Hmm, it works for Persian because this uses less diacritics than Arabic. The following fails with LMTX:

\definefontfamily[main][serif][notonaskharabic][features=arabic]

\setupdirections[bidi=global,method=one]

\setupbodyfont[main]

\starttext

\obeylines

%https://www.letsstartthinking.org/Islam/quran-short-phrases-and-verses.php

بِسْمِ اللَّـهِ الرَّحْمَـٰنِ الرَّحِيمِ

\stoptext

Hi, Hans. Could you please check this out? It works for MKIV, but in LMTX vowels are misplaced. Thank you in advance.

Jairo


El jue, 7 de ene. de 2021 a la(s) 08:48, Jairo A. del Rio (jairoadelrio6@gmail.com) escribió:
I didn't test it, but I could with some Iranian song lyrics as I did last time...

Jairo

El jue, 7 de ene. de 2021 a la(s) 01:33, <denis.maier@ub.unibe.ch> escribió:

Hi

Does that work now?

Best,

Denis

 

Von: ntg-context <ntg-context-bounces@ntg.nl> Im Auftrag von Jairo A. del Rio
Gesendet: Dienstag, 24. November 2020 08:12
An: mailing list for ConTeXt users <ntg-context@ntg.nl>
Betreff: [NTG-context] Some ligatures don't work in latest LMTX

 

Hi everyone. The following example works fine with MkIV, but fails with latest LMTX.
To be specific, the lam-alif ligature isn't working. Compile with both to see differences.
Majalla is a Windows font, so I guess it's available for testing:

\mainlanguage[arabic]
\definefontfeature
  [arabic]
  [mode=node,language=dflt,script=arab,
   init=yes,medi=yes,fina=yes,isol=yes,
   liga=yes,dlig=yes,rlig=yes,clig=yes,
   mark=yes,mkmk=yes,kern=yes,curs=yes]
\definefontfamily[main][serif][sakkalmajalla][features=arabic]
\setupbodyfont[main]
\setupdirections[bidi=global]
\starttext
أهلاً وسهلاً
\stoptext
 
Is that a bug or are more features to be specified? Thank you in advance.
Jairo
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