[xml] Encoding

[spinmar interfree it]

Hi all,
I'm seeing a strange error which I can't understand.
I'm writing a C cgi which use libxml2 and libxslt. 
In my xsl I use exslt and then before calling xsltApplyStylesheet, I call
xmlSubstituteEntitiesDefault(1);
exsltRegisterAll();
The exslt function I use is str:encode-uri, because I have some urls which have a parameter which is a url 
too. 
My cgi does:

xmlSubstituteEntitiesDefault(1);
exsltRegisterAll();
xsltParseStylesheetFile
xsltApplyStylesheet
xsltSaveResultToString

and then
printf("Content-Type: text/html; charset=iso-8859-1\n\n");
printf(bufptr);

If I print to stderr the result of trasformation the content of url is ok. For example:
<a 
href="http://server/cgi-bin/x?idm=1&amp;ids=13&amp;tmdg=1&amp;uc=http%3A%2F%2Fserver%2Fcgi-bin%2Ftest_content";>Link</a>

but when the page is displayed in the browser the url is:

<a 
href="http://server/cgi-bin/x?idm=1&amp;ids=13&amp;tmdg=1&amp;uc=http0X1.6ACE80804AA36P-89527.686218-1.997822server0.000000cgi-bin0.000000test_content";>Link</a>

As if the print or browser change the content of href. The behaviour is the same for explorer and firefox.

Any hints or idea?

Thanks for the help

--Marco


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