<tests>
<testcases id="1">
<command value="copy">
<files value="$$path$$/1.txt $$path$$/2.txt" />
</testcases>

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
<xsl:param name="path">##MISSING##</xsl:param>
 <xsl:output method="xml" indent="yes" encoding="utf-8"/>

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>
<xsl:template match="@*">
<xsl:param name="find">$$project$$</xsl:param>
<xsl:variable name="attribute-name" select="name()"/>
    <xsl:choose>
      <xsl:when test="contains(., $find)">
        <xsl:attribute name="{$attribute-name}">
          <xsl:value-of select="concat(substring-before(., $find), $path, substring-after(., $find))"/>
        </xsl:attribute>
      </xsl:when>
<xsl:otherwise>
        <xsl:copy>
          <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

<tests>
<testcases id="1">
<command value="copy">
<files value="E:/test/1.txt $$path$$/2.txt" />
</testcases>