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

Dear Otared, Am Samstag, den 04.06.2011, 23:59 +0200 schrieb Otared Kavian:

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