I wondered about that as well a while back.
The manpage specifies the exit statuses below. The document is well-formed
and shouldn't fail to parse because the namespace-prefix separating ':' was
always allowed as part of a tag name iirc.
There's no schema, so it's not a schema validation issue.
There's no exit status that would reasonably be returned, though stderr
says it's a namespace 'error', so "0 No error" also doesn't seem completely
correct.
However, I've seen multiple applications that rely on xmllint *not* exiting
other-than-0 due to missing namespace prefixes.
Could possibly double-pass it with xmllint file 2>&1 > /dev/null | grep
namespace.error
DIAGNOSTICS
xmllint return codes provide information that can be used when
calling it from scripts.
0
No error
1
Unclassified
2
Error in DTD
3
Validation error
4
Validation error
5
Error in schema compilation
6
Error writing output
7
Error in pattern (generated when --pattern option is used)
8
Error in Reader registration (generated when --chkregister
option is used)
9
Out of memory error
On Sun, Jun 20, 2021 at 11:59 PM Christian Weiske via xml <xml@gnome.org>
wrote:
> Hello,
>
>
> I'm using xmllint to validate files automatically during CI runs, and
> now an error was not catched.
>
> The xml file used a namespace prefix that was not defined. xmllint
> noticed that, but still gave an exit code of 0:
>
> > $ xmllint --noout text.xml; echo $?
> > text.xml:66: namespace error : Namespace prefix v on tag is not defined
> > <v:tag/>
> > ^
> > 0
>
> Is there a way to make xmllint use a non-0 exit code in this case?
>
> (Happens on Ubuntu Linux 20.04:
> xmllint: using libxml version 20912
> compiled with: Threads Tree Output Push Reader Patterns Writer SAXv1
> FTP HTTP DTDValid HTML Legacy C14N Catalog XPath XPointer XInclude Iconv
> ICU ISO8859X Unicode Regexps Automata Schemas Schematron Modules Debug
> Zlib Lzma
> )
>
> --
> Regards/Mit freundlichen Grüßen
> Christian Weiske
>
> -=≡ Geeking around in the name of science since 1982 ≡=-
> _______________________________________________
> xml mailing list, project page http://xmlsoft.org/
> xml@gnome.org
> https://mail.gnome.org/mailman/listinfo/xml
>
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