On 11/19/2022 11:20 PM, Orders wrote:
I run luatex for plain TeX using the miktex installation under linux
mint 21. I upgraded the miktex installation today, and single-character
subscripts and superscripts cause an error.
For example, $x_1$ produces the following error
! \textfont-1 is undefined (character 49).
l.2 The incorrect variable is $x_1$
Enclosing the sub/superscript in braces ($x_{1}$) fixes the problem.
A minimal test program is as follows:
\input luaotfload.sty
The incorrect variable is $x_1$. The correct variable is $x_{1}$.
\end
Is there any change which might cause this? Is this a miktex problem?
maybe you're using the experimental version, can you try
\variablefam=-1 % or 99 or so
if that works, you just have to wait till a pending 'default value'
patch bubbles up
Hans
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