Re: possible encoding issues with libxml2 functions

>
> xpath-bugfix.patch affected only xml values containing an xml declaration
> with
> "encoding" attribute. In UTF8 databases, this latest proposal
> (xpath-parsing-error-fix.patch) is equivalent to xpath-bugfix.patch. In
> non-UTF8 databases, xpath-parsing-error-fix.patch affects all xml values
> containing non-ASCII data. In a LATIN1 database, the following works today
> but breaks under your latest proposal:
>
> SELECT xpath('text()', ('<x>' || convert_from('\xc2b0', 'LATIN1') ||
> '</x>')::xml);
>
> It's acceptable to break that, since the documentation explicitly disclaims
> support for it. xpath-bugfix.patch breaks different use cases, which are
> likewise acceptable to break. See my 2017-08-08 review for details.
>

The fact so this code is working shows so a universe is pretty dangerous
place :)