[XeTeX]   in XeTeX

[Zdenek Wagner]

2011/11/12 Petr Tomasek <tomasek at etf.cuni.cz>:
> On Fri, Nov 11, 2011 at 03:26:36PM +0100, Le Farfadet Spatial wrote:
>>
>> Hello everybody out there!
>>
>> On 11/11/2011 15:11, Zdenek Wagner wrote:
>> >How does XeTeX convert \language to the rules
>>
>> As far as I know, the language is a parameter transmitted to packages
>> that have different rules depending on the language used. It also
>> affects, for instance, the way punctuation is composed.
>>
>> >for inserting
>> >nonbreakable spaces after nonsyllabic prepositions in Czech and
>> >Slovak?
>>
>> In some cases, it is possible that XeTeX does not have a way to know
>> that a non breakable space is needed. In such cases, use tilda (~).
>
> Why not NBSP which is standartized?
>
Because we need a space that can be stretched or shrinked. Glyphs in
fonts have fixed width and an NBSP glyph may not be present in all
fonts. In all formats ~ is active as default and defined (most
probably) as \nobreak\space which is what we need in TeX.

>> >How does it know that I am in "verbatim" mode and the
>> >nonbreakable spaces must not be used?
>>
>> When you are using verbatim mode, it means that you ask XeTeX not to do
>> the processing it usually does, but just to print the characters that
>> are given inside the verbatim environment. Therefore, if you put a
>> unicode symbol in a verbatim environment, the standard behaviour is to
>> print this symbol. When you put a tilda in verbatim environment, the
>> expected result is a tilda. If you do not want a character to appear in
>> a verbatim environment, just do not put it in.
>>
>>     Best regards.
>>
>>                                     Yoann
>>
>> --
>> L'antre du farfadet :
>> http://le.farfadet.spatial.free.fr/
>> Textes, musiques et peintures
>>
>>
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> --
> Petr Tomasek <http://www.etf.cuni.cz/~tomasek>
> Jabber: butrus at jabbim.cz
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-- 
Zdeněk Wagner
http://hroch486.icpf.cas.cz/wagner/
http://icebearsoft.euweb.cz