Nested \mathcal in \mathrm fails

[eg9]

Compiling the following file with either XeLaTeX or LuaLaTeX, the calligraphic A doesn't show up:

\documentclass{article}
\usepackage{unicode-math}
\setmainfont{TeX Gyre Pagella}
\begin{document}
$A\mathrm{\mathcal{A}}A$
\end{document}

The log file shows

Missing character: There is no 𝒜 in font TeX Gyre Pagella/OT:script=latn;language=DFLT;mapping=tex-text;!

This can be solved by using \symrm instead of \mathrm, but it is a serious flaw nonetheless, because also \DeclareMathOperator{\foo}{A\mathcal{A}A} (after loading amsmath) fails in the same fashion.

If, instead, the text font is set before loading unicode-math, the issue doesn't show:

\documentclass{article}
\usepackage{fontspec}
\setmainfont{TeX Gyre Pagella}
\usepackage{unicode-math}
\begin{document}
$A\mathrm{\mathcal{A}}A$
\end{document}

Also \DeclareMathOperator works with this setup.

Reference: http://tex.stackexchange.com/q/313584/4427

[bodograumann]

This seems to be fixed in 2017/01/27 v0.8d. Similarly to my own problem. Though I would be interested what exactly the problem was and which commit fixed it.

[wspr]

@canaaerus — the implementation of unicode-math is a bit tangled up... sometimes a fix in one area magically fixes other problems :) Glad to hear this has been resolved.

[wspr]

This doesn't actually seem to be fixed (any more, perhaps)…