* [fontloader] positioning of diacritics
@ 2014-12-15 7:08 Philipp Gesang
2014-12-15 12:34 ` Hans Hagen
0 siblings, 1 reply; 5+ messages in thread
From: Philipp Gesang @ 2014-12-15 7:08 UTC (permalink / raw)
To: ConTeXt ML
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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.
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
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [fontloader] positioning of diacritics
2014-12-15 7:08 [fontloader] positioning of diacritics Philipp Gesang
@ 2014-12-15 12:34 ` Hans Hagen
2014-12-15 20:43 ` Philipp Gesang
0 siblings, 1 reply; 5+ messages in thread
From: Hans Hagen @ 2014-12-15 12:34 UTC (permalink / raw)
To: ntg-context
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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___________________________________________________________________________________
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [fontloader] positioning of diacritics
2014-12-15 12:34 ` Hans Hagen
@ 2014-12-15 20:43 ` Philipp Gesang
2014-12-15 20:59 ` Herbert Voss
0 siblings, 1 reply; 5+ messages in thread
From: Philipp Gesang @ 2014-12-15 20:43 UTC (permalink / raw)
To: mailing list for ConTeXt users
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···<date: 2014-12-15, Monday>···<from: Hans Hagen>···
> 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]
Thanks for the reply and for the pointer. That tracker is indeed
pretty handy!
I attempted to open a bug report on the Libertine tracker but
Sourceforge refuses to cooperate :/ Maybe next time.
Best regards,
Philipp
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___________________________________________________________________________________
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-12-15 7:08 [fontloader] positioning of diacritics Philipp Gesang
2014-12-15 12:34 ` Hans Hagen
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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