[xsl] Noobie: normalize <b><a>...</a></b> to <a><b>...</b></a>

[Kenneth Reid Beesley <krbeesley@xxxxxxxxx>]

I'm converting a non-XML data-dump into XML, and the document contains  
examples of both

<a><b>...</b></a>

and

<b><a>...</a></b>

which (in this document) are equivalent.  I'd like to use XSLT to  
convert all examples of the latter to the former, with the following  
caveats:

1.  <b> can contain mixed text, in which case nothing should be changed.
2.  <b><a>...</a></b> should be changed to <a><b>...</b></a> only if  
the <a>...</a> element is the unique child node of <b>...</b>

How can I do this?

Thanks,

Ken

******************************
Kenneth R. Beesley, D.Phil.
P.O. Box 540475
North Salt Lake, UT
84054  USA