\halign

\halign

[Eythan Weg]

Hi,

I have just installed beta. 

The line:

\starttext
   \halign{&\hfil#\hfil\quad\cr This& That\cr1&2\cr} 
\stoptext

is not typeset and the & are left in place.  What could be the problem?

Thank you.
Eythan     

___________________________________________________________________________________
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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \halign

[Wolfgang Schuster]

Am 24.02.2011 um 17:56 schrieb Eythan Weg:

> 
> Hi,
> 
> I have just installed beta. 
> 
> The line:
> 
> \starttext
>   \halign{&\hfil#\hfil\quad\cr This& That\cr1&2\cr} 
> \stoptext
> 
> is not typeset and the & are left in place.  What could be the problem?

Since a while ^, _ and & can be used in text mode like any other character.

You can disable this with \donknuthmode at the begin of your document or
use the \aligntab where you would normally use & but the best thing is
to use one of contexts build in table environment.

Wolfgang

___________________________________________________________________________________
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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \halign

[Eythan Weg]

Wolfgang Schuster <schuster.wolfgang@googlemail.com>
Thu, 24 Feb 2011 22:20:01 +0100

   Am 24.02.2011 um 17:56 schrieb Eythan Weg:
   
   > 
   > Hi,
   > 
   > I have just installed beta. 
   > 
   > The line:
   > 
   > \starttext
   >   \halign{&\hfil#\hfil\quad\cr This& That\cr1&2\cr} 
   > \stoptext
   > 
   > is not typeset and the & are left in place.  What could be the problem?
   
   Since a while ^, _ and & can be used in text mode like any other character.
   
   You can disable this with \donknuthmode at the begin of your document or
   use the \aligntab where you would normally use & but the best thing is
   to use one of contexts build in table environment.
   
   Wolfgang

Thank you.  I think that \halign, being a primitive of tex, should be
respected.  If a user wants to use it, it should be usable
unconditionally.  

Eythan 

___________________________________________________________________________________
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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \halign

[Khaled Hosny]

On Fri, Feb 25, 2011 at 11:16:06AM -0500, Eythan Weg wrote:
> 
> Wolfgang Schuster <schuster.wolfgang@googlemail.com>
> Thu, 24 Feb 2011 22:20:01 +0100
> 
>    Am 24.02.2011 um 17:56 schrieb Eythan Weg:
>    
>    > 
>    > Hi,
>    > 
>    > I have just installed beta. 
>    > 
>    > The line:
>    > 
>    > \starttext
>    >   \halign{&\hfil#\hfil\quad\cr This& That\cr1&2\cr} 
>    > \stoptext
>    > 
>    > is not typeset and the & are left in place.  What could be the problem?
>    
>    Since a while ^, _ and & can be used in text mode like any other character.
>    
>    You can disable this with \donknuthmode at the begin of your document or
>    use the \aligntab where you would normally use & but the best thing is
>    to use one of contexts build in table environment.
>    
>    Wolfgang
> 
> Thank you.  I think that \halign, being a primitive of tex, should be
> respected.  If a user wants to use it, it should be usable
> unconditionally.  

I've no idea from where you came with this impression, is is usually the
other way around; people are advised not to use low level TeX code where
context has higher level interfaces, else you are on your own and should
be aware of the implications/side effects.

I, for one, grateful that I know longer need to escape regular
characters in my documents just to keep supporting some obscure TeX
feature.

Regards,
 Khaled

-- 
 Khaled Hosny
 Egyptian
 Arab
___________________________________________________________________________________
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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \halign

[Hans Hagen]

On 25-2-2011 5:16, Eythan Weg wrote:
>
> Wolfgang Schuster<schuster.wolfgang@googlemail.com>
> Thu, 24 Feb 2011 22:20:01 +0100
>
>     Am 24.02.2011 um 17:56 schrieb Eythan Weg:
>
>     >
>     >  Hi,
>     >
>     >  I have just installed beta.
>     >
>     >  The line:
>     >
>     >  \starttext
>     >    \halign{&\hfil#\hfil\quad\cr This&  That\cr1&2\cr}
>     >  \stoptext
>     >
>     >  is not typeset and the&  are left in place.  What could be the problem?
>
>     Since a while ^, _ and&  can be used in text mode like any other character.
>
>     You can disable this with \donknuthmode at the begin of your document or
>     use the \aligntab where you would normally use&  but the best thing is
>     to use one of contexts build in table environment.
>
>     Wolfgang
>
> Thank you.  I think that \halign, being a primitive of tex, should be
> respected.  If a user wants to use it, it should be usable
> unconditionally.

in context a more abstract coding is advertised; if you want to use 
halign in for instance a macro definition, you can surround it by

\unprotect

macro def

\protect

anyhow, when using halign directly in your document, don't expect too 
much from spacing

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 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
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________