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From: Hans Hagen <pragma@wxs.nl>
To: ntg-context@ntg.nl
Subject: Re: [fontloader] positioning of diacritics
Date: Mon, 15 Dec 2014 13:34:48 +0100	[thread overview]
Message-ID: <548ED568.8060400@wxs.nl> (raw)
In-Reply-To: <20141215070816.GA25478@acheron>

On 12/15/2014 8:08 AM, Philipp Gesang wrote:
> Good morning!
>
> This report by Github user SverreStausland has been lingering on
> the Luaotfload tracker for a while: There appears to be a
> difference between how certain faces of the Libertine family
> handle the placement of diacritics.
>
> With Version 5.1.2 of the family [0], the "RZI" version
> (fullname: “Linux Libertine O Semibold Italic”) shows a different
> behavior than its “RZ” companion (“Linux Libertine O Semibold”).
> Short demonstration in Context:
>
>      \definefontfeature [ourfeats] [default] [mode=node]
>
>      \starttext
>        \start \definedfont [file:LinLibertine_RI.otf*ourfeats]  V\char"0306 \stop
>        \start \definedfont [file:LinLibertine_RZI.otf*ourfeats] V\char"0306 \stop
>      \stoptext
>
> Note the misaligned combining breve above the latter. An
> equivalent test for Plain [1] shows that the correct position
> information is there somewhere in the font, since the Xetex
> engine typesets it correctly.

it's a bug in the font:

uni0306 in the second one has class "base" while in the first one it has 
class "mark" and context checks on that

\enabletrackers[otf.bugs]

> Best regards,
> Philipp
>
> [0] MD5 hashes of the files:
>
>      4bfd3481c1486f5d1ea13304981df7a6  LinLibertine_RZI.otf
>      153765bd2b29d6026fb2fa0b198a4995  LinLibertine_RZ.otf
>
> [1] https://bitbucket.org/phg/lua-la-tex-tests/src/tip/pln-diacritics-1.tex
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


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  reply	other threads:[~2014-12-15 12:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-15  7:08 Philipp Gesang
2014-12-15 12:34 ` Hans Hagen [this message]
2014-12-15 20:43   ` Philipp Gesang
2014-12-15 20:59     ` Herbert Voss
2014-12-15 21:16       ` Philipp Gesang

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