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From: Taco Hoekwater <taco@elvenkind.com>
Newsgroups: gmane.comp.tex.context
Subject: Re: unic-033.tex and unic-034.tex
Date: Tue, 07 Jun 2005 23:35:47 +0200
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References: <20050607203722.GB5547@puritan.pcp.ath.cx>
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Nikolai Weibull wrote:
> I wrote the arrow parts of vector 033 as well.  Works OK.  Comments
> welcome.  I'd personally enjoy both being included in ConTeXt at
> some point.
> 
> For some reason one needs to do the "\numexpr(x+1) \unknownchar \or ..."
> trick for things to work.  Why?,

Braces do not end the \numexpr parsing engine, only \relax does
that (or something that does not fit the syntax). So it is
'normal' to use

   \numexpr x+1\relax \unknownchar

instead.

Taco