funny ligatures with Arabic script

[ralessi]

Hi Philipp,

This mwe:

\documentclass[12pt]{article}

\usepackage{luaotfload}

\font\arabicfont = {name:Amiri:script=arab} at 12pt

\begin{document}

\textdir TRT\arabicfont
اَلحِمَارُ، اَلجَدِيدُ، اَلحَارِثُ.

\end{document}

gives me this, where the last two words are obvioulsy wrong::

I suspect this issue may be related to the latest luaotfload and not to Amiri for XeLaTeX + fontspec do not have it. I checked the following mwe with `xelatex:

\documentclass[12pt]{article}

\usepackage{fontspec}

\newfontfamily\arabicfont[Script=Arabic]{Amiri}

\usepackage{polyglossia}
\setdefaultlanguage{arabic}

\begin{document}
اَلحِمَارُ، اَلجَدِيدُ، اَلحَارِثُ.
\end{document}

Best,

Robert

[ralessi]

[Update] Other ligatures are broken too, as in the name of God for example. Let's assume that they all are related to one and the same issue.

[phi-gamma]

Dear Robert,

thanks for reporting. I’m not qualified to judge that output but
I do notice the difference to the Xetex version.

This mwe:

\documentclass[12pt]{article}
\usepackage{luaotfload}
\font\arabicfont = {name:Amiri:script=arab} at 12pt
\begin{document}
\textdir TRT\arabicfont
اَلحِمَارُ، اَلجَدِيدُ، اَلحَارِثُ.
\end{document}

gives me this, where the last two words are obvioulsy wrong::

It happens in Context too, so it’s most likely a problem in the
fontloader:

http://i.imgur.com/ihnxEEs.png

(Clockwise starting at the top: Luatex, Context, Xelatex.)

I’ll forward the issue to Hans.
Philipp

[ralessi]

Dear Philipp, Yes, what happens in luatex also happens in context. Thank you for your efforts, let me know if I can be of any help. Robert

[ralessi]

Many thanks, it now works like a charm!

[u-fischer]

I'm closing this as probably resolved. Feel free to reopen if something still isn't working.

[ralessi]

Yes, I confirm it has been resolved.