The easiest way to do this is in the Reports Tab. Select the Contents Report and the Tabulated - Tab Separated style and then you pick which columns you want to include.
However, to answer your specific question, this XSL should do the trick.
<?xml version="1.0"?>
<!-- Tab separated Transform
Copyright (C) Mythicsoft Ltd 2014. All rights reserved.
Produces output that for each found line contains the path, file name, and text
separated by the tab (0x09) character.
-->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rslt="http://www.mythicsoft.com/FileLocator_16Aug2005"
version="1.0">
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:apply-templates select="//rslt:line"/>
</xsl:template>
<xsl:template match="rslt:line">
<xsl:value-of select="../../rslt:path"/>
<xsl:text>	</xsl:text>
<xsl:value-of select="../../rslt:name"/>
<xsl:text>	</xsl:text>
<xsl:value-of select="rslt:text"/>
<xsl:text>	</xsl:text>
<xsl:text> </xsl:text>
</xsl:template>
</xsl:stylesheet>