Document actual behavior of splitext().
diff --git a/Doc/libppath.tex b/Doc/libppath.tex
index 5c6bf77..d43d3e1 100644
--- a/Doc/libppath.tex
+++ b/Doc/libppath.tex
@@ -125,8 +125,8 @@
\begin{funcdesc}{splitext}{p}
Split the pathname \var{p} in a pair \code{(\var{root}, \var{ext})}
such that \code{\var{root} + \var{ext} == \var{p}},
-the last component of \var{root} contains no periods,
-and \var{ext} is empty or begins with a period.
+and \var{ext} is empty or begins with a period and contains
+at most one period.
\end{funcdesc}
\begin{funcdesc}{walk}{p\, visit\, arg}