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From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Value of Metapost variable as a label
Date: Tue, 24 Mar 2009 00:16:47 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LNX.2.00.0903240011080.7016@ybpnyubfg.ybpnyqbznva> (raw)
In-Reply-To: <87mybbfzsq.fsf@gmail.com>

On Mon, 23 Mar 2009, Eythan Weg wrote:

>
> Aditya Mahajan <adityam@umich.edu>
> Sun, 22 Mar 2009 22:24:17 -0400 (EDT)
>
>   On Mon, 23 Mar 2009, Mojca Miklavec wrote:
>
>   >> This however fails:
>   >> k:=2;
>   >> label.bot(textext("$1\over" & decimal k & "$"), (10,0)) ;
>   >
>   > Try with \frac instead.
>
>   Or prevent expansion of \over
>
>   label.bot(textext("$1\noexpand\over" & decimal k & "$"), (10,0)) ;
>
> Why \atop or \choose do not need \noexpand?
> What is special about \over?

It is redefined by ConTeXt to be a useful command in text mode.

\starttext

\section[sec:test] {Some section}

See \over[sec:test]

\stoptext

Hans, is it OK to change the definitions in core-def to

\ifnum\texengine=\luatexengine
     \ifx\in   \undefined\else \let\normalmathin   \in 
\unexpanded\def\in   {\mathortext\normalmathin   \dospecialin   } \fi
     \ifx\at   \undefined\else \let\normalmathat   \at 
\unexpanded\def\at   {\mathortext\normalmathat   \dospecialat   } \fi
     \ifx\about\undefined\else \let\normalmathabout\about 
\unexpanded\def\about{\mathortext\normalmathabout\dospecialabout} \fi
     \ifx\from \undefined\else \let\normalmathfrom \from 
\unexpanded\def\from {\mathortext\normalmathfrom \dospecialfrom } \fi
     \ifx\over \undefined\else \let\normalmathover \over 
\unexpanded\def\over {\mathortext\normalmathover \dospecialabout} \fi
\fi


(added \unexpanded). This is certainly useful for \in and \over, maybe not 
so much for the other three.

Aditya
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      reply	other threads:[~2009-03-24  4:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-21 20:39 Curiouslearn
2009-03-21 22:04 ` Aditya Mahajan
2009-03-21 22:40   ` Curious Learn
2009-03-22  2:53     ` Eythan Weg
2009-03-23  0:36       ` Mojca Miklavec
2009-03-23  2:24         ` Aditya Mahajan
2009-03-24  1:57           ` Eythan Weg
2009-03-24  4:16             ` Aditya Mahajan [this message]

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