Bug #1656581: Point out that external file objects are supposed to be
at position 0. (backport from rev. 53752)
diff --git a/Doc/lib/libtarfile.tex b/Doc/lib/libtarfile.tex
index ca6e65a..b33ac60 100644
--- a/Doc/lib/libtarfile.tex
+++ b/Doc/lib/libtarfile.tex
@@ -48,8 +48,8 @@
avoid this. If a compression method is not supported,
\exception{CompressionError} is raised.
- If \var{fileobj} is specified, it is used as an alternative to
- a file object opened for \var{name}.
+ If \var{fileobj} is specified, it is used as an alternative to a file
+ object opened for \var{name}. It is supposed to be at position 0.
For special purposes, there is a second format for \var{mode}:
\code{'filemode|[compression]'}. \function{open()} will return a
@@ -155,6 +155,7 @@
If \var{fileobj} is given, it is used for reading or writing data.
If it can be determined, \var{mode} is overridden by \var{fileobj}'s mode.
+ \var{fileobj} will be used from position 0.
\begin{notice}
\var{fileobj} is not closed, when \class{TarFile} is closed.
\end{notice}