The rule in the spec is that a principal result document is written if either
(a) there is no secondary result document, or (b) the raw result of the
initial template is a non-empty sequence. My guess would be that in your case
the raw result contains some whitespace text nodes.

I usually avoid the problem by sending the principal output to dummy.xml and
ignoring it: that's easier than worrying about where the pesky text nodes are
coming from.

Michael Kay
Saxonica


> On 21 Dec 2016, at 14:14, Mark Wilson mark@xxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> I build one of my websites (www.cpslib.org) using a Windows batch file that
has 45 distinct steps (I have never learned XProc and am 77 years old so maybe
never will). Even though I am using <xsl:result-document> in the style sheet,
the characters
>    <?xml version="1.0" encoding="UTF-8"?>
> appear at stdout.  The document itself is written to file as specified in
result-document.
>
> I have greatly simplified the batch file, XML document, and the stylesheet,
but the stdout output still appears when I run the batch file. I have several
other stylesheets in the batch file that use result-document. Some exhibit
this behavior, some do not.
>
> I am unsure if this is an artifact of Saxon 97, the batch file process ,or
my code.  Any help?
> Mark
>
> Batch file:
> set SAXON_HOME=C:\saxon97
> set SAXON_JAR=%SAXON_HOME%\saxon9he.jar
> java -jar c:\saxon97\saxon9he.jar   work\text.xml xslt\071a-get-words.xsl
>
> XML document (text.xml)
> <?xml version="1.0" encoding="UTF-8"?>
> <List>
>   <Set lang="latin">
>      <Text data="Lynx lynx" pofis-number="817" latin-original="Lynx lynx"
>            text-location="coupon"
>            domain="cr"
>            year="2014"/>
>   </Set>
> </List>
>
> XSLT stylesheet
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs"
version="2.0">
>
>  <xsl:output indent="yes"/>
>
>  <xsl:template match="List">
>    <xsl:apply-templates/>
>  </xsl:template>
>
>  <xsl:template match="Set">
>    <xsl:if test="@lang eq 'latin'">
>      <xsl:result-document href="work/latin-words.xml">
>        <List>
>          <xsl:apply-templates/>
>        </List>
>      </xsl:result-document>
>    </xsl:if>
>
>  </xsl:template>
>
>  <xsl:template match="Text">
>    <xsl:variable name="data" select="@data"/>
>    <xsl:variable name="eng" select="@eng-original"/>
>    <xsl:variable name="czech" select="@czech-original"/>
>    <xsl:variable name="latin" select="@latin-original"/>
>    <!-- Is the text on the stamp or elsewhere? -->
>    <xsl:variable name="type" select="if(@text-location) then @text-location
else 'stamp'"/>
>    <xsl:variable name="domain" select="@domain"/>
>    <xsl:variable name="year" select="@year"/>
>    <xsl:variable name="pofis-prefix" select="@pofis-prefix"/>
>    <xsl:variable name="pofis-number" select="@pofis-number"/>
>    <xsl:variable name="pofis-suffix" select="@pofis-suffix"/>
>
>    <!--walk over each distinct value setting that value as the current
node-->
>    <xsl:choose>
>
>      <!-- Latin word list  -->
>      <xsl:when test="parent::Set/@lang eq 'latin'">
>        <xsl:for-each select="distinct-values(tokenize(lower-case(@data),
'\s+'))">
>          <xsl:variable name="initial-letter" select="upper-case(substring(.,
1, 1))"/>
>          <xsl:variable name="sort-word"
>            select="concat($initial-letter, substring(., 2, string-length(.)
-1))"/>
>          <xsl:choose>
>            <!-- Discard numbers -->
>            <xsl:when test="number(substring-before(., '.'))"/>
>            <xsl:otherwise>
>              <Word word="{.}" sort-word="{$sort-word}" latin="{$latin}"
domain="{$domain}"
>                year="{$year}" pofis-prefix="{$pofis-prefix}"
pofis-number="{$pofis-number}"
>                pofis-suffix="{$pofis-suffix}" type="{$type}"/>
>            </xsl:otherwise>
>          </xsl:choose>
>        </xsl:for-each>
>      </xsl:when>
>    </xsl:choose>
>  </xsl:template>
>
> </xsl:stylesheet>