[Xy-pic] xymatrix in index

[Ross Moore]

Hello Chris,

On 28/01/2009, at 7:03 AM, Chris Heunen wrote:

> Dear Ross,
>
> It seems the problem is compatibility with the separate makeindex  
> program and/or the multind package.

You sent this:

> \indexentry{$\xymatrix{\ar@{->}[r]&}$, arrow}{1}
> This is makeindex, version 2.14 [02-Oct-2002] (kpathsea + Thai  
> support).
> Scanning input file notation.idx....done (1 entries accepted, 0  
> rejected).
> Sorting entries...done (0 comparisons).
> Generating output file notation.ind....done (5 lines written, 0  
> warnings).
> Output written in notation.ind.
> Transcript written in notation.ilg.
> \begin{theindex}
>
>   \item {->}[r]&}$, arrow, 1
>
> \end{theindex}

The problem is the @ symbol in:
    \index{$\xymatrix{\ar@{->}[r]&}$, arrow}

which is interpreted as a delimiter for the sorting tag
within the Index. You need to shield this '@',
  * using either:  "@
OR
  * by hiding it within a macro.

See the following coding example:

\usepackage[all]{xy}
\usepackage{multind}
\makeindex{A}
\begin{document}
fee\index{A}{fee}
figh\index{A}{fi}
foe\index{A}{fo}
\index{A}{$\xymatrix{ \ar"@{->}[r] & }$, arrow}
\DeclareRobustCommand{\xyindarrow}{$\xymatrix{ \ar@{->}[r] & }$}
\index{A}{\xyindarrow, arrow}
\printindex{A}{Index}

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Here is my  A.idx :

\indexentry{fee}{1}
\indexentry{fi}{1}
\indexentry{fo}{1}
\indexentry{$\xymatrix{ \ar"@{->}[r] & }$, arrow}{1}
\indexentry{\xyindarrow, arrow}{1}


giving the following for  A.ind :

\begin{theindex}

   \item $\xymatrix{ \ar@{->}[r] & }$, arrow, 1
   \item \xyindarrow, arrow, 1

   \indexspace

   \item fee, 1
   \item fi, 1
   \item fo, 1

\end{theindex}

The result is as shown in the attached image.


>
> Best,
> Chris

Hope this fixes it for you.


Cheers,

	Ross

------------------------------------------------------------------------
Ross Moore                                       ross at maths.mq.edu.au
Mathematics Department                           office: E7A-419
Macquarie University                             tel: +61 (0)2 9850 8955
Sydney, Australia  2109                          fax: +61 (0)2 9850 8114
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