Makron-Zeichen (Längestrich, Überstrich oder Querstrich)
Nach [Wikipedia][1] reicht für Makrons \=a. Wo liegt mein Fehler?
\begin{filecontents}{\jobname.bib}
@Book{AhsanIslahi1976,
Title = {The Islamic State},
Address = {K.\,A.},
Author = {Am\=\in Ahsan Isl\=ah\=\i},
Gender = {sm},
Keywords = {secondary},
Shortauthor = {Ahsan Isl\=ah\=\i},
Shorttitle = {Islamic State},
Subtitle = {An English Translation of Isl\=am\=\i Riy\=asat by Am\=\i Ahsan Isl\=ah\=\i},
Year = {1976},
Timestamp = {2017.06.05}
}
\end{filecontents}
\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{hyperref}
\usepackage[style=footnote-dw,backend=biber]{biblatex}
\addbibresource{\jobname.bib}
\nocite{*}
\begin{document}
\printbibliography
\end{document}
[1]: https://de.wikipedia.org/wiki/Makron