[xslt] scope of global param, version 1.1.15 of libxslt (libxml 2.6.21)

[Stephane Mottelet <stephane mottelet utc fr>]

Stephane Mottelet wrote:
> Ok I upgraded to 1.1.15, and now I have new xsl bugs. I have
> an xsl stylesheet with a global parameter
>
> <xsl:param name="lang"/>
>
> which is fed by a --stringparam lang french in the
> xsltproc options
>
> The param is correctly seen there :
>
>  <xsl:template match="/">
>     <xsl:message><xsl:value-of select="$lang"/></xsl:message>
>  <xsl:apply-templates/>
>
> but not here any more (was ok in 1.1.7) :
>
>   <xsl:template match="title[(@lang=$lang) or not(@lang)]">
>     <comment>
>       <xsl:value-of select="."/>
>     </comment>
>   </xsl:template>
>
> XPath error : Undefined variable
> (@lang=$lang) or not(@lang)
>             ^
> compilation error: file /home/mottelet/XMLlab//xsl/simulation.xsl line 
> 211 element template
> Failed to compile predicate
>
> Did something change in the scope of global parameters ?
>
> S.

Ok, for this scope problem, here is all the files to produce the problem

Stylesheet (simulation.xsl) : -----------------

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
version="1.0">

  <xsl:param name="lang"/>

  <xsl:output method="xml" indent="no" encoding="ISO-8859-1"/>

  <xsl:template match="/">
    <xsl:apply-templates/>
  </xsl:template>

  <xsl:template match="simulation">
        <xsl:apply-templates/>
  </xsl:template>

  <xsl:template match="title[(@lang=$lang) or not(@lang)]" mode="script">
    <comment>
      <xsl:value-of select="."/>
    </comment>
  </xsl:template>

</xsl:stylesheet>

File to process (interp.xml) : ----------------

?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE simulation PUBLIC "-//UTC//DTD XMLlab V1.4//FR" 
"http://www.xmllab.org/dtd/1.4/simulation.dtd";>
<simulation>
      <title lang="french">Points à interpoler</title>
</simulation>

Command line : -----------------------------

> xsltproc --stringparam lang french simulation.xsl interp.xml
XPath error : Undefined variable
(@lang=$lang) or not(@lang)
            ^
compilation error: file simulation.xsl line 16 element template
Failed to compile predicate


Seems there is really a problem ?

S.





--
e-mail : Stephane Mottelet utc fr
www : http://www.dma.utc.fr/~mottelet