[Dev-luatex] Bug in \letcharcode

[Marcel Krüger]

 ---- On Mon, 22 Oct 2018 22:06:56 +0200 luigi scarso <luigi.scarso at gmail.com> wrote ----  
 >  
 >  
 > On Mon, Oct 22, 2018 at 9:58 PM Marcel Krüger <tex at 2krueger.de> wrote: 
 >  
 > Thank you for the report. Do you have a sample document ? 
 >  
 
On my system at least this is triggered by the following LuaLaTeX document: 
 
\documentclass{article} 
\usepackage{unicode-math} 
\show\document 
\letcharcode"305=\relax 
\show\document 
\begin{document} 
\end{document} 
 
Beside failing during \begin{document}, you can see that between the `\show\document` lines 
a occurence of `\ifdim \topskip <1sp` changes to `\ifdim ̅<1sp`. 
 
I could not reproduce it with ConTeXt/plain yet.