New failure in httpd units tests (xml related)

Tue, 06 May 2025 06:09:41 -0700 

Hi there,

I observed a new failure in httpd units tests, namely in t/apache/pr64339.t:

# Failed test 12 in t/apache/pr64339.t at line 45 fail #4

# testing : content test for /doc.isohtml
# expected: '<html><body><p>fóó
# </p></body></html>'
# received: '<html><body>fóó
# </body></html>'
not ok 12
Note, that "<p>" and "</p>" are missing from the result. The test class contains the following test definition:
['/doc.isohtml', "text/html;charset=utf-8", "<html><body><p>fóó\n</p></body></html>" ],
The request gets send to "/modules/xml2enc/front" and the requested file only contains the three UTF characters similar to "foo". The conversion to HTML seems to be done by mod_xml2enc and/or mod_proxy_html. The test config contains: 

#
# t/apache/pr64339.t test configuration
#
<IfModule mod_xml2enc.c>
   <IfModule mod_proxy_html.c>
      <IfModule mod_proxy.c>
         Alias /modules/xml2enc/back @SERVERROOT@/htdocs/modules/xml2enc
         <Location /modules/xml2enc/back>
             AddType application/foo+xml fooxml
             AddType application/notreallyxml notxml
             AddType application/xml xml
             AddType text/html isohtml
             AddCharset ISO-8859-1 .isohtml
             AddCharset UTF-8 .xml
             AddCharset UTF-8 .fooxml
         </Location>
         <Location /modules/xml2enc/front>
             ProxyHTMLEnable on
             # mod_proxy_html needs some configuration.
             ProxyHTMLURLMap / /blah
             ProxyHTMLLinks a href
             ProxyPass http://@SERVERNAME@:@PORT@/modules/xml2enc/back
         </Location>
      </IfModule>
   </IfModule>
</IfModule>
The failure happens for 2.4.63 builds, although I didn't notice it during the release vote. It is due to my update of libxml2 from 2.13.5 to 2.14.2. I can reproduce the change with the accompanying xmllint: 


.../2.14.2/xmllint --html doc.isohtml
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd";> 
<html><body>f&oacute;&oacute;
</body></html>

.../2.13.5/xmllint --html doc.isohtml
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd";> 
<html><body><p>f&oacute;&oacute;
</p></body></html>
We might need to make the test more tolerant wrt. the generated paragraph tags or use a different type of input file. 

Best regards,

Rainer

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