[ docbook-Bugs-2043091 ] firstterm inside ulink leads to incorrect HTML output

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Bugs item #2043091, was opened at 2008-08-08 13:53
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Category: XSL
Group: output: HTML
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Joachim Ziegler (quadruplex)
Assigned to: Nobody/Anonymous (nobody)
Summary: firstterm inside ulink leads to incorrect HTML output

Initial Comment:
The bug I'll describe can be observed on.

http://www.leda-tutorial.org/en/unofficial/pr01s01.html

where you can see that everything is printed in bold, though it should not.

I use Saxon 6.5.3 and the XSL stylesheets 1.69.0. (The error also appears with Saxon 6.5.3 and the newest 1.74.0)

My input document (which validates against the XML DTD 4.5) goes like this:

 <para><ulink url="&alsourl;/enleda.htm"><firstterm
      id="def.LEDA"><acronym>LEDA</acronym></firstterm></ulink>  is the C++
      <glossterm>Library of Efficient Data Types and
      Algorithms</glossterm>, which was developed at the...


The output is the following (I have inserted line breaks by hand to make the error clear). Note that there is no matching </em> for the second <em> (the corresponding end tag comes much later in the document):

<p>

<a href="http://www.algorithmic-solutions.de/enleda.htm" target="_top"><em class="firstterm"></em></a>

<em class="firstterm"><a id="def.LEDA"></a>

<a ref="http://www.algorithmic-solutions.de/enleda.htm" target="_top"><em class="firstterm"><span class="acronym">LEDA</span></em></a>  

is the C++

<em class="glossterm">Library of Efficient Data Types and Algorithms</em>, which was developed at the 


The error does not occur when I delete the <firstterm> in the <ulink>. It has nothing to do with the <acronym> (I have tried it).

The same bug can be observed in the middle of the next page:

http://www.leda-tutorial.org/en/unofficial/pr01s02.html

Greetings,
Joachim


PS: xmllint'ing the whole file says:

$ xmllint --html --noout pr01s01.html
pr01s01.html:14: element a: validity error : ID d0e94 already defined
p><p><em class="firstterm"><em class="firstterm"><a id="d0e94" class="indexterm"
                                                                               ^
pr01s01.html:18: element a: validity error : ID d0e94 already defined
p><p><em class="firstterm"><em class="firstterm"><a id="d0e94" class="indexterm"
                                                                               ^
pr01s01.html:23: element a: validity error : ID d0e94 already defined
p><p><em class="firstterm"><em class="firstterm"><a id="d0e94" class="indexterm"
                                                                               ^
pr01s01.html:24: element a: validity error : ID d0e94 already defined
p><p><em class="firstterm"><em class="firstterm"><a id="d0e94" class="indexterm"


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