX kernel.

Add info or delete as appropriate:

• Relevant for XeTeX
• Relevant for LuaTeX
• Issue tracker has been searched for similar issues

Minimal example demonstrating the issue

\listfiles
\documentclass{article}
\usepackage{fontspec}
%\usepackage{unicode-math}  
\begin{document}
Some nonsense text \downbracefill

Some nonsense text  \upbracefill

$\overbrace{a lot of text here}$
\end{document}

Further details

up-to-date TL2019 pretest

File List article.cls 2018/09/03 v1.4i Standard LaTeX document class size10.clo 2018/09/03 v1.4i Standard LaTeX file (size option) fontspec.sty 2019/03/15 v2.7c Font selection for XeLaTeX and LuaLaTeX xparse.sty 2019-03-05 L3 Experimental document command parser expl3.sty 2019-04-06 L3 programming layer (loader) expl3-code.tex 2019-04-06 L3 programming layer l3pdfmode.def 2019-04-06 v L3 Experimental driver: PDF mode fontspec-luatex.sty 2019/03/15 v2.7c Font selection for XeLaTeX and LuaLaTeX fontenc.sty tuenc.def 2018/08/11 v2.0j Standard LaTeX file fontspec.cfg unicode-math.sty 2019/03/04 v0.8o Unicode maths in XeLaTeX and LuaLaTeX unicode-math-luatex.sty 2019/03/04 v0.8o Unicode maths in XeLaTeX and LuaLaTe X l3keys2e.sty 2019-03-05 LaTeX2e option processing using LaTeX3 keys filehook.sty 2011/10/12 v0.5d Hooks for input files fix-cm.sty 2015/01/14 v1.1t fixes to LaTeX ts1enc.def 2001/06/05 v3.0e (jk/car/fm) Standard LaTeX file lualatex-math.sty 2019/01/21 v1.8 Patches for mathematics typesetting with Lu aLaTeX etoolbox.sty 2018/08/19 v2.5f e-TeX tools for LaTeX (JAW)

The output with loading unicode-math:

[wspr]

Thanks for bringing this to my attention — this is similar to some of the stretchy arrow problems we have…