Re: [xsl] sorting, xslt 2.0

["Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

There's another option which I forgot about because I tend to prefer one of
the others: compute the sort key in the body of xsl:sort:

>> <xsl:for-each select="term">
>>  <xsl:sort>
>>   <xsl:choose>
>>     <xsl:when test="fr/@sort">
>>        <xsl:value-of select="fr/@sort"/>
>>     </xsl:when>
>>     <xsl:otherwise>
>>        <xsl:value-of select="(lower-case(substring(fr,1,1)))"/>
>>     </xsl:otherwise>
>>   </xsl:choose>
>> </xsl:sort>

> On 16 Mar 2021, at 16:24, Michael Kay mike@xxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> As David C and Martin suggest, write the sort key computation as a single
XPath expression if you can.
>
> In the rare cases where you can't, call out to a function: compute the sort
key in a separate xsl:function, and call the function in xsl:sort/@select.
>
> Michael Kay
> Saxonica
>
>> On 16 Mar 2021, at 16:08, Dave Pawson dave.pawson@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>> xml
>>
>> <term>
>> <fr sort="">sourire</fr>
>> ...
>> </term>
>>
>> context is term
>> I want to sort on fr/@sort
>> or (if empty)
>> <xsl:value-of select="(lower-case(substring(fr,1,1)))"/>
>>
>> error XTSE0010 Within xsl:for-each, xsl:sort elements must come before
>> other instructions
>>
>> <xsl:for-each select="term">
>>  <xsl:variable name='sort'>
>>   <xsl:choose>
>>     <xsl:when test="fr/@sort">
>> <xsl:value-of select="fr/@sort"/>
>>     </xsl:when>
>>     <xsl:otherwise>
>> <xsl:value-of select="(lower-case(substring(fr,1,1)))"/>
>> </xsl:otherwise>
>>   </xsl:choose>
>>   </xsl:variable>
>>
>>
>> <xsl:sort select="$sort"/>
>>
>>
>> Any suggestions for a workaround please?
>>
>> TiA
>>
>>
>> --
>> Dave Pawson
>> XSLT XSL-FO FAQ.
>> Docbook FAQ.