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% This file presents the 'authoryear-comp' style
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\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[american]{babel}
\usepackage{csquotes}
\usepackage[style=authoryear-comp,backend=biber]{biblatex}
\usepackage{hyperref}
\addbibresource{biblatex-examples.bib}
% Some generic settings.
\newcommand{\cmd}[1]{\texttt{\textbackslash #1}}
\setlength{\parindent}{0pt}
\newenvironment{bibsample}
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\begin{document}

\section*{The \texttt{authoryear-comp} style}

This style is a compact version of the \texttt{authoryear} style
which prints the author only once if subsequent references passed to
a single citation command share the same author. If they share the
same year as well, the year is also printed only once. This style
will implicitly enable the \texttt{sortcites} package option at load
time.

\subsection*{Additional package options}

\subsubsection*{The \texttt{dashed} option}

By default, this style replaces recurrent authors/editors in the
bibliography by a dash so that items by the same author or editor
are visually grouped. This feature is controlled by the package
option \texttt{dashed}. Setting \texttt{dashed=false} in the
preamble will disable this feature. The default setting is
\texttt{dashed=true}.

\subsubsection*{The \texttt{mergedate} option}

Since this style prints the date label after the author/editor in the
bibliography, there are effectively two dates in the bibliography:
the full date specification (e.g., \enquote{2001}, \enquote{June
2006}, \enquote{5th~Jan. 2008}, whose format is controlled by the
\texttt{date} option) and the date label (e.g., \enquote{2006a},
whose format is controlled with the \texttt{labeldate} option),
as found in citations. The \texttt{mergedate} option controls whether
or not date specifications are merged with the date label.
This option is best explained by example. Note that
it only affects the bibliography. Citations use the date label only.

\begin{bibsample}
\item Doe 2000
\item Doe 2003a
\item Doe 2003b
\item Doe 2006a
\item Doe 2006b
\item Doe 2017
\end{bibsample}

\texttt{mergedate=false} strictly separates the date specification
(following \texttt{date}) from the date label (following \texttt{labeldate}).
The year will always be printed twice:

\begin{bibsample}
\item Doe, John (2000). \emph{Book~1}. Location: Publisher, 2000.
\item Doe, John (2003a). \emph{Book~2}. Location: Publisher, 2003.
\item Doe, John (2003b). \emph{Book~3}. Location: Publisher, 2003.
\item Doe, John (2006a). \enquote{Article~1}. In: \emph{Monthly Journal} 25.6
(June~2006), pp.~70--85.
\item Doe, John (2006b). \enquote{Article~2}. In: \emph{Quarterly Journal} 14.3
(Fall~2006), pp.~5--25.
\item Doe, John (2017). \emph{Webpage}. 7th Aug. 2017.
\end{bibsample}

\texttt{mergedate=minimum} omits the date whenever the full date
and the date label have exactly the same precision (date-time granularity).

\begin{bibsample}
\item Doe, John (2000). \emph{Book~1}. Location: Publisher.
\item Doe, John (2003a). \emph{Book~2}. Location: Publisher, 2003.
\item Doe, John (2003b). \emph{Book~3}. Location: Publisher, 2003.
\item Doe, John (2006a). \enquote{Article~1}. In: \emph{Monthly Journal} 25.6
(June~2006), pp.~70--85.
\item Doe, John (2006b). \enquote{Article~2}. In: \emph{Quarterly Journal} 14.3
(Fall~2006), pp.~5--25.
\item Doe, John (2017). \emph{Webpage}. 7th Aug. 2017.
\end{bibsample}

\texttt{mergedate=basic} is similar in concept but more economical.
It will also omit the date if it differs from the date label only by
\texttt{extradate}.

\begin{bibsample}
\item Doe, John (2000). \emph{Book~1}. Location: Publisher.
\item Doe, John (2003a). \emph{Book~2}. Location: Publisher.
\item Doe, John (2003b). \emph{Book~3}. Location: Publisher.
\item Doe, John (2006a). \enquote{Article~1}. In: \emph{Monthly Journal} 25.6
(June~2006), pp.~70--85.
\item Doe, John (2006b). \enquote{Article~2}. In: \emph{Quarterly Journal} 14.3
(Fall~2006), pp.~5--25.
\item Doe, John (2017). \emph{Webpage}. 7th Aug. 2017.
\end{bibsample}

\texttt{mergedate=compact} merges all date specifications with the
date labels. The merged date is printed in \texttt{date} format,
not \texttt{labeldate}, even if it is printed in the position of
the date label. The \texttt{issue} field is still treated specially:

\begin{bibsample}
\item Doe, John (2000). \emph{Book~1}. Location: Publisher.
\item Doe, John (2003a). \emph{Book~2}. Location: Publisher.
\item Doe, John (2003b). \emph{Book~3}. Location: Publisher.
\item Doe, John (June 2006a). \enquote{Article~1}. In: \emph{Monthly Journal} 25.6, pp.~70--85.
\item Doe, John (2006b). \enquote{Article~2}. In: \emph{Quarterly Journal} 14.3
(Fall), pp.~5--25.
\item Doe, John (7th Aug. 2017).\emph{Webpage}.
\end{bibsample}

\texttt{mergedate=maximum} strives for maximum compactness.
Like \texttt{mergedate=compact} this option merges the date
into the date label.
Even the \texttt{issue} field is merged with the date label:

\begin{bibsample}
\item Doe, John (2000). \emph{Book~1}. Location: Publisher.
\item Doe, John (2003a). \emph{Book~2}. Location: Publisher.
\item Doe, John (2003b). \emph{Book~3}. Location: Publisher.
\item Doe, John (June 2006a). \enquote{Article~1}. In: \emph{Monthly Journal} 25.6, pp.~70--85.
\item Doe, John (Fall 2006b). \enquote{Article~2}. In: \emph{Quarterly Journal} 14.3, pp.~5--25.
\item Doe, John (7th Aug. 2017).\emph{Webpage}.
\end{bibsample}

\texttt{mergedate=true} is an alias for \texttt{mergedate=compact}.
This is the default setting.

\subsection*{Multiple citations}

\cite{knuth:ct:c,aristotle:physics,knuth:ct:b,aristotle:poetics,aristotle:rhetoric,knuth:ct:d}

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