[xml/sgml-pkgs] Bug#993638: Bug#993638: libxml2: XHTML 1.0 validation is broken

Sun Sep 19 18:15:54 BST 2021

Control: tag -1 unreproducible

On Sat, Sep 04, 2021 at 03:40:17AM +0200, Vincent Lefevre wrote:
> After the upgrade to 2.9.12+dfsg-3, XHTML 1.0 validation is broken.
> There was no such issue with 2.9.10+dfsg-6.7.

Actually, I can't reproduce it.
And, honestly, I think that if really didn't work I would have heard
quite a lot of noise by now.

> $ xmllint --noout --loaddtd --valid test.html
> error : xmlAddEntity: invalid redeclaration of predefined entity
> error : xmlAddEntity: invalid redeclaration of predefined entity

I can never manage to download DTDs from w3.org (how could you?!), so,
taking your testcase and a copy of the same DTD:

mattia at warren /tmp/tmp/xml % l
total 68
-rw-r--r-- 1 mattia mattia   260 Sep 19 19:02 test.html
-rw-r--r-- 1 mattia mattia 26450 Sep  6  2014 xhtml1-strict.dtd
-rw-r--r-- 1 mattia mattia 12055 Sep  6  2014 xhtml-lat1.ent
-rw-r--r-- 1 mattia mattia  4293 Sep  6  2014 xhtml-special.ent
-rw-r--r-- 1 mattia mattia 14167 Sep  6  2014 xhtml-symbol.ent
mattia at warren /tmp/tmp/xml % cat test.html
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>title</title></head>
<body><p>text</p></body>
</html>
mattia at warren /tmp/tmp/xml % xmllint --dtdvalid xhtml1-strict.dtd --nonet --noout test.html
I/O error : Attempt to load network entity http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
test.html:2: warning: failed to load external entity "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
                                                                               ^
mattia at warren /tmp/tmp/xml %

which looks good to me.

This is with the current 2.9.12+dfsg-4.

-- 
regards,
                        Mattia Rizzolo

GPG Key: 66AE 2B4A FCCF 3F52 DA18  4D18 4B04 3FCD B944 4540      .''`.
More about me:  https://mapreri.org                             : :'  :
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Debian QA page: https://qa.debian.org/developer.php?login=mattia  `-
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