Re: DOCBOOK-APPS: XSL implementation of DBTeXMath

[Rafael 'Dido' Sevilla <sevillar at team dot ph dot inter dot net>]

On Mon, Jan 28, 2002 at 11:33:31PM -0500, Allin Cottrell wrote:
> The xsl version stumbles on some material that is OK in the sgml
> version.  For example:
> 

Of course it stumbles, because what you've presented below is completely
invalid XML. :)

>         <informalequation>
>         <alt>
>          \begin{eqnarray*}
>           y_t &=& \alpha + \beta(1/x_t) + \epsilon_t\\
                ^^^
In XML, all entities are introduced by an '&', and this does not form a
valid XML entity, which is why...

> This is processed fine by jade, but using saxon and xsl I get the
> error:
> 
>   Error on line 215 column 10 of
>   file:/home/allin/stats/esl/gretl/doc/xml/appendices.xml:
>     Error reported by XML parser: name expected (found "=")
>   Transformation failed: Run-time errors were reported
> 
> Line 215 contains the first occurrence of "&=&".  Anyone know of a
> workaround for this?
> 

Perhaps you can try replacing the literal & by the entity for a literal
&, i.e. &amp;, or perhaps enclose your entire TeX equation in a CDATA
section:

<informalequation>
<alt>
<![CDATA[
\begin{eqnarray*}
y_t &=& \alpha + \beta(1/x_t) + \epsilon_t\\
y_t &=& \alpha + \beta x_t + \gamma x^2_t + \epsilon_t\\
y_t &=& \alpha + \beta \log x_t + \epsilon_t\\
\log y_t &=& \alpha + \beta \log x_t + \epsilon_t
\end{eqnarray*}
</alt>
<graphic fileref="figures/nonlin.png"/>
]]>
</informalequation>

Provided of course, that ]]> never appears inside your equation.

-- 
Rafael R. Sevilla <sevillar@team.ph.inter.net>   +63(2)   8177746 ext. 8311
Programmer, Inter.Net Philippines                +63(917) 4458925
http://dido.ph.inter.net/                        OpenPGP Key ID: 0x5CDA17D8
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