Re: \sh@ft in luatex

Re: \sh@ft in luatex

[Hans Hagen]

Idris Samawi Hamid wrote:

> Two things:
> 
> 1. The \sh@ft macro (from TeXBook, p.~356) does not work in luatex (see 
> test file, pdftex works);
> 
> 2. In any case: Is there a better way to do this (see test file)?

as taco mentioned ... most open type fonts have no italic correction

automatically figuring it out is not always an option, compare (in 
pdftex):

\sl \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A

\bs \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A

\it \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A

i can imagine that we start building a database with additional font 
parameters

Hans



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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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                                              | www.pragma-pod.nl
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Re: \sh@ft in luatex

[Idris Samawi Hamid]

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On Wed, 26 Dec 2007 12:32:50 -0700, Hans Hagen <pragma@wxs.nl> wrote:

> Idris Samawi Hamid wrote:
>
>> Two things:
>>
>> 1. The \sh@ft macro (from TeXBook, p.~356) does not work in luatex (see
>> test file, pdftex works);
>>
>> 2. In any case: Is there a better way to do this (see test file)?
>
> as taco mentioned ... most open type fonts have no italic correction
>
> automatically figuring it out is not always an option, compare (in
> pdftex):
>
> \sl \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> \bs \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> \it \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> i can imagine that we start building a database with additional font
> parameters

I spent a few hours on a workaround. Attached is my temporary code for  
Arabic transliteration. I found a way to define U-02BE and U-02BF for  
Latin Modern (thanks to Wolfgang and Peter for helping me with \ifx). It  
does work well but feel free to suggest improvements!

(A bug: \defineactivecharacter ḻ {\~l} does not work if \showboxes is  
invoked; weird)

Best wishes
Idris

-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

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Re: \sh@ft in luatex

[Hans Hagen]

Idris Samawi Hamid wrote:
> On Wed, 26 Dec 2007 12:32:50 -0700, Hans Hagen <pragma@wxs.nl> wrote:
> 
>> Idris Samawi Hamid wrote:
>>
>>> Two things:
>>>
>>> 1. The \sh@ft macro (from TeXBook, p.~356) does not work in luatex (see
>>> test file, pdftex works);
>>>
>>> 2. In any case: Is there a better way to do this (see test file)?
>>
>> as taco mentioned ... most open type fonts have no italic correction
>>
>> automatically figuring it out is not always an option, compare (in
>> pdftex):
>>
>> \sl \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>>
>> \bs \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>>
>> \it \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>>
>> i can imagine that we start building a database with additional font
>> parameters
> 
> I spent a few hours on a workaround. Attached is my temporary code for 
> Arabic transliteration. I found a way to define U-02BE and U-02BF for 
> Latin Modern (thanks to Wolfgang and Peter for helping me with \ifx). It 
> does work well but feel free to suggest improvements!
> 
> (A bug: \defineactivecharacter ḻ {\~l} does not work if \showboxes is 
> invoked; weird)

use \normalhbox cum suis when you want to use showboxes (which overloads 
the primitive box operations)


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \sh@ft in luatex

[Idris Samawi Hamid]

On Wed, 26 Dec 2007 13:47:26 -0700, Hans Hagen <pragma@wxs.nl> wrote:

>> (A bug: \defineactivecharacter ḻ {\~l} does not work if \showboxes is
>> invoked; weird)
>
> use \normalhbox cum suis when you want to use showboxes (which overloads
> the primitive box operations)

Hmm, it's more serious than that I'm afraid (utf-8 text follows):

===========
% engine=luatex

\starttext

\defineactivecharacter Ṣ {\d S}
\defineactivecharacter ḻ {\~l}
\defineactivecharacter ḻ {\normalhbox{\~l}}

Ṣādiq a\~l Aḻ\footnote{Ṣādiq a\~l Aḻ}

\stoptext
===========

The \~l does not work in the footnote in luatex. Is there a workaround?

Best
Idris

-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
___________________________________________________________________________________
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
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \sh@ft in luatex

[Hans Hagen]

Idris Samawi Hamid wrote:
> On Wed, 26 Dec 2007 13:47:26 -0700, Hans Hagen <pragma@wxs.nl> wrote:
> 
>>> (A bug: \defineactivecharacter ḻ {\~l} does not work if \showboxes is
>>> invoked; weird)
>> use \normalhbox cum suis when you want to use showboxes (which overloads
>> the primitive box operations)
> 
> Hmm, it's more serious than that I'm afraid (utf-8 text follows):
> 
> ===========
> % engine=luatex
> 
> \starttext
> 
> \defineactivecharacter Ṣ {\d S}
> \defineactivecharacter ḻ {\~l}
> \defineactivecharacter ḻ {\normalhbox{\~l}}
> 
> Ṣādiq a\~l Aḻ\footnote{Ṣādiq a\~l Aḻ}
> 
> \stoptext
> ===========
> 
> The \~l does not work in the footnote in luatex. Is there a workaround?



can you send a zipped file

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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