bug#32345: 12.1.1; wrong preview position for four-byte utf-8 encoded character (xelatex)

[David Kastrup]

jfbu <address@hidden> writes:

> I obtain partial success with
>
> \documentclass{article}
> \usepackage{unicode-math}
> \begin{document}
>
> Test: $𝒞$
>
> \end{document}

[...]

> Further the log contains indication something went wrong indeed
>
> l.5 Test: $
>            풞$
> Preview: Tightpage -32891 -32891 32891 32891
> ./testpreview.tex:5: Preview: Snippet 1 ended.(456786+9830x428605).

Maybe you should bother to mention what you consider "indication
something went wrong indeed".  preview-latex produces error messages on
purpose.  That's the only way to get to the right column.

The problem here is that the character in the error message appears to
be a different character from what is in the source file, so
preview-latex isn't able to correlate it with the source.

-- 
David Kastrup