Unicode character <U+009C> (U+009C)

[Tobias Hilbricht]

Am Freitag, dem 07.01.2022 um 14:32 +0100 schrieb Wolfgang Engelmann
via lyx-users:
> If I run the attached lyx file,I get an error:
> Missing character: There is no œ (U+009C) in font 
> [LibertinusSerif-Regular.otf]
> 
> show output anyway gives the attached pdf:
> 
> nuclear ancient Ca2+
> (Na+ /Ca2+ exchanger)
> Ca 2+ homeostasis
> �Ca2+ dependent kinase
> 
> The exported luatex tex file was tested with this bash line
> (oneline!, 
> thanks to people from the Linux User Group Tuebingen)
> 
> grep -P "[\xc2\x9c]" A-07-C.tex | grep --color=auto -P 
> ".{0,2}[\xc2\x9c].{0,2}" > A.txt
> 
> and tells
> 
> %%Package inputenc Error: Unicode character œ (U+009C)
> œ$\mathrm{Ca^{2+}}$ dependent kinase
> 
> Could someone tell me, why in the first and the second line of the
> pdf 
> file the Ca^2+ is shown correctly, whereas it is only shown correctly
> if 
> I do not (3rd line) put it in mathrm (as done in the 4th line)
> 
> I also wonder whether this square/cross in front of the 4th line can
> be 
> searched for under lyx, since it seems to mark extended regular
> expressions.
> 
> Wolfgang

Wolfgang,

attached your formulas in a consistent look with mhchem. I called
Libertinus fonts the LyX way via Document -> Settings -> Fonts: Use non
TeX Fonts, then choosing Libertinus fonts in the drop down list.
Libertinus Math is called by \setmathfont{Libertinus Math} in the LyX
preamble.
The error message is the result of the symbol set in front of the line

œ$\mathrm{Ca^{2+}}$ dependent kinase

Have you put this symbol just before the first $ on purpose? If so,
what is it supposed to be?

Yours
Tobias 
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