bug#23440: 25.1.50; xml.el parses default namespace incorrectly

[Eric Abrahamsen]

Apparently xml.el isn't doing quite the right thing when parsing xml
default namespaces. With the following text:

<multistatus xmlns="DAV:">
</multistatus>

M-: (xml-parse-region nil nil nil nil 'symbol-qnames)

Should return:

((DAV:multistatus ((... . "DAV:"))

But actually returns:

((multistatus ((http://www\.w3\.org/2000/xmlns/xmlns . "DAV:"))

A bit more background:

http://article.gmane.org/gmane.emacs.devel/203476/


In GNU Emacs 25.1.50.20 (i686-pc-linux-gnu, GTK+ Version 3.20.3)
 of 2016-05-01 built on pellet
Windowing system distributor 'The X.Org Foundation', version 11.0.11803000
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 LIBSYSTEMD