Unicode Math – Using Double-Struck Math Fonts in unicode-math

Question

What is the math font of unicode-math that can get the following output:

since the following:

\documentclass{article}
\usepackage{unicode-math}
\begin{document}
$\symbb{R}$
\end{document}

results in

Answer 1

Mplus gets close:

Note: Barbara is right.

\documentclass{article}
%\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{unicode-math}
\begin{document}
{\Huge $\mathbb{R}$}
\end{document}

So the answer would be: either a truetype/opentype version of amsfonts, or unicode-math can still use legacy fonts, if desired.

unicode-math access is by $\symbb{R}$.

=============

Original post:

I've seen that one before.

A sort of sans libertine/helvetica flavour.

Some random samples, none with a straight leg:

\documentclass[12pt]{article}
\usepackage{fontspec}
\usepackage{xcolor}
\pagecolor{red!3}


\newcommand\SampleText{\symbol{"211D}}


\newfontface\fra{Arial Unicode MS}
\newfontface\frb{Cambria Math}
\newfontface\frc{DejaVu Math}
\newfontface\frd{DejaVu Math TeX Gyre}
\newfontface\fre{DejaVu Sans}
\newfontface\frf{DejaVu Sans Mono}
\newfontface\frg{DejaVu Serif}
\newfontface\frh{Fira Math}
\newfontface\fri{FreeSans}
\newfontface\frj{FreeSerif}
\newfontface\frk{FreeSerifAvvaShenouda}
\newfontface\frl{GFS Neohellenic Math}
\newfontface\frm{Honoka Antique-Kaku}
\newfontface\frn{Honoka Antique-Maru}
\newfontface\fro{HPMLinux Biolinum O}
\newfontface\frp{HPMLinux Libertine O}
\newfontface\frq{Kabala}
\newfontface\frr{Libertinus Math}
\newfontface\frs{Libertinus Mono}
\newfontface\frt{Libertinus Sans}
\newfontface\fru{Libertinus Serif}
\newfontface\frv{Libertinus Serif Display}
\newfontface\frw{Linux Biolinum}
\newfontface\frx{Linux Biolinum G}
\newfontface\fry{Linux Biolinum O}
\newfontface\frz{Lucida Sans Unicode}

\newcommand\printther[2]{{#1\huge    \SampleText} -- #2}


\begin{document}


\printther{\fra}{Arial Unicode MS}

\printther{\frb}{Cambria Math}

\printther{\frc}{DejaVu Math}

\printther{\frd}{DejaVu Math TeX Gyre}

\printther{\fre}{DejaVu Sans}

\printther{\frf}{DejaVu Sans Mono}

\printther{\frg}{DejaVu Serif}

\printther{\frh}{Fira Math}

\printther{\fri}{FreeSans}

\printther{\frj}{FreeSerif}

\printther{\frk}{FreeSerifAvvaShenouda}

\printther{\frl}{GFS Neohellenic Math}

\printther{\frm}{Honoka Antique-Kaku}

\printther{\frn}{Honoka Antique-Maru}

\printther{\fro}{HPMLinux Biolinum O}

\printther{\frp}{HPMLinux Libertine O}

\printther{\frq}{Kabala}

\printther{\frr}{Libertinus Math}

\printther{\frs}{Libertinus Mono}

%\printther{\frt}{Libertinus Sans}
%
%\printther{\fru}{Libertinus Serif}
%
%\printther{\frv}{Libertinus Serif Display}
%
%\printther{\frw}{Linux Biolinum}
%
%\printther{\frx}{Linux Biolinum G}
%
%\printther{\fry}{Linux Biolinum O}

\printther{\frz}{Lucida Sans Unicode}

{\fra \SampleText}
{\frb \SampleText}
{\frc \SampleText}
{\frd \SampleText}
{\fre \SampleText}
{\frf \SampleText}
{\frg \SampleText}
{\frh \SampleText}
{\fri \SampleText}
{\frj \SampleText}
{\frk \SampleText}
{\frl \SampleText}
{\frm \SampleText}
{\frn \SampleText}
{\fro \SampleText}
{\frp \SampleText}
{\frq \SampleText}
{\frr \SampleText}
{\frs \SampleText}
{\frt \SampleText}
{\fru \SampleText}
{\frv \SampleText}
{\frw \SampleText}
{\frx \SampleText}
{\fry \SampleText}
{\frz \SampleText}


\end{document}

====

For completeness, a fuller gallery, in parts, more systematically arranged.

(1) These are (some of) the ones with "Math" in the font name:

And then in order of decreasing coverage of the Letterlike Symbols unicode block:

(2)

(3)

(4)

(5)

(6)

And arbitrarily stop there, with a coverage of 20 out of 80 glyphs in the block.

There is obviously something very interesting going on with fonts.