[texhax] (no subject)

[Chris Rowley]

Philip TAYLOR [PC336/H-XP] wrote --

> --------
> \ifcase \count 0 \def \C{&0}
> \or \def \C{&1}
> \or \def \C{&2}
> \or \def \C{&3}
> \else \def \C{&4}
> \fi
> \end
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Similarly, LaTeX does this:

    \ifcase\@eqcnt \def\reserved at a{& & &}\or \def\reserved at a{& &}%
     \or \def\reserved at a{&}\else
       \let\reserved at a\@empty
       \@latex at error{Too many columns in eqnarray environment}\@ehc\fi
     \reserved at a

I (and, I hope, Phil:-) could explain why this works but

  \ifcase \@eqncnt & & & \or   etc

does  not ... but that needs a whole mailing list all to itself:-).


chris