[EXT] Re: error with lualatex but not with xelatex

[David Carlisle]

On Thu, 27 Jul 2023 at 09:53, Philip Taylor (RHBNC) <P.Taylor at rhul.ac.uk>
wrote:

> On 27/07/2023 09:40, David Carlisle wrote:
>
>
>
> On Thu, 27 Jul 2023 at 08:22, Zdenek Wagner <zdenek.wagner at gmail.com>
> wrote:
>
>> Hi all,
>>
>> this is a matter of Unicode shaping and you can see it also with
>> Devanagari fonts. All of them work with xelatex but not with lualatex
>> and there is no error message, just the output is wrong. I have not
>> tried with TL 2023.
>>
>> Zdeněk Wagner
>> https://www.zdenek-wagner.eu/
>>
>> If they work in xelatex they should work in lualatex if you use harfbuzz,
> I would guess?
>
> A naïve question, but how would one know if one uses harfbuzz ?
>
>
>
If loading fonts with fontspec, you specify this per font eg

\setmainfont[Renderer = HarfBuzz]{texgyretermes-regular.otf}
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