shorthands for hyphens with \penalty, \allowbreak, breaking up ligatures etc.

shorthands for hyphens with \penalty, \allowbreak, breaking up ligatures etc.

[Oliver Heins]

In LaTeX with babel option german there are several shortcuts needed for
typesetting german texts with their large amount of composita.  Some of
them are defined in Context, too, but not all (maybe I didn't find them
yet).  In typesetting german there is the need of breaking up some
ligatures, too.

Here are some examples of what I'm talking about:

composita      | line break | Babel shortcut    |  pure TeX-Code
---------------|------------|-------------------|------------------------
(Kinder-)Armut | (Kinder-)  | (Kinder"~)""Armut | (Kinder\protect10000
               | Armut      |                   | -)\allowbreak Armut
               |            |                   |
Bundestag und  | (...) und  | (...) und "~rat   | (...) und \hbox{-rat}
-rat           | -rat       |                   | [\protect1000 doesn't
               |            |                   | seem to work here]
----------------------- breaking up ligatures ---------------------------
Auffassung     | Auffassung | Auf"|fassung      | ??? (babel code:
               | (not       |                   | \textormath{\penalty\@M
               | Auffassung) |                   | \discretionary{-}{}%
               |            |                   | {\kern.03em}%
               |            |                   | \allowhyphens}{}%)

Is there any context way to define these kind of shorthands?  (Babel
has the \declare@shorthand internal command.)

TIA,
 olli


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Re: shorthands for hyphens with \penalty, \allowbreak, breaking up ligatures etc.

[Taco Hoekwater]

Oliver Heins wrote:
> 
> Is there any context way to define these kind of shorthands?  (Babel
> has the \declare@shorthand internal command.)

None are predefined, but you can install your own operations into
context's || discretionary command.

Try this, I think it is ok:

\definetextmodediscretionary {-)}
   {\prewordbreak \discretionary{-)}{}{-)}\prewordbreak}

\definetextmodediscretionary {!-}
   {\hbox{-}}

\definetextmodediscretionary {ff}
   {f\discretionary{-}{}{}\kern.03em\prewordbreak f}

\starttext

(Kinder-)Armut -rat Auffassung

(Kinder|-)|Armut |!-|rat Au|ff|assung

\hsize 0pt

(Kinder-)Armut -rat Auffassung

(Kinder|-)|Armut |!-|rat Au|ff|assung

\stoptext

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Re: shorthands for hyphens with \penalty, \allowbreak, breaking up ligatures etc.

[Wolfgang Schuster]

Am 14.11.2009 um 11:45 schrieb Taco Hoekwater:

> (Kinder|-)|Armut |!-|rat Au|ff|assung

Auf|*|fassung

Wolfgang

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|-| broken? (was: shorthands for hyphens with \penalty, \allowbreak, breaking up ligatures etc.)

[Oliver Heins]

Taco Hoekwater <taco@elvenkind.com> writes:

> Oliver Heins wrote:
>>
>> Is there any context way to define these kind of shorthands?  (Babel
>> has the \declare@shorthand internal command.)
>
> None are predefined, but you can install your own operations into
> context's || discretionary command.
>
> Try this, I think it is ok:

Thank you, Taco, it works.

I changed the definition of

> \definetextmodediscretionary {ff}
>   {f\discretionary{-}{}{}\kern.03em\prewordbreak f}

to 

\definetextmodediscretionary {!!}
  {\discretionary{-}{}{}\kern.03em\prewordbreak}

because the other ligatures (fl, fi, ft, fj etc.) might have to be
broken up, too.


However, I noticed that the |-| discretionary command produces wrong
results:

Ein|-|Euro|-|Job

Ein
-Euro
-Job

regardless of your definitions.


\starttext

\hsize 1em

Ein|-|Euro|-|Job

\stoptext

-- 
Oliver Heins heins@sopos.org    http://oliverheins.net/
http://blog.overheins.net/     F27A BA8C 1CFB B905 65A8
http://scriptorium-adp.de/     2544 0F07 B675 9A00 D827
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