[texhax] tabs environment

[Johan Glimming]

Hi,

Here is another refinement of the "tabs" environment. I am using 
\usepackage{array} to support ! < and > (c.f. page 244 in 2ed of LaTeX 
Companion). However, I do not seem to be able to insert an 
environment/group like this (here: gather):

\newlength\tabsvspace
\setlength\tabsvspace{3pt}

% One argument = the number of columns
\newenvironment{tabs}[1][1]
  {\begin{tabular*}{\linewidth}
      
{@{}*{#1}{>{\begin{gather}}c<{\end{gather}}}@{}!{\vspace{\tabvspace}}}}
  {\end{tabular*}}

Why is this wrong? Can a gather environment not be nested like this 
using < and >?

Johan Glimming.