Patch #1581073: add a flag to textwrap that prevents the dropping of
whitespace while wrapping.
diff --git a/Doc/lib/libtextwrap.tex b/Doc/lib/libtextwrap.tex
index 38f9b03..fcf339d 100644
--- a/Doc/lib/libtextwrap.tex
+++ b/Doc/lib/libtextwrap.tex
@@ -115,6 +115,13 @@
expansion.}
\end{memberdesc}
+\begin{memberdesc}{drop_whitespace}
+(default: \code{True}) If true, whitespace that, after wrapping, happens
+to end up at the beginning or end of a line is dropped (leading whitespace
+in the first line is always preserved, though).
+\versionadded[Whitespace was always dropped in earlier versions]{2.6}
+\end{memberdesc}
+
\begin{memberdesc}{initial_indent}
(default: \code{''}) String that will be prepended to the first line
of wrapped output. Counts towards the length of the first line.