[luatex] possible engine bug: glyphs displaced
Ulrike Fischer
luatex at nililand.de
Thu Mar 2 18:51:41 CET 2017
I'm forwarding a discussion from the luaotfload issue tracker as it
is possible that it indicates a bug introduced between version 1.0.0
and 1.0.4
In the following document the ^^^^0645 is displaced to the left.
With luatex 1.0.0. (miktex) only if it is used in a \hbox.
With luatex 1.0.4. in all three cases.
The luaotfload version was the same, as fontloader I used the newest
from the context minimals.
So it looks as if some change in the engine was made -- perhaps to
correct the \hbox error -- which made the problem worse.
Some more details and some pictures can be found here:
https://github.com/lualatex/luaotfload/issues/410
Disclaimer: I can't read or write arabic or some other
right-to-left-script.
\documentclass{article}
\begin{document}
\textdir TRT
\font\amiri={file:amiri-regular.ttf:script=arab} at 80pt
\amiri
^^^^0637 ^^^^0645^^^^062d^^^^064a^^^^0637\par
\leavevmode\hbox dir TRT {^^^^0637 ^^^^0645^^^^062d^^^^064a^^^^0637}
\vbox dir TRT {^^^^0637 ^^^^0645^^^^062d^^^^064a^^^^0637}
\end{document}
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
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