I m trying copy the input as it is to the output using the following XSLT. But an extra linebreak is appearing for the comment.
----------------Input-------------------
<root>
<mapping sourcev ....>
 <keylist>
   ..
 </keylist>
....
-----------------Output--------------------
<root>
<mapping source=...>

  <keylist>
   ..
------------------XSLT-----------------------

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes" media-type="text/xml"/>
   <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>


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Awaiting your response. Thanks in advance

Happy Weekend
Kanchan

When you specify indent="yes" the processor is allowed to add newlines wherever it wants.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference