Comment # 3 on bug 942813 from Dominique Leuenberger

(In reply to Atri Bhattacharya from comment #2)
> (In reply to Dominique Leuenberger from comment #1)
> > what does
> > 
> > xdg-mime query default text/plain
> > 
> 
> writer.desktop

ok, so writer IS indeed set as the default.. now let's chase down the why :)

do you have gio-branding-openSUSE installed?

The 2nd latest entry in the changelog should be:

>* Mon Nov 03 2014 badshah400@gmail.com
>- Gedit desktop file got renamed to org.gnome.gedit.desktop,
>  update gnome_defaults.conf accordingly (boo#904010).

gedit is installed? (rpm -q gedit)

Does the xdg-mime command give the same result when started as 'root' ? (su -)

Does running (As root)
> /usr/bin/update-mime-database "/usr/share/mime"

change anything? (This could mean that during install, when installing
gio-branding-openSUSE, the updaye-mime-database binary could have been missing
for example... /var/log/zypp or /var/log/YaST might have pointers to that)