[luatex] Upgraded luatex sub/super scripts

[Hans Hagen]

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



-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------