> and this command copied all the attributes except the attributes starts 
> with "xmlns:".  This is okay.

yes, namespace declarations are not attributes to XSLT.

> But nothing is copied if i use this.
> 
> <xsl:copy-of select="namespace::*"/>


Then either there is a bug in your system (which are you using) or there
is a bug in your stylesheet (post a 3 line input file and complete, small,
stylesheet that shows the problem. Without seeing more, we can't say.

David


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