From: Khaled Hosny <khaledhosny@eglug.org>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Hans Hagen <pragma@wxs.nl>
Subject: Re: Arabic typesetting, one more
Date: Sun, 12 May 2013 10:23:35 +0200 [thread overview]
Message-ID: <20130512082335.GB27636@khaled-laptop> (raw)
In-Reply-To: <op.wwxuzhuepw6hmh@ishamid-pc>
On Sat, May 11, 2013 at 03:22:27PM -0600, Idris Samawi Hamid ادريس سماوي حامد wrote:
> Salaam, Huseyin,
>
> I missed this and other threads, it's been busy here...
>
> On Tue, 07 May 2013 23:35:25 -0600, H. Özoguz <h.oezoguz@mmnetz.de> wrote:
>
> >But with traditionalarabic it is worse than with arabtype. What
> >could be a way to fix this?
>
> Traditional Arabic is a uniscribe-compliant font, but not a fully
> opentype font. Uniscribe also supports older, pre-unicode protocols.
> In other words, TraditionalArabic is platform-dependent. So unless
> M$ has updated it in a recent OS, it will not work in ConTeXt MkIV.
It did (all its fonts actually), it now uses GPOS for mark placement.
> Since XeTeX uses the local libraries, then mkii/xetex on windows
> might work.
XeTeX does not use any system libraries for its OpenType layout, in the
past is was using ICU LayoutEngine and now it is using HarfBuzz, in all
platforms (i.e. a third party library, but not a system one). However,
HarfBuzz has heuristics to place marks based on glyph bounding boxes in
the case of GPOS absence (a bit similar to TeX's \accent but knows which
marks goes above or below or off the center).
Regards,
Khaled
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next prev parent reply other threads:[~2013-05-12 8:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-08 5:35 "H. Özoguz"
2013-05-08 8:18 ` Hans Hagen
2013-05-11 21:22 ` Idris Samawi Hamid ادريس سماوي حامد
2013-05-12 8:23 ` Khaled Hosny [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-05-07 18:10 "H. Özoguz"
2013-05-07 19:31 ` Hans Hagen
2013-05-07 11:32 "H. Özoguz"
2013-05-07 17:11 ` Hans Hagen
2013-05-07 11:31 "H. Özoguz"
2013-05-06 5:56 "H. Özoguz"
2013-05-03 17:29 "H. Özoguz"
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