* Correct Sniffer doc to correspond to the implementation.
* Add optional delimiters arg to Sniffer.sniff() which restricts the set of
candidate field delimiters.
diff --git a/Doc/lib/libcsv.tex b/Doc/lib/libcsv.tex
index f30aefe..a287ba8 100644
--- a/Doc/lib/libcsv.tex
+++ b/Doc/lib/libcsv.tex
@@ -152,17 +152,17 @@
\class{reader} or \class{writer} instance.
\end{classdesc*}
-\begin{classdesc}{Sniffer}{\optional{sample=16384}}
-The \class{Sniffer} class is used to deduce the format of a CSV file. The
-optional \var{sample} argument to the constructor specifies the number of
-bytes to use when determining Dialect parameters.
+\begin{classdesc}{Sniffer}{}
+The \class{Sniffer} class is used to deduce the format of a CSV file.
\end{classdesc}
The \class{Sniffer} class provides a single method:
-\begin{methoddesc}{sniff}{fileobj}
-Analyze the next chunk of \var{fileobj} and return a \class{Dialect} subclass
-reflecting the parameters found.
+\begin{methoddesc}{sniff}{sample\optional{,delimiters=None}}
+Analyze the given \var{sample} and return a \class{Dialect} subclass
+reflecting the parameters found. If the optional \var{delimiters} parameter
+is given, it is interpreted as a string containing possible valid delimiter
+characters.
\end{methoddesc}
\begin{methoddesc}{has_header}{sample}