Re: [NTG-context] [solved] \define[1]\command or \define\command[1]? (was: math: command for absolute value: `\define\abs[1]{\lvert #1 \rvert}` throws `\lvert ->\Udelimiter`.)

5 Jun 2011

      Dear ConTeXt folks,

Am Sonntag, den 05.06.2011, 12:11 +0200 schrieb Paul Menzel:
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Am Samstag, den 04.06.2011, 23:59 +0200 schrieb Otared Kavian:
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I think the error comes from your way of using \define: you use
   \define\abs[1]{\lvert #1 \rvert}
instead of
  \define[1]\abs{\lvert#1\rvert}
the following works fine for me:
\starttext
%\define[1]\abs{|#1|} % this works
\define[1]\abs{\lvert#1\rvert} % this works too
$\abs{-1} = 1$
\stoptext
thank you very much for the solution. I took my definition from the Wiki
[1].
Could the developers please clarify the correct syntax so that it can be
updated in the source or the Wiki.
I am sorry. I messed up and confused the LaTeX syntax (?) (`texdoc
amsldoc`) and the one in the Wiki.

I am sorry for the noise.

Thanks,

Paul
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[1] http://wiki.contextgarden.net/Reference/en/define