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Re: [css-text] Arabic letters connecting between elements with display: inline

From: Asmus Freytag <asmusf@ix.netcom.com>
Date: Tue, 27 May 2014 09:43:57 -0700
Message-ID: <5384C0CD.3030506@ix.netcom.com>
To: Lina Kemmel <LKEMMEL@il.ibm.com>, Matitiahu Allouche <matitiahu.allouche@gmail.com>
CC: 'Behdad Esfahbod' <behdad@behdad.org>, 'fantasai' <fantasai.lists@inkedblade.net>, public-i18n-bidi@w3.org, 'WWW International' <www-international@w3.org>, www-style@w3.org
On 5/27/2014 5:51 AM, Lina Kemmel wrote:
> I think one of possible solutions could be painting to 2 different graphic
> contexts.
> I.e. paint the whole ligature to one GC while lam is clipped out, and
> paint the whole ligature again to another GC with alif being clipped out.
> Of course, to simulate a single lam-alif, accurate measurements to
> properly set positions/clipping would be needed.
If you magically know the extent of the "lam" part of the ligature and 
the "alif" part of the ligature...

I think inserting markup between parts of an obligatory (or intended) 
ligature is a mistake by the author and requiring complex support to 
force this to "work" is counter productive.

On the contrary, the expectation should be clear that ligatures are 
broken, so that authors can get visual feedback and proof their work.

A./
>
> Regards,
> Lina
>
>   
>
>
>
> "Matitiahu Allouche" <matitiahu.allouche@gmail.com>
> 27/05/2014 15:27
>
> To
> "'Asmus Freytag'" <asmusf@ix.netcom.com>, "'Behdad Esfahbod'"
> <behdad@behdad.org>, "'fantasai'" <fantasai.lists@inkedblade.net>,
> <public-i18n-bidi@w3.org>
> cc
> "'WWW International'" <www-international@w3.org>, <www-style@w3.org>
> Subject
> RE: [css-text] Arabic letters connecting between elements with  display:
> inline
>
>
>
>
>
>
> Asmus Freytag wrote:
> " I can see why an expectation that color (or underlining) should not
> affect shaping is both reasonable and useful.
> ...
> For generalized font and style breaks, I think it would be enough to
> recommend that these are not intended to break shaping runs.
> ...
> How would you handle the lam-alif ligature, if it had a font or style
> break between the two letters?"
>
> I will add that even a color change, which appears to us as reasonable and
> useful, is not so easy to realize when done between  lam and alif.
>
> --
> Shalom (Regards),  Mati
>
>
>
>
>
>
Received on Tuesday, 27 May 2014 16:44:19 UTC

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