Kdtyjb

Following example shows only the square and lozenge (XeTeX, Version 3.14159265-2.6-0.99998) the other three symbols being shown as spaces whereas if unicode-math is removed, the symbols are shown correctly. Is there a way to show the symbols correctly whilst using unicode-math?

documentclass{article}



usepackage{amssymb}

usepackage{unicode-math}



begin{document}

$$ablacksquare blacklozenge blacktriangle blacktriangledown bigstar b$$

end{document}

The log shows

Missing character: There is no ▴ in font [latinmodern-math.otf]/OT:script=math;

language=DFLT;!

Missing character: There is no ▾ in font [latinmodern-math.otf]/OT:script=math;

language=DFLT;!

Missing character: There is no ★ in font [latinmodern-math.otf]/OT:script=math;

language=DFLT;!

so the font doesn't contain these characters. You could try a different main font, or define these to come from the ams fonts

For example I get

if I add

setmathfont{Stix Two Math}

I wouldn't mix amssymb with unicode-math.

You can supply the missing glyphs from another math font.

documentclass{article}



usepackage{unicode-math}



setmathfont{Latin Modern Math}

setmathfont{STIX Two Math}[

  range={mdlgblklozenge,mdblksquare,blacktriangle,blacktriangledown,bigstar}

]



providecommand{blacksquare}{mdblksquare}

providecommand{blacklozenge}{mdlgblklozenge}



begin{document}



[

ablacksquare blacklozenge blacktriangle blacktriangledown bigstar b

]



end{document}

There are smaller variants; it makes sense to load also them and then decide about the size at the end.

documentclass{article}



usepackage{unicode-math}



setmathfont{Latin Modern Math}

setmathfont{STIX Two Math}[

  range={

    mdlgblklozenge,

    smblklozenge,

    mdblksquare,

    smblksquare,

    blacktriangle,

    blacktriangledown,

    bigstar,

  },

]



providecommand{blacksquare}{smblksquare}

providecommand{blacklozenge}{smblklozenge}



begin{document}



[

ablacksquare blacklozenge blacktriangle blacktriangledown bigstar b

]



end{document}

You're not tied to using math fonts for specific symbols. For instance, you might resort to a standard font supplying them.

documentclass{article}



usepackage{amsmath}

usepackage{unicode-math}



newfontface{altfont}{FreeSerif}



AtBeginDocument{%

  providecommand{blacksquare}{text{altfontsymbol{"25A0}}}%

  providecommand{blacklozenge}{text{altfontsymbol{"29EB}}}%

  renewcommand{blacktriangle}{text{altfontsymbol{"25B2}}}%

  renewcommand{blacktriangledown}{text{altfontsymbol{"25BC}}}%

  renewcommand{bigstar}{text{altfontsymbol{"2605}}}%

}



begin{document}



[

ablacksquare blacklozenge blacktriangle blacktriangledown bigstar b

]



end{document}