[luatex] luatex/luaotf bug: kerns are missing in discretionary nodes

luigi scarso luigi.scarso at gmail.com
Thu Dec 12 21:12:36 CET 2013

Can you add an issue to the tracker ?

 Il 12/dic/2013 21:03 "Petr Olsak" <petr at olsak.net> ha scritto:

> Philipp Gesang:
>  the kerns do show up in base mode:
>>  \font\f=file:lmroman10-regular:mode=base \f
> Thank you very much for your answer. But there is a misunderstanding. I
> needn't to help with my special document because I am not using luaTeX for
> my documents. Moreover, I personally know that there is the mode=base.
> I want only to report this serious bug. And it is really serious: the
> mode=node is set as default. It means that cca 90 percent documents
> produced by luaTeX has bad kerning and this is not a good reputation for
> luaTeX. Many users are not able to notice it and they produce bad documents.
> My question is: what will do the developers? OK, they are informed already
> so my bug report is irrelevant. How many users will waste the time with
> tracing the problem in the future until the bug will be solved?
>  From luaotfload documentation:
>  node mode works by processing TEX's internal node list directly at the
>> Lua end and supports a wider range of OpenType features.
>> By default luaotfload is in node mode, and base mode has to be requested
>> where needed, e. g. for math fonts.
> The last sentecne have to be polonged: ... or you need to typeset the text
> by correct kerning because default setting produces bad kerns.
> Best regards
> Petr Olsak
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