Gentoo's Bugzilla –
Attachment 607226 Details for
Bug 707026app-text/gnome-doc-utils-0.20.10-r2 - line 611, in merge self.out.write(doc.doc.serialize('utf-8', 1)) UnicodeEncodeError: 'ascii' codec can't encode character '\xe4' in position 687: ordinal not in range(128)