Re: [xsl] function-available returns false

2008/5/2 Michael Kay <mike(_at_)saxonica(_dot_)com>:

You're right, there's a bug here, previously unreported as far as I can
 tell. A call to function-available() supplying a run-time string is working
 in 6.5.5 only if the string has been interned.

function-available() returns true for the extension functions
implemented in 6.5.5, is it that what you mean here?

 In practice, of course, function-available() is almost always called with a
 string literal as its argument.

The use case here is to get a quick reference which elements or
functions are not (jet) implemented and which extensions are available
in a certain version of an XSLT 1.0 processor (in a particular
browser).

@Andrew:

If you'd tried to produce cut down examples, rather posting > your entire 
transform you would probably would have
spotted that....

It _is_ a cut down version (not enough I agree), but there is nothing wrong:

  <dr:functions show="false">
  <xsl:with-param name="show" select="@show='true'"/>

$show is set to boolean false(),

  <xsl:if test="function-available(string(.))=$show">

so the test returns true() when function-available() returns false()

Regards,

Manfred

 > -----Original Message-----
 > From: Manfred Staudinger 
[mailto:manfred(_dot_)staudinger(_at_)gmail(_dot_)com]
 > Sent: 01 May 2008 18:26
 > To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
 > Subject: Re: [xsl] function-available returns false
 >
 > 2008/5/1 Andrew Welch <andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com>:
 > > On 01/05/2008, Manfred Staudinger
 > <manfred(_dot_)staudinger(_at_)gmail(_dot_)com> wrote:
 > >  > With the stylesheet below Saxon 6.5.5 returns false for  >
 > > function-available for all xslt and xpath functions.
 > >
 > >  >  Any idea?
 > >
 > >  Um... yes:
 > >
 > >  >             <dr:functions show="false">
 > >
 > >  and:
 > >
 > >
 > >  >             <xsl:with-param name="show" select="@show='true'"/>
 > >
 > >  If you'd tried to produce cut down examples, rather posting your
 > > entire transform you would probably would have spotted that....
 > >
 > >  (plus if you were questioning whether function-available() works in
 > >  6.5.5 there are easier ways of finding out!)
 >
 > Sorry for that ...
 > XML:
 > <e>number</e>
 >
 > XSLT:
 > <xsl:stylesheet version="1.0"
 > xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
 > <xsl:template match="/"><xsl:apply-templates/></xsl:template>
 > <xsl:template match="e">
 >         <xsl:copy>
 >                 <xsl:value-of select="function-available(.)"/>
 >         </xsl:copy>
 > </xsl:template>
 > </xsl:stylesheet>
 >
 > Manfred
 >

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