[xml/sgml-pkgs] Bug#1055673: libxml2: changes semantic on DTD reformatting

[Thorsten Glaser]

Package: libxml2
Version: 2.9.10+dfsg-6.7+deb11u4
Severity: minor
X-Debbugs-Cc: tg at mirbsd.de
Control: affects -1 xmlstarlet

$ cat test.xml 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [
<!ELEMENT foo (bar+)>
<!ELEMENT bar (#PCDATA)>
]>
<foo>
 <bar>baz</bar>
</foo>
$ xmlstarlet fo test.xml 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [
<!ELEMENT foo (bar)+>
<!ELEMENT bar (#PCDATA)>
]>
<foo>
  <bar>baz</bar>
</foo>
$ xmllint test.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [
<!ELEMENT foo (bar)+>
<!ELEMENT bar (#PCDATA)>
]>
<foo>
 <bar>baz</bar>
</foo>

libxml2 here changes the (bar+) to (bar)+ which is
syntactically identical but not semantically (it’s
still a sequence of bar+ and might be extended, in
the future, to (bar+, baz*) or something).




-- System Information:
Debian Release: 11.8
  APT prefers oldstable-updates
  APT policy: (500, 'oldstable-updates'), (500, 'oldstable-security'), (500, 'oldstable-proposed-updates'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-24-amd64 (SMP w/2 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C, LC_CTYPE=C (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)

Versions of packages libxml2 depends on:
ii  libc6     2.31-13+deb11u7
ii  libicu67  67.1-7
ii  liblzma5  5.2.5-2.1~deb11u1
ii  zlib1g    1:1.2.11.dfsg-2+deb11u2

libxml2 recommends no packages.

libxml2 suggests no packages.

-- no debconf information