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As soon as one uses biblatex with biber as backend and uniquename=true enabled, the test \ifnamesequal{editor}{author} inside the bbx-file (here: authortitle-dw.bbx) won't expand to true even if the fields {editor} and {author} are identical in the bib-file. This is because uniquename adds a value to the namelist labelname (= author) so that \ifnamesequal{editor}{author} expands to false in any case. Compare following example with uniquename=true and uniquename=false. In the first case, the output of the editor is "Zeller" and in the second case "ders". Is there a way to get "ders" even with uniquename=true?

\documentclass[a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[ngerman]{babel}\usepackage[style=authortitle-dw,uniquename=true,backend=biber]{biblatex}

\begin{filecontents}{\jobname.bib}
@incollection{Zeller1988,
Address = {G{\"o}ttingen},
Author = {Dieter Zeller},
Booktitle = {Menschwerdung Gottes -- Verg{\"o}ttlichung von Menschen},
Editor = {Dieter Zeller},
Number = {7},
Pages = {141-176},
Series = {NTOA},
Shorttitle = {Menschwerdung},
Title = {Die Menschwerdung des Sohnes Gottes im Neuen Testament und die antike Religionsgeschichte},
Year = {1988}}
\end{filecontents}

\bibliography{\jobname}

\begin{document}
\cite[]{Zeller1988}

\printbibliography
\end{document}
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1 Answer

This is a bug in biblatex which has already been reported and should be fixed with the next release which is due soon.

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