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Bug #4596
closedXML output has empty line between XML declaration and root element
Start date:
2020-06-16
Due date:
% Done:
100%
Estimated time:
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Description
I have found another oddity with Saxon-JS 2's serializer, at least in some case it outputs an empty line between the XML declaration and the root element.
Example XSLT is:
<?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="#all" version="3.0">
<xsl:param name="max" as="xs:integer" select="10"/>
<xsl:mode on-no-match="shallow-copy" use-accumulators="#all" streamable="yes"/>
<xsl:output method="xml" indent="yes"/>
<xsl:accumulator name="window" as="item()*" initial-value="()" streamable="yes">
<xsl:accumulator-rule match="root" select="(0, true())"/>
<xsl:accumulator-rule match="root/row"
select="
let $val := xs:integer(@val),
$sum := $value[1],
$window-start := $value[2],
$current-sum := $sum + $val
return
if ($current-sum gt $max)
then
($val, true())
else
($current-sum, false())"
/>
</xsl:accumulator>
<xsl:template match="root">
<xsl:copy>
<xsl:for-each-group select="row"
group-starting-with="*[accumulator-before('window')[2]]">
<grouped>
<xsl:apply-templates select="current-group()"/>
</grouped>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Example XML is:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<row id="AAA" val="2"/>
<row id="BBB" val="3"/>
<row id="CCC" val="1"/>
<row id="DDD" val="4"/>
<row id="EEE" val="6"/>
<row id="FFF" val="3"/>
<row id="GGG" val="6"/>
<row id="HHH" val="8"/>
<row id="III" val="3"/>
<row id="JJJ" val="4"/>
<row id="KKK" val="2"/>
<row id="LLL" val="1"/>
</root>
Running this with xslt3
on Windows 10 and Node 12 gives
PS C:\Users\SomePath\group-adjacent> xslt3 -s:.\adjacent-sum-input1.xml -xsl:.\accumulate-group-starting-with1.xsl
<?xml version="1.0" encoding="UTF-8"?>
<root>
<grouped>
<row id="AAA" val="2"/>
<row id="BBB" val="3"/>
<row id="CCC" val="1"/>
<row id="DDD" val="4"/>
</grouped>
<grouped>
<row id="EEE" val="6"/>
<row id="FFF" val="3"/>
</grouped>
<grouped>
<row id="GGG" val="6"/>
</grouped>
<grouped>
<row id="HHH" val="8"/>
</grouped>
<grouped>
<row id="III" val="3"/>
<row id="JJJ" val="4"/>
<row id="KKK" val="2"/>
<row id="LLL" val="1"/>
</grouped>
</root>
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